From charles@fc.hp.com Sat Mar 11 21:56:05 EST 1995
Article: 1611 of sci.engr.lighting
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From: charles@fc.hp.com (Charles Moore)
Newsgroups: sci.engr.lighting
Subject: Re: Electrons
Date: 15 Feb 1995 19:59:12 GMT
Organization: Hewlett-Packard Fort Collins Site
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Amcan Inc. (amcan@pipeline.com) wrote:
:  
: A friend of mine and I both work as lighting technicians in the movie
: business. In our quest to better understand electricity we have formulated
: a question. 
:  
: To illustrate this question we give you two situations: 
:  
: Situation #1.   A 12 volt battery supplies a 20 watt bulb (rated for 12
: volts) with 1.66 amps. 
:  
: Situation #2.  A 6 volt battery supplies a 20 watt bulb (rated for 6 volts)
: with 3.33 amps. 
:  
: In the first situation the number of electrons passing throught the wire
: is half that in the second situation. What is different about the electrons
: in the first situation such that less of them can do more work? 
:  

As electrons travel through the filament of a bulb they will scatter off of
(collide with) lattice imperfections and phonons, giving up energy to the 
filament each time.  This is how the electrons heat the filament.

The filament in the first situation will be either thinner, or longer than
in the second situation.  If the filament is thinner, the electrons must go
faster to carry a given current, and will give up more energy each time 
they scatter.  If the filament is longer, the electron will have scatter
more times and hence give up more energy.  Most likely, the filament in the
second case is enough thicker so that the electrons travel at the same speed
in each situation but the filament in situation 1 will be twice as long as in
situation 2, so half the current will do the same heating.

                
: -- 
: Piotr Jagninski 
: (212) 260-3191 
: amcan@pipeline.com 


              charles moore hpltbr.fc.hp.com


From nick@vu-vlsi.ee.vill.edu Sat Mar 11 21:57:26 EST 1995
Article: 1608 of sci.engr.lighting
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From: nick@vu-vlsi.ee.vill.edu (Nick Pine)
Newsgroups: sci.engr.lighting
Subject: Re: Electrons
Date: 18 Feb 1995 04:35:10 -0500
Organization: Villanova University
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NNTP-Posting-Host: vu-vlsi.ee.vill.edu

Philip Decker, 5313 <pdecker@lds.loral.com> wrote:

>Voltage is Current times Resistance (V = I x R).  Ohm's Law.

This also works for heating, where delta T = U x R, for heatflow through an
insulated surface, eg the wall of a house. In this case, it is known as
Newton's Law of Cooling. delta T is the temperature difference between one
side of the surface and the other in degrees F, U is in Btu/hour, and R is the
thermal resistance of the surface, ie its R-value/surface area in square feet. 

Nick



From tjk@bambi.eeap.cwru.edu Sat Mar 11 21:58:32 EST 1995
Article: 1607 of sci.engr.lighting
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From: tjk@bambi.eeap.cwru.edu (Timothy Kordas)
Newsgroups: sci.engr.semiconductors,sci.engr.lighting
Subject: Re: LED TVs
Followup-To: sci.engr.semiconductors,sci.engr.lighting
Date: 17 Feb 1995 20:01:39 GMT
Organization: Ambivalence, Inc.
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Jonathan E. Hardis (hardis@garnet.nist.gov) wrote:

> 1)  The laboratory-prototype blue LEDs generally have a short lifetimes
>     or operate only at cryogenic temperatures.  More development is
>     required.  Would you like it when individual pixels start failing
>     on your TV screen?

as several other people have mentioned, Cree research does manufacture
Blue LEDs which are not laboratory prototypes...they are quite inefficient,
but certainly work fine at room temperature...GaN LEDs are much more efficient,
but that technology isn't nearly as mature as the SiC that Cree uses (??).


-Tim
--
Timothy J. Kordas                   
http://bambi.eeap.cwru.edu/tjk/tim.html


From orlites@aol.com Sat Mar 11 22:00:46 EST 1995
Article: 1673 of sci.engr.lighting
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From: orlites@aol.com (ORLITES)
Newsgroups: sci.engr.lighting
Subject: Re: software controlled dimmers
Date: 6 Mar 1995 00:54:05 -0500
Organization: America Online, Inc. (1-800-827-6364)
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There are a few applications that can control dimmers via a PC. (If I
understand you correctly) This of course still requires a conventional
controller to stand in line and act as an interface for cue storage. 

As for the dimmable flourescent, try Lighting and Electronics new fixture.
Comes double and single tube and has been very impressive in many
applications and demos. L&E is in upstate N.Y. or if you need help with
purchasing feel free to give me a call @ :

(407) 246-7071
Rob Bourgeois
Orlando, FL.



From zarnott@aol.com Sat Mar 11 22:01:43 EST 1995
Article: 1690 of sci.engr.lighting
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From: zarnott@aol.com (ZARNOTT)
Newsgroups: sci.engr.lighting
Subject: Re: software controlled dimmers
Date: 8 Mar 1995 22:13:24 -0500
Organization: America Online, Inc. (1-800-827-6364)
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I guess if you have a controller that converts digital to 0 -10VDC you can
drive the Advance MKVII, and Motorola Helios Ballasts.  

Lutron's new ballast is called Eco-10 because it is a 10% dimming ballast
as compared to the Hi-lume 1% model.  They use a phase control 3-wire
system that would need to be run through an inexpensive module they call a
"BCI" to be controlled via a 0-10VDC signal.  If you call them, they may
have another way they dim via computer.  Talk to Dave Luchaco.  He's one
of the best dimming engineers on the planet.

BTW - They have been shipping the Eco-10 for a couple months now.

Mike Z


From stuartl@netcom.com Sat Mar 11 22:02:31 EST 1995
Article: 1675 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!gt-news!news
From: stuart.lewis@arch.gatech.edu (Stuart Lewis)
Newsgroups: sci.engr.lighting,sci.energy
Subject: Ann: Building Sci. Resource Page
Date: 6 Mar 1995 16:21:53 GMT
Organization: GT
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Xref: bigblue.oit.unc.edu sci.engr.lighting:1675 sci.energy:29317

I have put together a WWW page with a number of links and pointers
to building science information, specifically relating to energy 
and illumination.

It can be found at:
<a href="file://ftp.netcom.com/pub/st/stuartl/resources.html"></a>

Comments and suggestions are welcomed.
Enjoy!

Stuart Lewis
<stuartl@netcom.com>


From jc_hail@pnl.gov Sat Mar 11 22:02:41 EST 1995
Article: 1691 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!taco.cc.ncsu.edu!gatech!swrinde!elroy.jpl.nasa.gov!lll-winken.llnl.gov!osi-east2.es.net!oracle.pnl.gov!bbs.pnl.gov!jc_hail.pnl.gov!user
From: jc_hail@pnl.gov (John Hail)
Newsgroups: sci.engr.lighting
Subject: Re: Ann: Building Sci. Resource Page
Followup-To: sci.engr.lighting,sci.energy
Date: 7 Mar 1995 20:43:18 GMT
Organization: Me, Myself, and I
Lines: 26
Distribution: world
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In article <3jfcr1$8fq@mordred.gatech.edu>, stuart.lewis@arch.gatech.edu
(Stuart Lewis) wrote:
> 
> I have put together a WWW page with a number of links and pointers
> to building science information, specifically relating to energy 
> and illumination.
> 
> It can be found at:
> <a href="file://ftp.netcom.com/pub/st/stuartl/resources.html"></a>
> 
> Comments and suggestions are welcomed.
> Enjoy!
> 
> Stuart Lewis
> <stuartl@netcom.com>

I tried to connect in Mosaic to this:

hppt://ftp.netcom.com/pub/st/stuartl/resources.html

and Mosaic looked and looked but I canceled the request.  Should I try it
again or something else?

Thanks

John


From stuartl@netcom.com Sat Mar 11 22:02:47 EST 1995
Article: 1694 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!taco.cc.ncsu.edu!gatech!gt-news!news
From: stuart.lewis@arch.gatech.edu (Stuart Lewis)
Newsgroups: sci.engr.lighting
Subject: Re: Ann: Building Sci. Resource Page
Date: 7 Mar 1995 23:19:37 GMT
Organization: Georgia Institute of Technology
Lines: 22
Message-ID: <3jipm9$hdo@mordred.gatech.edu>
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X-Newsreader: WinVN 0.92.5

In article <jc_hail-070395124247@jc_hail.pnl.gov>, jc_hail@pnl.gov (John Hail) says:
>
>
:
>> It can be found at:
>> <a href="file://ftp.netcom.com/pub/st/stuartl/resources.html"></a>
:
>I tried to connect in Mosaic to this:
>
>hppt://ftp.netcom.com/pub/st/stuartl/resources.html
>
>and Mosaic looked and looked but I canceled the request.  Should I try it
>again or something else?
>

The page is actually on an ftp server rather than a www server, so if 
you specify 'http:' instead of 'file:' in your URL the document will not 
be retrieved properly.  

(It will still look and act just like any other html document, however.)

-Stuart


From macrakis@osf.org Sat Mar 11 22:03:09 EST 1995
Article: 1686 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!bloom-beacon.mit.edu!paperboy.osf.org!usenet
From: macrakis@osf.org (Stavros Macrakis)
Newsgroups: sci.engr.lighting
Subject: Re: Ann: Building Sci. Resource Page
Date: 08 Mar 1995 17:07:06 GMT
Organization: OSF Research Institute
Lines: 32
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References: <3jfcr1$8fq@mordred.gatech.edu> <jc_hail-070395124247@jc_hail.pnl.gov>
	<3jipm9$hdo@mordred.gatech.edu>
NNTP-Posting-Host: lakatos.osf.org
In-reply-to: stuart.lewis@arch.gatech.edu's message of 7 Mar 1995 23:19:37 GMT

In articles <3jfcr1$8fq@mordred.gatech.edu> and <3jipm9$hdo@
mordred.gatech.edu>, stuart.lewis@arch.gatech.edu (Stuart Lewis)
writes:

   ...a WWW page [on] building science, ...specifically... energy
   and illumination....at:

   <a href="file://ftp.netcom.com/pub/st/stuartl/resources.html"></a>...

   The page is actually on an ftp server rather than a www server, so
   if you specify 'http:' instead of 'file:' in your URL the document
   will not be retrieved properly.

Actually, "file:" is not the correct specification, and <a...> is not
the correct citation form for URL's.  The correct form is:

	ftp://ftp.netcom.com/pub/st/stuartl/resources.html

According to the URL spec, "file:" "does not designate a resource that
is universally accessible over the Internet".  As for <a...>, that is
the anchor used to reference the document within HTML, but the
location of the document itself is as above.  Note also that serving
the document via ftp rather than http means that the client (browser)
needs to "guess" how to display it.  Sure, it starts with <html>, so
that seems clear, but using HTTP makes things clearer.  So I'd suggest
you move to a WWW server when you can.

This all sounds nitpicky, doesn't it?  But it does make a difference
to the end user.

	-s



From macrakis@osf.org Sat Mar 11 22:04:03 EST 1995
Article: 1686 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!bloom-beacon.mit.edu!paperboy.osf.org!usenet
From: macrakis@osf.org (Stavros Macrakis)
Newsgroups: sci.engr.lighting
Subject: Re: Ann: Building Sci. Resource Page
Date: 08 Mar 1995 17:07:06 GMT
Organization: OSF Research Institute
Lines: 32
Message-ID: <MACRAKIS.95Mar8120706@lakatos.osf.org>
References: <3jfcr1$8fq@mordred.gatech.edu> <jc_hail-070395124247@jc_hail.pnl.gov>
	<3jipm9$hdo@mordred.gatech.edu>
NNTP-Posting-Host: lakatos.osf.org
In-reply-to: stuart.lewis@arch.gatech.edu's message of 7 Mar 1995 23:19:37 GMT

In articles <3jfcr1$8fq@mordred.gatech.edu> and <3jipm9$hdo@
mordred.gatech.edu>, stuart.lewis@arch.gatech.edu (Stuart Lewis)
writes:

   ...a WWW page [on] building science, ...specifically... energy
   and illumination....at:

   <a href="file://ftp.netcom.com/pub/st/stuartl/resources.html"></a>...

   The page is actually on an ftp server rather than a www server, so
   if you specify 'http:' instead of 'file:' in your URL the document
   will not be retrieved properly.

Actually, "file:" is not the correct specification, and <a...> is not
the correct citation form for URL's.  The correct form is:

	ftp://ftp.netcom.com/pub/st/stuartl/resources.html

According to the URL spec, "file:" "does not designate a resource that
is universally accessible over the Internet".  As for <a...>, that is
the anchor used to reference the document within HTML, but the
location of the document itself is as above.  Note also that serving
the document via ftp rather than http means that the client (browser)
needs to "guess" how to display it.  Sure, it starts with <html>, so
that seems clear, but using HTTP makes things clearer.  So I'd suggest
you move to a WWW server when you can.

This all sounds nitpicky, doesn't it?  But it does make a difference
to the end user.

	-s



From muscrost@quad.synapse.net Sat Mar 11 22:04:13 EST 1995
Article: 1687 of sci.engr.lighting
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From: muscrost@quad.synapse.net (This is me!)
Newsgroups: sci.engr.lighting
Subject: Re: Ann: Building Sci. Resource Page
Date: Wed, 8 Mar 1995 12:53:38 LOCAL
Organization: Me! Organized?,  I don't think so!
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Distribution: world
Message-ID: <muscrost.4.00454355@quad.synapse.net>
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X-Newsreader: Trumpet for Windows [Version 1.0 Rev B final beta #4]



>hppt://ftp.netcom.com/pub/st/stuartl/resources.html

>and Mosaic looked and looked but I canceled the request.  Should I try it
>again or something else?

>Thanks

>John


FYI: to connect to a ftp site use the following in Mosaic (or, even better 
Netscape)
ftp://netcom.com/pub/st/stuartl/resources.html

The ftp:// is the type of site you are going to, and the rest is the URL 
 or "real" address.

Have fun.


From Lighting@garnet.nist.gov Sat Mar 11 22:04:30 EST 1995
Article: 1676 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!udel!news.mathworks.com!newshost.marcam.com!uunet!dove.nist.gov!gateway
From: KenBeyer@aol.com
Newsgroups: sci.engr.lighting
Subject: W3 Links
Date: 6 Mar 1995 12:12:53 -0500
Organization: NIST
Lines: 15
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <950305212343_40296144@aol.com>
Reply-To: Lighting@garnet.nist.gov
NNTP-Posting-Host: dove.nist.gov

For all of you Web crawlers, the Kansas State University student chapter of
IES is developing a home page on the Net.  Currently most of the information
on the page is about our local chapter's projects and activities.  However,
we would like to expand the page to include links to lighting resources all
over the world.

If you know of any such resources that we could link to, please let me know
and I will include them on our page.  To browse our page, using Mosaic, point
your URL to 'http://www.ksu.edu/~kenbeyer/ies.html'.

Thanks for your help,

Ken Beyer
President
KSU IES


From Lighting@garnet.nist.gov Sat Mar 11 22:04:40 EST 1995
Article: 1680 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!zombie.ncsc.mil!news.mathworks.com!uunet!dove.nist.gov!gateway
From: crawford@noao.edu (Dave Crawford)
Newsgroups: sci.engr.lighting
Subject: Re: W3 Links
Date: 6 Mar 1995 13:17:48 -0500
Organization: NIST
Lines: 45
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <9503061720.AA26156@orion.tuc.noao.edu>
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Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"

>For all of you Web crawlers, the Kansas State University student chapter of
>IES is developing a home page on the Net.  Currently most of the information
>on the page is about our local chapter's projects and activities.  However,
>we would like to expand the page to include links to lighting resources all
>over the world.
>
>If you know of any such resources that we could link to, please let me know
>and I will include them on our page.  To browse our page, using Mosaic, point
>your URL to 'http://www.ksu.edu/~kenbeyer/ies.html'.
>
>Thanks for your help,
>
>Ken Beyer
>President
>KSU IES
>


Hi Ken,

Nice to see notice of your page.  I will have a look and email any comments
later.

The INternational Dark-Sky Association, whose goals are to promote the value
of dark skies and of quality outdoor nighttime lighting, has a page you
might want to reference.  Its temporay home is :
http://cfa-www.harvard.edu/cfa/ps.nelpag/ida/IDA1.html

NELPAG has a page too, with a link from the ida page.

In time, the Web should be a most valuable resource for anyone interested in
lighting.  Let's hope that the IES as a whole (and the CIE) gets a presence
too in the not too distant future.

I'll get back after I have seen the pages.

Regards,

Dave Crawford
Dr. David L. Crawford
NOAO, Box 26732, Tucson AZ 85726 USA
Email:  crawford@noao.edu
Phone:  602-325-9346        Fax:  602-325-9360




From Lighting@garnet.nist.gov Sat Mar 11 22:04:53 EST 1995
Article: 1683 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!uunet!in1.uu.net!dove.nist.gov!gateway
From: JBolduan@ix.netcom.com (John Bolduan)
Newsgroups: sci.engr.lighting
Subject: Re: W3 Links
Date: 6 Mar 1995 14:19:59 -0500
Organization: NIST
Lines: 39
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <199503061844.KAA06663@ix3.ix.netcom.com>
Reply-To: Lighting@garnet.nist.gov
NNTP-Posting-Host: dove.nist.gov

You wrote:

>
>For all of you Web crawlers, the Kansas State University student
chapter of
>IES is developing a home page on the Net.  Currently most of the
information
>on the page is about our local chapter's projects and activities.
However,
>we would like to expand the page to include links to lighting resources
all
>over the world.
>
>If you know of any such resources that we could link to, please let me
know
>and I will include them on our page.  To browse our page, using Mosaic,
point
>your URL to 'http://www.ksu.edu/~kenbeyer/ies.html'.
>
>Thanks for your help,
>
>Ken Beyer
>President
>KSU IES
>
>
Mr. Beyer,

Please include The Lighting Resource as a URL link. Take a look if you
like. I will put yours as a link in our page(s).

http://www.webcom.com/~lightsrc/

Email me with any questions.

Best regards,
John Bolduan
JBolduan@ix.netcom.com



From Lighting@garnet.nist.gov Sat Mar 11 22:05:21 EST 1995
Article: 1681 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news.sprintlink.net!uunet!in1.uu.net!dove.nist.gov!gateway
From: robpen@wseo.wa.gov (Rob Penney)
Newsgroups: sci.engr.lighting
Subject: Re: W3 Links
Date: 6 Mar 1995 18:42:27 -0500
Organization: Washington State Energy Office
Lines: 32
Sender: daemon@dove.nist.gov
Approved: news
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Content-Type: text/plain; charset="us-ascii"


I think
 ----------
John Bolduan wrote:
****************************************************************************
********
Please include The Lighting Resource as a URL link. Take a look if you
like. I will put yours as a link in our page(s).

http://www.webcom.com/~lightsrc/

Email me with any questions.

Best regards,
John Bolduan
JBolduan@ix.netcom.com
****************************************************************************
*********

I think that an announcement of John's new Web site deserves more fanfare
than that.  It covers all aspects of lighting, with a focus on real world
solutions and design recommendations.  It features reprinted articles from
lighting journals (this months is the excellent article on sulfur lighting
from IAEEL), energy-efficient lighting upgrade of the month, new products,
industry news, calendar of events, and gateways to over a dozen
lighting-related information resources on the Internet--the best I've seen
yet.  It's a young site, just getting started, but very sharp, well
organized, and headed in a great direction.  Give it a try.

Rob Penney
robpen@wseo.wa.gov



From Lighting@garnet.nist.gov Sat Mar 11 22:05:39 EST 1995
Article: 1682 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!udel!news.mathworks.com!newshost.marcam.com!uunet!in1.uu.net!dove.nist.gov!gateway
From: JBolduan@ix.netcom.com (John Bolduan)
Newsgroups: sci.engr.lighting
Subject: Re: W3 Links
Date: 7 Mar 1995 08:14:26 -0500
Organization: NIST
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You wrote:

>
>>For all of you Web crawlers, the Kansas State University student
chapter of
>>IES is developing a home page on the Net.  Currently most of the
information
>>on the page is about our local chapter's projects and activities.
However,
>>we would like to expand the page to include links to lighting
resources all
>>over the world.
>>
>>If you know of any such resources that we could link to, please let me
know
>>and I will include them on our page.  To browse our page, using
Mosaic, point
>>your URL to 'http://www.ksu.edu/~kenbeyer/ies.html'.
>>
>>Thanks for your help,
>>
>>Ken Beyer
>>President
>>KSU IES
>>
>
>
>Hi Ken,
>
>Nice to see notice of your page.  I will have a look and email any
comments
>later.
>
>The INternational Dark-Sky Association, whose goals are to promote the
value
>of dark skies and of quality outdoor nighttime lighting, has a page you
>might want to reference.  Its temporay home is :
>http://cfa-www.harvard.edu/cfa/ps.nelpag/ida/IDA1.html
>
>NELPAG has a page too, with a link from the ida page.
>
>In time, the Web should be a most valuable resource for anyone
interested in
>lighting.  Let's hope that the IES as a whole (and the CIE) gets a
presence
>too in the not too distant future.
>
>I'll get back after I have seen the pages.
>
>Regards,
>
>Dave Crawford
>Dr. David L. Crawford
>NOAO, Box 26732, Tucson AZ 85726 USA
>Email:  crawford@noao.edu
>Phone:  602-325-9346        Fax:  602-325-9360
>
>Dave,

I've included your URL to our related lighting and energy links page at
The Lighting Resource at http://www.webcom.com/~lightsrc/

Hope that is ok! I feel it will be helpful and insightful to that aspect
of lighting.

Best regards,
John Bolduan
>
>





From Lighting@garnet.nist.gov Sat Mar 11 22:05:47 EST 1995
Article: 1685 of sci.engr.lighting
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From: X0401DAA@AWIUNI11.EDVZ.UNIVIE.AC.AT (CIE, C.Hermann)
Newsgroups: sci.engr.lighting
Subject: WWW
Date: 8 Mar 1995 08:03:25 -0500
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Content-Transfer-Encoding: 7BIT



In response to the message of Ken Beyer to the USNC Lighting Mailing List, re
"W3 Links", we can inform you that CIE information is available on WWW under the
URL:

http://www.hike.te.chiba-u.ac.jp/ikeda/CIE/home.html

(You will find here general information on CIE, our publication list and the
press releases of all our publications.)

Sincerely yours,
Christine Hermann
Office Manager
CIE Central Bureau
x0401daa@vm.univie.ac.at


From stuartl@netcom.com Sat Mar 11 22:05:54 EST 1995
Article: 1694 of sci.engr.lighting
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From: stuart.lewis@arch.gatech.edu (Stuart Lewis)
Newsgroups: sci.engr.lighting
Subject: Re: Ann: Building Sci. Resource Page
Date: 7 Mar 1995 23:19:37 GMT
Organization: Georgia Institute of Technology
Lines: 22
Message-ID: <3jipm9$hdo@mordred.gatech.edu>
References: <3jfcr1$8fq@mordred.gatech.edu> <jc_hail-070395124247@jc_hail.pnl.gov>
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In article <jc_hail-070395124247@jc_hail.pnl.gov>, jc_hail@pnl.gov (John Hail) says:
>
>
:
>> It can be found at:
>> <a href="file://ftp.netcom.com/pub/st/stuartl/resources.html"></a>
:
>I tried to connect in Mosaic to this:
>
>hppt://ftp.netcom.com/pub/st/stuartl/resources.html
>
>and Mosaic looked and looked but I canceled the request.  Should I try it
>again or something else?
>

The page is actually on an ftp server rather than a www server, so if 
you specify 'http:' instead of 'file:' in your URL the document will not 
be retrieved properly.  

(It will still look and act just like any other html document, however.)

-Stuart


From tjk@bambi.eeap.cwru.edu Sat Mar 11 22:10:21 EST 1995
Article: 1607 of sci.engr.lighting
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From: tjk@bambi.eeap.cwru.edu (Timothy Kordas)
Newsgroups: sci.engr.semiconductors,sci.engr.lighting
Subject: Re: LED TVs
Followup-To: sci.engr.semiconductors,sci.engr.lighting
Date: 17 Feb 1995 20:01:39 GMT
Organization: Ambivalence, Inc.
Lines: 17
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Xref: bigblue.oit.unc.edu sci.engr.semiconductors:2268 sci.engr.lighting:1607

Jonathan E. Hardis (hardis@garnet.nist.gov) wrote:

> 1)  The laboratory-prototype blue LEDs generally have a short lifetimes
>     or operate only at cryogenic temperatures.  More development is
>     required.  Would you like it when individual pixels start failing
>     on your TV screen?

as several other people have mentioned, Cree research does manufacture
Blue LEDs which are not laboratory prototypes...they are quite inefficient,
but certainly work fine at room temperature...GaN LEDs are much more efficient,
but that technology isn't nearly as mature as the SiC that Cree uses (??).


-Tim
--
Timothy J. Kordas                   
http://bambi.eeap.cwru.edu/tjk/tim.html


From nick@vu-vlsi.ee.vill.edu Sat Mar 11 22:10:22 EST 1995
Article: 1608 of sci.engr.lighting
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From: nick@vu-vlsi.ee.vill.edu (Nick Pine)
Newsgroups: sci.engr.lighting
Subject: Re: Electrons
Date: 18 Feb 1995 04:35:10 -0500
Organization: Villanova University
Lines: 12
Message-ID: <3i4f0e$d1j@vu-vlsi.ee.vill.edu>
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NNTP-Posting-Host: vu-vlsi.ee.vill.edu

Philip Decker, 5313 <pdecker@lds.loral.com> wrote:

>Voltage is Current times Resistance (V = I x R).  Ohm's Law.

This also works for heating, where delta T = U x R, for heatflow through an
insulated surface, eg the wall of a house. In this case, it is known as
Newton's Law of Cooling. delta T is the temperature difference between one
side of the surface and the other in degrees F, U is in Btu/hour, and R is the
thermal resistance of the surface, ie its R-value/surface area in square feet. 

Nick



From hamilton@stsci.edu Sat Mar 11 22:10:24 EST 1995
Article: 1609 of sci.engr.lighting
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From: hamilton@stsci.edu (suffering from stellar anemia...)
Newsgroups: sci.engr.lighting
Subject: Anyone know a URL for the CIE or IESNA?
Date: 17 Feb 95 22:13:53 EST
Organization: Space Telescope Science Institute, Baltimore, MD 21218
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  Would anyone out there have a URL for the Commission Internationale de 
l'Eclairage (CIE) or the Illuminating Engineering Society of North America 
(IESNA)?

Thanks, Forrest


From charles@fc.hp.com Sat Mar 11 22:10:26 EST 1995
Article: 1611 of sci.engr.lighting
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From: charles@fc.hp.com (Charles Moore)
Newsgroups: sci.engr.lighting
Subject: Re: Electrons
Date: 15 Feb 1995 19:59:12 GMT
Organization: Hewlett-Packard Fort Collins Site
Lines: 40
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X-Newsreader: TIN [version 1.2 PL1.4]

Amcan Inc. (amcan@pipeline.com) wrote:
:  
: A friend of mine and I both work as lighting technicians in the movie
: business. In our quest to better understand electricity we have formulated
: a question. 
:  
: To illustrate this question we give you two situations: 
:  
: Situation #1.   A 12 volt battery supplies a 20 watt bulb (rated for 12
: volts) with 1.66 amps. 
:  
: Situation #2.  A 6 volt battery supplies a 20 watt bulb (rated for 6 volts)
: with 3.33 amps. 
:  
: In the first situation the number of electrons passing throught the wire
: is half that in the second situation. What is different about the electrons
: in the first situation such that less of them can do more work? 
:  

As electrons travel through the filament of a bulb they will scatter off of
(collide with) lattice imperfections and phonons, giving up energy to the 
filament each time.  This is how the electrons heat the filament.

The filament in the first situation will be either thinner, or longer than
in the second situation.  If the filament is thinner, the electrons must go
faster to carry a given current, and will give up more energy each time 
they scatter.  If the filament is longer, the electron will have scatter
more times and hence give up more energy.  Most likely, the filament in the
second case is enough thicker so that the electrons travel at the same speed
in each situation but the filament in situation 1 will be twice as long as in
situation 2, so half the current will do the same heating.

                
: -- 
: Piotr Jagninski 
: (212) 260-3191 
: amcan@pipeline.com 


              charles moore hpltbr.fc.hp.com


From Lighting@garnet.nist.gov Sat Mar 11 22:10:27 EST 1995
Article: 1613 of sci.engr.lighting
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From: prouser@newschool.edu (Robert Prouser)
Newsgroups: sci.engr.lighting
Subject: grad school advice needed -Reply
Date: 18 Feb 1995 19:48:47 -0500
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>>>>>>>>>>>>>>>
I teach theatrical lighting at UCSC (Santa Cruz, CA), and hope that
some of you may advise me.  I have a few students that want to go on
into architectural lighting.  I don't know the schools and programs
in the architectural side of lighting, nor do I know what their
expectations of students are.

Could some of you pass on names of likely schools in this area, and
what level of math is expected from entering graduate students? Also,
is an apprenticeship to be encouraged before enrolling in grad
school?

Please respond to me directly, as this isn't really germane to this
list.
BTW, did anyone do a summary report on the recent lighting education
conference that was mentioned in this list?

Thanks much! - John

\./ John G. Rathman 3 \./ jgr3@cats.ucsc.edu \./ UCSC: 408-459-4320
\./
/'\ Lighting Designer /'\   USA829   IESNA   /'\ HOME: 415-854-4560
/'\
<<<<<<<<<<<<<<
The Parsons School of Design in New York City offers a two year (if
taken full-time) Masters of Fine Arts in Architectural Lighting
Design.  It is a heavily design-oriented program with four semesters
of six-credit lighting design studios, taught by members of New York
City's lighting design community.  This studio work is supplemented
with substantial supporting coursework in human factors, illuminating
engineering, history of lighting, luminaire design, daylighting, and
other related topics.

Contact the Office of Admissions/Parsons School of Design/66 Fifth
Avenue/ New York, New York 10011 Tel. 2122-229-8910, or 800-252-0852,
FAX 212-229-8975, and ask for the "Graduate Studies Catalog".




From rem@loki.UCSC.EDU Sat Mar 11 22:10:29 EST 1995
Article: 1614 of sci.engr.lighting
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From: rem@loki.UCSC.EDU (Remington Stone)
Newsgroups: sci.engr.lighting
Subject: near UV continuum source needed
Date: 19 Feb 1995 05:29:43 GMT
Organization: UCO/Lick Observatory, Santa Cruz
Lines: 23
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NNTP-Posting-Host: loki.ucsc.edu

Hello, lighting wizards,

I'm looking for a smooth continuum lamp with a good flux in the
3000-3200 angstrom range.  The source will be used at an astronomical
telescope to calibrate our detectors.  Spectral smoothness is an
absolute requirement, but everything else is pretty flexible; 110v
is preferred, but anything up to that is ok, a 2"x2" bulb is fine,
but so is a 6"x6" one or anything remotely like that, and while
lower wattage is preferred to minimize unnecessary heat, I suppose
even a few hundred watts would be worth a try.  

So far, the best thing I've found is the 12v lamps with a dichroic
blue reflector -- that has the nice advantage of relatively
decreasing the red flux -- but the ones I've found so far are still
not blue enough.

Any recommendations?  A source and price would be greatly appreciated.

Thanks!

Rem

not blue enough.  Something with peak emission at 


From IFF161@DJUKFA11.BITNET Sat Mar 11 22:10:31 EST 1995
Article: 1615 of sci.engr.lighting
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From: IFF161@DJUKFA11.BITNET (Bob Mueller)
Newsgroups: sci.engr.lighting
Subject: LED TV s: The weak blue contribution!
Message-ID: <95049.141247IFF161@DJUKFA11.BITNET>
Date: 18 Feb 95 13:12:47 GMT
Organization: Forschungszentrum Juelich
Lines: 22

Siemens has sold blue LED s for quite a few years.  These are based on SiC as
the semiconductor and had a major problem- extremely high price.  There seems
to have been no competition until the last few years (except for incandescent
lamps with blue envelopes, in LED sized packages).  Now that  others have
entered the market place the prices are an order of magnitude lower. Also,
brightness is getting better.  Thus, maybe the LED TV will be possible in the
not-too-distant future, though there remains the technical barrier of getting
arrays of these things.  Unlike many devices we have vastly different
substrates here.  Your typical IC is all silicon, or maybe all GaAs, with some
variation of low concentrations of foreign dopants from place to place.  The
different colors of LED are built around quite different materials requiring
quite different processing.  Either a very clever scheme is needed to lay down
hundreds of thousands of these very different spots of material using something
like lithographic techniques or else we'll need machines sticking all those
little chips on a substrate, one by one.  Will any company bother? Why? (A
color CCD contains nearly 500,000 sensing elements and the TV would need a
similar number to deliver the resolution given by the pick-up chip.)  It might
make sense for a military job, but nobody else can pay the bill.


  Sincerely,
  Bob


From Lighting@garnet.nist.gov Sat Mar 11 22:10:33 EST 1995
Article: 1616 of sci.engr.lighting
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From: EHCaylor@aol.com
Newsgroups: sci.engr.lighting
Subject: Rendering Graphics Files
Date: 19 Feb 1995 11:56:22 -0500
Organization: NIST
Lines: 15
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I was wondering if any of the readers of this forum had output from rendering
programs such as Lightscape, Radiance, 3D Studio, Genesys, Envision/Luxicon,
etc. in the form of .GIF, .TIF, .BMP, .EPS, etc. files.  We are having an
engineering expo for high school students and wanted to run these files on a
program such as MS Powerpoint to cycle through (slide show) the various
graphic files.  We wanted to show the students the different kinds of
renderings that are possible/prevalent in the Lighting Design industry.

Erik H. Caylor
University of Kansas
IES Student Chapter President

EHCaylor@aol.com




From maf@dl.ac.uk Sat Mar 11 22:10:35 EST 1995
Article: 1617 of sci.engr.lighting
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From: maf@dl.ac.uk (M.A.Ferenczi)
Newsgroups: sci.engr.lighting
Subject: Re: near UV continuum source needed
Date: 20 Feb 1995 01:18:32 GMT
Organization: SERC Daresbury Lab, Warrington, U.K.
Lines: 21
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NNTP-Posting-Host: ncds21.dl.ac.uk
X-Newsreader: TIN [version 1.2 PL2]

Remington Stone (rem@loki.UCSC.EDU) wrote:
: Hello, lighting wizards,

: I'm looking for a smooth continuum lamp with a good flux in the
: 3000-3200 angstrom range.  The source will be used at an astronomical
: telescope to calibrate our detectors.  Spectral smoothness is an
: absolute requirement, but everything else is pretty flexible; 110v
: is preferred, but anything up to that is ok, a 2"x2" bulb is fine,
: but so is a 6"x6" one or anything remotely like that, and while
: lower wattage is preferred to minimize unnecessary heat, I suppose
: even a few hundred watts would be worth a try.  

Xenon lamps provide flat spectrum with output down to 240 nm. They
require high voltage supplies and are expensive. Deuterium lamps
are also good (they are used in spectro
photometer
Cheers
Mike

Try Oriel



From Lighting@garnet.nist.gov Sat Mar 11 22:10:37 EST 1995
Article: 1618 of sci.engr.lighting
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From: ilumenator@aol.com
Newsgroups: sci.engr.lighting
Subject: Re: grad school advice needed
Date: 20 Feb 1995 03:34:41 -0500
Organization: NIST
Lines: 7
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Approved: news
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Reply-To: Lighting@garnet.nist.gov
NNTP-Posting-Host: dove.nist.gov

John,
If you don't mind calling me, I would be glad to supply you with a list of
educational facilities that offer lighting courses for architectural
students.
Tom Tolen, IES
Eley Associates
(415) 957-1977


From Lighting@garnet.nist.gov Sat Mar 11 22:10:40 EST 1995
Article: 1619 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news.sprintlink.net!uunet!dove.nist.gov!gateway
From: JBolduan@ix.netcom.com (John Bolduan)
Newsgroups: sci.engr.lighting
Subject: Re: Rendering Graphics Files
Date: 19 Feb 1995 23:09:23 -0500
Organization: NIST
Lines: 33
Sender: daemon@dove.nist.gov
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NNTP-Posting-Host: dove.nist.gov

You wrote:

>
>I was wondering if any of the readers of this forum had output from
rendering
>programs such as Lightscape, Radiance, 3D Studio, Genesys,
Envision/Luxicon,
>etc. in the form of .GIF, .TIF, .BMP, .EPS, etc. files.  We are having
an
>engineering expo for high school students and wanted to run these files
on a
>program such as MS Powerpoint to cycle through (slide show) the various
>graphic files.  We wanted to show the students the different kinds of
>renderings that are possible/prevalent in the Lighting Design industry.
>
>Erik H. Caylor
>University of Kansas
>IES Student Chapter President
>
>EHCaylor@aol.com
>
>I have that capability with lumen micro and I've got a good shareware
veiwer for a slide show. Power point should also work fine. Let me know
if you would like some example files and specify format.

John Bolduan
JBolduan@ix.netcom.com

>
>





From ilumenator@aol.com Sat Mar 11 22:10:43 EST 1995
Article: 1620 of sci.engr.lighting
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From: ilumenator@aol.com (Ilumenator)
Newsgroups: sci.engr.lighting
Subject: Re: How does fluor. ballast work?
Date: 20 Feb 1995 02:58:21 -0500
Organization: America Online, Inc. (1-800-827-6364)
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NNTP-Posting-Host: newsbf02.mail.aol.com

Recommend that you get your hands on either the "Advanced Lighting
Guidelines," published by the US Department of Energy, Electric Power
Research Institute and California Energy Commission, or on RPI's
Specification Sheet for Electronic Ballasts.  


From Lighting@garnet.nist.gov Sat Mar 11 22:10:44 EST 1995
Article: 1621 of sci.engr.lighting
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From: ilumenator@aol.com
Newsgroups: sci.engr.lighting
Subject: Re: Museum lighting
Date: 20 Feb 1995 03:28:29 -0500
Organization: NIST
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NNTP-Posting-Host: dove.nist.gov

As a lighting designer with more than ten years experience in lighting
galleries, museums and other similar applications, I would be glad to
provide you with advice regarding your museum lighting FREE of charge
(other than the phone call).
Tom Tolen, IES
Eley Associates
(415) 957-1977


From blythe@dfw.net Sat Mar 11 22:10:46 EST 1995
Article: 1666 of sci.engr.lighting
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From: blythe@dfw.net (Mark Blythe)
Newsgroups: sci.engr.lighting
Subject: ECO Bulbs
Date: 3 Mar 1995 02:21:38 GMT
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                                   ECO Bulbs
                          Energy Efficient Light Bulbs

                              Reduce Energy Bills
                           Help Save the Environment


What is an ECO Bulb?  An ECO Bulb is an energy-efficient compact flourescent
light bulb.  Using only 18 watts of energy, this bulb produces as much light
as a 60-75 watt incandescent bulb.  In addition to these energy savings, ECO
Bulbs also boast an incredibly long life - approximately 10,000 hours.  Thus,
one ECO Bulb lasts as long as THIRTEEN standard 750 hour bulbs. That's twelve
more bulbs you don't have to buy, and twelve more bulbs that won't end up in
our landfills.  Each ECO Bulb will save you $60 over its lifetime, based on
an energy cost of 10 cents/KWH.

Can changing a light bulb really make an impact on the environment?  It
certainly can.  Each time you choose an ECO Bulb over a regular incandescent
bulb, you save one barrell of oil.  That's right; one light bulb saves a whole
barrell of oil.

Convinced yet?  The Sierra Club of Fort Worth, Texas is selling Eco Bulbs
for $10.70 each, tax included.  Half of the proceeds will be donated to the
Fort Worth Habitat for Humanity.  If you'd like to order some bulbs, please
contact Karen Foley at (817) 467-5799.  This offer does not include shipping
and is mainly intended for Fort Worth area residents.  If you live elsewhere
and would be willing to pay for your own shipping, an arrangement could be
reached.  These bulbs typically cost around $15 in stores, so if you're
planning to buy several, you would likely save money through this offer,
even with additional shipping costs.  If you'd rather purchase compact
flourescent bulbs from a merchant closer to home, please check nearby hardware
and lighting stores.

ECO Bulbs are an easy way to save money and lessen your impact on the
environment.

*=======================================================================*
 Mark Blythe           http://www.dfw.net/~blythe         blythe@dfw.net
 -----------------------------------------------------------------------
 "If one advances confidently in the direction of his dreams, and
  endeavors to live the life which he has imagined, he will meet with a
  success unexpected in common hours." - Henry David Thoreau, "Walden"
*=======================================================================*



From ajtroske@aloha.com Sat Mar 11 22:10:48 EST 1995
Article: 1667 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!udel!news.mathworks.com!uunet!coconut-wireless!ajtroske
From: ajtroske@aloha.com (Andrew Troske)
Newsgroups: sci.engr.lighting
Subject: IESNA Handbook
Date: 5 Mar 1995 07:15:34 GMT
Organization: Flex Information Network HAWAII
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I am looking for a way to order the IESNA (Illumination engineering 
society of North America - I think) Handbook.  I remember using this in 
the past but don't know how to get a current copy.  Thanks in advance.

drew
ajtroske@aloha.com



From paragon@sas.ab.ca Sat Mar 11 22:10:49 EST 1995
Article: 1668 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!cs.utexas.edu!utnut!torn!news.bc.net!rover.ucs.ualberta.ca!news.sas.ab.ca!paragon
From: paragon@sas.ab.ca (Ken Tetterington)
Newsgroups: sci.engr.lighting
Subject: Light Detector?
Date: 4 Mar 1995 05:40:30 GMT
Organization: Software Alberta Society, Edmonton, Canada
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I am not sure if this is the proper group for this but I am looking for a 
small device capable of detecting a light small light source as being on 
or off. I had a solor battery idea in mind but it would be to slow to 
respond. Does any one have any ideas about such a device on the market?
  I know I am being vauge but I know what I want it for but not what it is.
  Ken Tetterington    paragon@sas.ab.ca



From gjpower@netcom.com Sat Mar 11 22:10:51 EST 1995
Article: 1669 of sci.engr.lighting
Newsgroups: sci.engr.lighting
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From: gjpower@netcom.com (Gerry Power)
Subject: Re: ECO Bulbs
Message-ID: <gjpowerD4zCCv.28C@netcom.com>
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Eco bulb?

Does it contain mercury and toxic elements/chemicals?

Most incandescent bulbs don't...

Is it self-ballasted with a "disposable" ballast that will use resources 
to make and just end up in a landfill, or is the lamp replaceable without 
trashing the ballast?

How does fixing one problem and creating another _really_  help the 
environment?

Sorry to pick on _this_ particular lamp, but the "Green Lights" 
designation is a travesty when we save energy and needlessy pollute and 
create useless, non-reusable components that could _easily_ be designed 
and manufactured to be recycled and reused.

End of diatribe #1021

Gerry
-- 
 -----------------------------------------------------------------------------
    Gerry Power               |  *Certain of these images did not fit into
    gjpower@netcom.com        |   any narrative I knew.*
    irc: BigRdBear            |  Joan Didion, _The_White_Album_
 -----------------------------------------------------------------------------


From jerryfrank@aol.com Sat Mar 11 22:10:53 EST 1995
Article: 1670 of sci.engr.lighting
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From: jerryfrank@aol.com (JerryFrank)
Newsgroups: sci.engr.lighting
Subject: Re: Light Detector?
Date: 5 Mar 1995 14:11:44 -0500
Organization: America Online, Inc. (1-800-827-6364)
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NNTP-Posting-Host: newsbf02.mail.aol.com

Ken Tetterington writes:
<I am not sure if this is the proper group for this but I am looking for a

<small device capable of detecting a light small light source as being on 
<or off. I had a solor battery idea in mind but it would be to slow to 
<respond. Does any one have any ideas about such a device on the market?
 <I know I am being vauge but I know what I want it for but not what it
is.


PIN photodiodes are cheap, sensitive, fast and reliable but require some
support circuitry.  HP, TI and Burr-Brown make all sorts of neat
opto-electronic devices.  You will have to decide on the radiation band of
interest, power supply requirements, and what sort of output you want from
your detector; analog, digital or frequency.
Good Luck
Jerry Frank


From YVAP00A@prodigy.com Sat Mar 11 22:10:55 EST 1995
Article: 1671 of sci.engr.lighting
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From: YVAP00A@prodigy.com (Thomas Tolen)
Newsgroups: sci.engr.lighting
Subject: Re: IESNA Handbook
Date: 6 Mar 1995 01:53:48 GMT
Organization: Prodigy Services Company  1-800-PRODIGY
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The IESNA Handbook is available from the IES at:
IESNA Publications
120 Wall Street, 17th Floor
New York, NY 10005
Telephone:  (212) 248-5000, Ext. 112
Fax:  (212) 248-4017



From bwi4617@silver.sdsmt.edu Sat Mar 11 22:10:56 EST 1995
Article: 1672 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!udel!gatech!ncar!uchinews!vixen.cso.uiuc.edu!news.ksu.ksu.edu!news.mid.net!krypton.hpc.sdsmt.edu!silver.sdsmt.edu!bwi4617
From: bwi4617@silver.sdsmt.edu (Brion Ideker)
Newsgroups: sci.engr.lighting
Subject: LED ascii driver
Date: 3 Mar 1995 18:47:41 GMT
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From orlites@aol.com Sat Mar 11 22:10:57 EST 1995
Article: 1673 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swiss.ans.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: orlites@aol.com (ORLITES)
Newsgroups: sci.engr.lighting
Subject: Re: software controlled dimmers
Date: 6 Mar 1995 00:54:05 -0500
Organization: America Online, Inc. (1-800-827-6364)
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NNTP-Posting-Host: newsbf02.mail.aol.com

There are a few applications that can control dimmers via a PC. (If I
understand you correctly) This of course still requires a conventional
controller to stand in line and act as an interface for cue storage. 

As for the dimmable flourescent, try Lighting and Electronics new fixture.
Comes double and single tube and has been very impressive in many
applications and demos. L&E is in upstate N.Y. or if you need help with
purchasing feel free to give me a call @ :

(407) 246-7071
Rob Bourgeois
Orlando, FL.



From tony@iac.net Sat Mar 11 22:10:59 EST 1995
Article: 1674 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!cs.utexas.edu!news.sprintlink.net!news.charm.net!sun.cais.com!news.iac.net!news.iac.net!not-for-mail
From: tony@iac.net
Newsgroups: sci.engr.lighting
Subject: rain on asphalt
Date: 5 Mar 1995 23:37:54 -0500
Organization: Internet Access Cincinnati 513-887-8877
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How to model industrial lights reflected from the water pockets
on asphalt road?

Tony
P.S. I am mystified.


From stuartl@netcom.com Sat Mar 11 22:11:00 EST 1995
Article: 1675 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!gt-news!news
From: stuart.lewis@arch.gatech.edu (Stuart Lewis)
Newsgroups: sci.engr.lighting,sci.energy
Subject: Ann: Building Sci. Resource Page
Date: 6 Mar 1995 16:21:53 GMT
Organization: GT
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Xref: bigblue.oit.unc.edu sci.engr.lighting:1675 sci.energy:29317

I have put together a WWW page with a number of links and pointers
to building science information, specifically relating to energy 
and illumination.

It can be found at:
<a href="file://ftp.netcom.com/pub/st/stuartl/resources.html"></a>

Comments and suggestions are welcomed.
Enjoy!

Stuart Lewis
<stuartl@netcom.com>


From Lighting@garnet.nist.gov Sat Mar 11 22:11:02 EST 1995
Article: 1676 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!udel!news.mathworks.com!newshost.marcam.com!uunet!dove.nist.gov!gateway
From: KenBeyer@aol.com
Newsgroups: sci.engr.lighting
Subject: W3 Links
Date: 6 Mar 1995 12:12:53 -0500
Organization: NIST
Lines: 15
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For all of you Web crawlers, the Kansas State University student chapter of
IES is developing a home page on the Net.  Currently most of the information
on the page is about our local chapter's projects and activities.  However,
we would like to expand the page to include links to lighting resources all
over the world.

If you know of any such resources that we could link to, please let me know
and I will include them on our page.  To browse our page, using Mosaic, point
your URL to 'http://www.ksu.edu/~kenbeyer/ies.html'.

Thanks for your help,

Ken Beyer
President
KSU IES


From Lighting@garnet.nist.gov Sat Mar 11 22:11:03 EST 1995
Article: 1677 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!udel!news.mathworks.com!newshost.marcam.com!uunet!dove.nist.gov!gateway
From: keithd@rintintin.Colorado.EDU (KEITH  DAVID MIDDLEBROOK)
Newsgroups: sci.engr.lighting
Subject: Re: IES files
Date: 6 Mar 1995 12:35:11 -0500
Organization: University of Colorado, Boulder
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NNTP-Posting-Host: dove.nist.gov

I didn't see your original posting . . but I might be able to help with this.

David Keith
keithd@colorado.edu


From bergmana@aol.com Sat Mar 11 22:11:04 EST 1995
Article: 1678 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!howland.reston.ans.net!swiss.ans.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: bergmana@aol.com (Bergmana)
Newsgroups: sci.engr.lighting
Subject: T-8 Optic Bulbs
Date: 6 Mar 1995 14:32:27 -0500
Organization: America Online, Inc. (1-800-827-6364)
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I am a school principal in New Jersey.  Our school system is converting to
T-8 full spectrum optic bulbs.  Some teachers find them too harsh.  My own
observation is that children's faces seem to have a red cast under this
lighting.  Is there anyone who knows anything about these bulbs and,
perhaps even more importantly, about any studies in which bulbs have been
related to pupil behavior?

Please e-mail comments to:    abergman@llwnet.ll.pbs.org
Hint:  those are lowercase "ells;"  not the number 1.   

Thank you,

Abby B. Bergman
"The unexamined life is not worth living."       PLATO


From ecs@electrochem.org Sat Mar 11 22:11:06 EST 1995
Article: 1679 of sci.engr.lighting
Newsgroups: ieee.announce,sci.bio,sci.bio.microbiology,sci.chem,sci.chem.electrochem,sci.chem.organomet,sci.edu,sci.electronics,sci.energy,sci.energy.hydrogen,sci.engr,sci.engr.biomed,sci.engr.chem,sci.engr.lighting,sci.engr.mech,sci.engr.metallurgy
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!agate!howland.reston.ans.net!newsserver.jvnc.net!jvnc.net!ringotty13.jvnc.net!ecs
From: ecs@electrochem.org (The Electrochemical Society Staff)
Subject: New ECS Home Page
Message-ID: <ecs.391.0071256D@electrochem.org>
Lines: 21
Sender: news@tigger.jvnc.net (Zee News Genie)
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Date: Mon, 6 Mar 1995 15:03:38 GMT
Xref: bigblue.oit.unc.edu ieee.announce:463 sci.bio:21786 sci.bio.microbiology:474 sci.chem:34067 sci.chem.electrochem:1058 sci.chem.organomet:783 sci.edu:6598 sci.electronics:106486 sci.energy:29321 sci.energy.hydrogen:1853 sci.engr:13436 sci.engr.biomed:3526 sci.engr.chem:6196 sci.engr.lighting:1679 sci.engr.mech:11893 sci.engr.metallurgy:815

       The Electrochemical Society, Inc. has recently launched it's own Home 
Page on the World Wide Web, located at the following address: 
http://www.electrochem.org/ecs/.  The Electrochemical Society, Inc., 
founded in 1902, provides the principal forum for the presentation of 
scientific research and technology advancement in the fields of 
electrochemistry and solid state science and technology.  The Electrochemical 
Society, Inc. is an international educational, nonprofit organization 
concerned with a broad range of phenomena related to electrochemical and solid 
state science and technology with more than 6,000 scientists and engineers in 
over 60 countries worldwide who hold active membership.

        We  invite you to browse through our new ECS Home Page to learn 
more about the Society and what it has to offer.  For additional information 
and an application for admission, contact The Electrochemical Society 
Membership Department, 10 South Main Street, Pennington, New Jersey  
08534-2896 USA, Phone: (609) 737-1902, Fax: (609) 737-2743, E-mail: 
ecs@electrochem.org; Web Page: http://www.electrochem.org/ecs/.






From Lighting@garnet.nist.gov Sat Mar 11 22:11:09 EST 1995
Article: 1680 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!zombie.ncsc.mil!news.mathworks.com!uunet!dove.nist.gov!gateway
From: crawford@noao.edu (Dave Crawford)
Newsgroups: sci.engr.lighting
Subject: Re: W3 Links
Date: 6 Mar 1995 13:17:48 -0500
Organization: NIST
Lines: 45
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Approved: news
Message-ID: <9503061720.AA26156@orion.tuc.noao.edu>
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>For all of you Web crawlers, the Kansas State University student chapter of
>IES is developing a home page on the Net.  Currently most of the information
>on the page is about our local chapter's projects and activities.  However,
>we would like to expand the page to include links to lighting resources all
>over the world.
>
>If you know of any such resources that we could link to, please let me know
>and I will include them on our page.  To browse our page, using Mosaic, point
>your URL to 'http://www.ksu.edu/~kenbeyer/ies.html'.
>
>Thanks for your help,
>
>Ken Beyer
>President
>KSU IES
>


Hi Ken,

Nice to see notice of your page.  I will have a look and email any comments
later.

The INternational Dark-Sky Association, whose goals are to promote the value
of dark skies and of quality outdoor nighttime lighting, has a page you
might want to reference.  Its temporay home is :
http://cfa-www.harvard.edu/cfa/ps.nelpag/ida/IDA1.html

NELPAG has a page too, with a link from the ida page.

In time, the Web should be a most valuable resource for anyone interested in
lighting.  Let's hope that the IES as a whole (and the CIE) gets a presence
too in the not too distant future.

I'll get back after I have seen the pages.

Regards,

Dave Crawford
Dr. David L. Crawford
NOAO, Box 26732, Tucson AZ 85726 USA
Email:  crawford@noao.edu
Phone:  602-325-9346        Fax:  602-325-9360




From Lighting@garnet.nist.gov Sat Mar 11 22:11:10 EST 1995
Article: 1681 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news.sprintlink.net!uunet!in1.uu.net!dove.nist.gov!gateway
From: robpen@wseo.wa.gov (Rob Penney)
Newsgroups: sci.engr.lighting
Subject: Re: W3 Links
Date: 6 Mar 1995 18:42:27 -0500
Organization: Washington State Energy Office
Lines: 32
Sender: daemon@dove.nist.gov
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Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"


I think
 ----------
John Bolduan wrote:
****************************************************************************
********
Please include The Lighting Resource as a URL link. Take a look if you
like. I will put yours as a link in our page(s).

http://www.webcom.com/~lightsrc/

Email me with any questions.

Best regards,
John Bolduan
JBolduan@ix.netcom.com
****************************************************************************
*********

I think that an announcement of John's new Web site deserves more fanfare
than that.  It covers all aspects of lighting, with a focus on real world
solutions and design recommendations.  It features reprinted articles from
lighting journals (this months is the excellent article on sulfur lighting
from IAEEL), energy-efficient lighting upgrade of the month, new products,
industry news, calendar of events, and gateways to over a dozen
lighting-related information resources on the Internet--the best I've seen
yet.  It's a young site, just getting started, but very sharp, well
organized, and headed in a great direction.  Give it a try.

Rob Penney
robpen@wseo.wa.gov



From Lighting@garnet.nist.gov Sat Mar 11 22:11:15 EST 1995
Article: 1682 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!udel!news.mathworks.com!newshost.marcam.com!uunet!in1.uu.net!dove.nist.gov!gateway
From: JBolduan@ix.netcom.com (John Bolduan)
Newsgroups: sci.engr.lighting
Subject: Re: W3 Links
Date: 7 Mar 1995 08:14:26 -0500
Organization: NIST
Lines: 72
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <199503071244.EAA18437@ix3.ix.netcom.com>
Reply-To: Lighting@garnet.nist.gov
NNTP-Posting-Host: dove.nist.gov

You wrote:

>
>>For all of you Web crawlers, the Kansas State University student
chapter of
>>IES is developing a home page on the Net.  Currently most of the
information
>>on the page is about our local chapter's projects and activities.
However,
>>we would like to expand the page to include links to lighting
resources all
>>over the world.
>>
>>If you know of any such resources that we could link to, please let me
know
>>and I will include them on our page.  To browse our page, using
Mosaic, point
>>your URL to 'http://www.ksu.edu/~kenbeyer/ies.html'.
>>
>>Thanks for your help,
>>
>>Ken Beyer
>>President
>>KSU IES
>>
>
>
>Hi Ken,
>
>Nice to see notice of your page.  I will have a look and email any
comments
>later.
>
>The INternational Dark-Sky Association, whose goals are to promote the
value
>of dark skies and of quality outdoor nighttime lighting, has a page you
>might want to reference.  Its temporay home is :
>http://cfa-www.harvard.edu/cfa/ps.nelpag/ida/IDA1.html
>
>NELPAG has a page too, with a link from the ida page.
>
>In time, the Web should be a most valuable resource for anyone
interested in
>lighting.  Let's hope that the IES as a whole (and the CIE) gets a
presence
>too in the not too distant future.
>
>I'll get back after I have seen the pages.
>
>Regards,
>
>Dave Crawford
>Dr. David L. Crawford
>NOAO, Box 26732, Tucson AZ 85726 USA
>Email:  crawford@noao.edu
>Phone:  602-325-9346        Fax:  602-325-9360
>
>Dave,

I've included your URL to our related lighting and energy links page at
The Lighting Resource at http://www.webcom.com/~lightsrc/

Hope that is ok! I feel it will be helpful and insightful to that aspect
of lighting.

Best regards,
John Bolduan
>
>





From Lighting@garnet.nist.gov Sat Mar 11 22:11:17 EST 1995
Article: 1683 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!uunet!in1.uu.net!dove.nist.gov!gateway
From: JBolduan@ix.netcom.com (John Bolduan)
Newsgroups: sci.engr.lighting
Subject: Re: W3 Links
Date: 6 Mar 1995 14:19:59 -0500
Organization: NIST
Lines: 39
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <199503061844.KAA06663@ix3.ix.netcom.com>
Reply-To: Lighting@garnet.nist.gov
NNTP-Posting-Host: dove.nist.gov

You wrote:

>
>For all of you Web crawlers, the Kansas State University student
chapter of
>IES is developing a home page on the Net.  Currently most of the
information
>on the page is about our local chapter's projects and activities.
However,
>we would like to expand the page to include links to lighting resources
all
>over the world.
>
>If you know of any such resources that we could link to, please let me
know
>and I will include them on our page.  To browse our page, using Mosaic,
point
>your URL to 'http://www.ksu.edu/~kenbeyer/ies.html'.
>
>Thanks for your help,
>
>Ken Beyer
>President
>KSU IES
>
>
Mr. Beyer,

Please include The Lighting Resource as a URL link. Take a look if you
like. I will put yours as a link in our page(s).

http://www.webcom.com/~lightsrc/

Email me with any questions.

Best regards,
John Bolduan
JBolduan@ix.netcom.com



From ilumenator@aol.com Sat Mar 11 22:11:19 EST 1995
Article: 1684 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!taco.cc.ncsu.edu!gatech!howland.reston.ans.net!newsjunkie.ans.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: ilumenator@aol.com (Ilumenator)
Newsgroups: sci.engr.lighting
Subject: Re: T-8 Optic Bulbs
Date: 6 Mar 1995 22:22:59 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 17
Sender: root@newsbf02.news.aol.com
Message-ID: <3jgjij$dqr@newsbf02.news.aol.com>
References: <3jfo0b$6hn@newsbf02.news.aol.com>
Reply-To: ilumenator@aol.com (Ilumenator)
NNTP-Posting-Host: newsbf02.mail.aol.com

You wrote:
I am a school principal in New Jersey.  Our school system is converting to
T-8 full spectrum optic bulbs.  Some teachers find them too harsh.  My own
observation is that children's faces seem to have a red cast under this
lighting.  Is there anyone who knows anything about these bulbs and,
perhaps even more importantly, about any studies in which bulbs have been
related to pupil behavior?

T-8 lamps are available in a variety of color temperatures. If the color
seems too red to you, you may want to try a 4100 K lamp.  I am a little
confused by your use of the term "full spectrum."  Does this mean that the
lamp emits Ultraviolet A, B and C? 
I can't give you any particular studies relating lamp technology with
student behavior.  However, it has been demonstrated on numerous occasions
that a well-lighted educational environment improves vision and visual
performance.  Whether or not this affects behavior is debatable. 
Feel free to contact me, if I can be of any help.  


From Lighting@garnet.nist.gov Sat Mar 11 22:11:21 EST 1995
Article: 1685 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!udel!news.mathworks.com!uunet!in1.uu.net!dove.nist.gov!gateway
From: X0401DAA@AWIUNI11.EDVZ.UNIVIE.AC.AT (CIE, C.Hermann)
Newsgroups: sci.engr.lighting
Subject: WWW
Date: 8 Mar 1995 08:03:25 -0500
Organization: NIST
Lines: 16
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <01HNVVLIVHW2001X8W@ENH.NIST.GOV>
Reply-To: Lighting@garnet.nist.gov
NNTP-Posting-Host: dove.nist.gov
Content-Transfer-Encoding: 7BIT



In response to the message of Ken Beyer to the USNC Lighting Mailing List, re
"W3 Links", we can inform you that CIE information is available on WWW under the
URL:

http://www.hike.te.chiba-u.ac.jp/ikeda/CIE/home.html

(You will find here general information on CIE, our publication list and the
press releases of all our publications.)

Sincerely yours,
Christine Hermann
Office Manager
CIE Central Bureau
x0401daa@vm.univie.ac.at


From macrakis@osf.org Sat Mar 11 22:11:24 EST 1995
Article: 1686 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!bloom-beacon.mit.edu!paperboy.osf.org!usenet
From: macrakis@osf.org (Stavros Macrakis)
Newsgroups: sci.engr.lighting
Subject: Re: Ann: Building Sci. Resource Page
Date: 08 Mar 1995 17:07:06 GMT
Organization: OSF Research Institute
Lines: 32
Message-ID: <MACRAKIS.95Mar8120706@lakatos.osf.org>
References: <3jfcr1$8fq@mordred.gatech.edu> <jc_hail-070395124247@jc_hail.pnl.gov>
	<3jipm9$hdo@mordred.gatech.edu>
NNTP-Posting-Host: lakatos.osf.org
In-reply-to: stuart.lewis@arch.gatech.edu's message of 7 Mar 1995 23:19:37 GMT

In articles <3jfcr1$8fq@mordred.gatech.edu> and <3jipm9$hdo@
mordred.gatech.edu>, stuart.lewis@arch.gatech.edu (Stuart Lewis)
writes:

   ...a WWW page [on] building science, ...specifically... energy
   and illumination....at:

   <a href="file://ftp.netcom.com/pub/st/stuartl/resources.html"></a>...

   The page is actually on an ftp server rather than a www server, so
   if you specify 'http:' instead of 'file:' in your URL the document
   will not be retrieved properly.

Actually, "file:" is not the correct specification, and <a...> is not
the correct citation form for URL's.  The correct form is:

	ftp://ftp.netcom.com/pub/st/stuartl/resources.html

According to the URL spec, "file:" "does not designate a resource that
is universally accessible over the Internet".  As for <a...>, that is
the anchor used to reference the document within HTML, but the
location of the document itself is as above.  Note also that serving
the document via ftp rather than http means that the client (browser)
needs to "guess" how to display it.  Sure, it starts with <html>, so
that seems clear, but using HTTP makes things clearer.  So I'd suggest
you move to a WWW server when you can.

This all sounds nitpicky, doesn't it?  But it does make a difference
to the end user.

	-s



From muscrost@quad.synapse.net Sat Mar 11 22:11:26 EST 1995
Article: 1687 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!newsjunkie.ans.net!fonorola!sentinel.synapse.net!quad.synapse.net!muscrost
From: muscrost@quad.synapse.net (This is me!)
Newsgroups: sci.engr.lighting
Subject: Re: Ann: Building Sci. Resource Page
Date: Wed, 8 Mar 1995 12:53:38 LOCAL
Organization: Me! Organized?,  I don't think so!
Lines: 20
Distribution: world
Message-ID: <muscrost.4.00454355@quad.synapse.net>
References: <3jfcr1$8fq@mordred.gatech.edu> <jc_hail-070395124247@jc_hail.pnl.gov>
NNTP-Posting-Host: quad.synapse.net
X-Newsreader: Trumpet for Windows [Version 1.0 Rev B final beta #4]



>hppt://ftp.netcom.com/pub/st/stuartl/resources.html

>and Mosaic looked and looked but I canceled the request.  Should I try it
>again or something else?

>Thanks

>John


FYI: to connect to a ftp site use the following in Mosaic (or, even better 
Netscape)
ftp://netcom.com/pub/st/stuartl/resources.html

The ftp:// is the type of site you are going to, and the rest is the URL 
 or "real" address.

Have fun.


From root@instn.saclay.cea.fr Sat Mar 11 22:11:27 EST 1995
Article: 1688 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!math.ohio-state.edu!jussieu.fr!cea.fr!crochet.saclay.cea.fr!root
From: root@instn.saclay.cea.fr (Jerome CHAROUSSET)
Newsgroups: sci.engr.lighting
Subject: DMX512 question
Date: 9 Mar 1995 12:46:24 GMT
Organization: CEA/INSTN
Lines: 11
Message-ID: <3jmtb0$f35@anemone.saclay.cea.fr>
NNTP-Posting-Host: 132.166.160.9
X-Newsreader: TIN [version 1.2 PL2]

Hi,

I would be interested in having any information or specs about the
DMX 512 bus, which is commonly used for showlights command (i.e between
the light manager computer and high-tech lights, like Scans).

Thank you for your help,

	Jerome CHAROUSSET
	jcharous@instn.saclay.cea.fr



From jtp@multiball.spb.su Sat Mar 11 22:11:29 EST 1995
Article: 1689 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!EU.net!news.eunet.fi!KremlSun!kiae!relcom!arcom.rcom.spb.su!arcom.rcom.spb.su!not-for-mail
From: Tatjana P. Jurilo <jtp@multiball.spb.su>
Newsgroups: sci.engr.lighting
Subject: animated cartoons
Date: 9 Mar 1995 20:47:13 +0300
Organization: MultiBall
Lines: 45
Sender: news@arcom.rcom.spb.su
Distribution: world
Message-ID: <AAcppNla_5@multiball.spb.su>
NNTP-Posting-Host: arcom.rcom.spb.su
Keywords: animation
X-Return-Path: multib!multiball.spb.su!jtp

     MicroStudio 2.5D

It is your portable personal Studio.

Multiball  Company programme turns your computer into the Studio
for creating cartoons that can be used  in  different  fields  -
entertaing, studing, advertising, presenting.
The  programme  gives  you a chance to aquire computer animation
world.
Multiball Company offers you the Studio for producing movies.
Studio works on any IBM computer from 286th to the latest model.
If you are told that there  has  been  something  similar  don't
beleive you have never seen it before.

Studio contains three "rooms".

The first room "CARTOON" is so called backstage.
Here you create your characters, dress them up,  apply  some  "make
up", create decorations, and choose music for your film.

The second room "SCRIPT" is a set.
Here you are the king.
If you learn the computer language, which consists of 130 commands,
you will be able to fulfill your ideas at the set.
"SCRIPT" room is a magic one.
The  more  up-to-date computer you have the more interesting movie
you create.
With the help of our portable Studio you  can  create  books  with
moving  pictures,  graphic  reference  books  and  a  lot  of other
interesting things.
Everything depends on the fantasy and creativity of those who will
work with MicroStudio 2.5D.

The third room "CAMERA" is the cinema.
Here you watch a film that has been just created.
Films are showed on the screen of a personal computer in a real time.

Good luck,
Multiball Company


Address for refference:

e/mail:    JTP@MULTIBALL.SPB.SU



From zarnott@aol.com Sat Mar 11 22:11:30 EST 1995
Article: 1690 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!newsjunkie.ans.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: zarnott@aol.com (ZARNOTT)
Newsgroups: sci.engr.lighting
Subject: Re: software controlled dimmers
Date: 8 Mar 1995 22:13:24 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 13
Sender: root@newsbf02.news.aol.com
Message-ID: <3jlrok$s1t@newsbf02.news.aol.com>
References: <3j60j3$vgg@usenetp1.news.prodigy.com>
Reply-To: zarnott@aol.com (ZARNOTT)
NNTP-Posting-Host: newsbf02.mail.aol.com

I guess if you have a controller that converts digital to 0 -10VDC you can
drive the Advance MKVII, and Motorola Helios Ballasts.  

Lutron's new ballast is called Eco-10 because it is a 10% dimming ballast
as compared to the Hi-lume 1% model.  They use a phase control 3-wire
system that would need to be run through an inexpensive module they call a
"BCI" to be controlled via a 0-10VDC signal.  If you call them, they may
have another way they dim via computer.  Talk to Dave Luchaco.  He's one
of the best dimming engineers on the planet.

BTW - They have been shipping the Eco-10 for a couple months now.

Mike Z


From jc_hail@pnl.gov Sat Mar 11 22:11:32 EST 1995
Article: 1691 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!taco.cc.ncsu.edu!gatech!swrinde!elroy.jpl.nasa.gov!lll-winken.llnl.gov!osi-east2.es.net!oracle.pnl.gov!bbs.pnl.gov!jc_hail.pnl.gov!user
From: jc_hail@pnl.gov (John Hail)
Newsgroups: sci.engr.lighting
Subject: Re: Ann: Building Sci. Resource Page
Followup-To: sci.engr.lighting,sci.energy
Date: 7 Mar 1995 20:43:18 GMT
Organization: Me, Myself, and I
Lines: 26
Distribution: world
Message-ID: <jc_hail-070395124247@jc_hail.pnl.gov>
References: <3jfcr1$8fq@mordred.gatech.edu>
NNTP-Posting-Host: jc_hail.pnl.gov

In article <3jfcr1$8fq@mordred.gatech.edu>, stuart.lewis@arch.gatech.edu
(Stuart Lewis) wrote:
> 
> I have put together a WWW page with a number of links and pointers
> to building science information, specifically relating to energy 
> and illumination.
> 
> It can be found at:
> <a href="file://ftp.netcom.com/pub/st/stuartl/resources.html"></a>
> 
> Comments and suggestions are welcomed.
> Enjoy!
> 
> Stuart Lewis
> <stuartl@netcom.com>

I tried to connect in Mosaic to this:

hppt://ftp.netcom.com/pub/st/stuartl/resources.html

and Mosaic looked and looked but I canceled the request.  Should I try it
again or something else?

Thanks

John


From pcygan@is.dal.ca Sat Mar 11 22:11:34 EST 1995
Article: 1692 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news.sprintlink.net!uunet!in1.uu.net!newsflash.concordia.ca!nstn.ns.ca!ac.dal.ca!slip5.dal.ca!user
Newsgroups: sci.engr.lighting
Subject: Re: DMX512 standard?
Message-ID: <pcygan-090395190139@slip5.dal.ca>
From: pcygan@is.dal.ca (Philip Cygan)
Date: 9 Mar 95 19:01:46 -0400
Followup-To: sci.engr.lighting
References: <1995Feb21.131544.6824@inland.com>
Organization: axis mundi
Nntp-Posting-Host: slip5.dal.ca
Lines: 8

In article <1995Feb21.131544.6824@inland.com>, levin@inland.com wrote:

> Can anyone help me with the DMX512 standard?
> 
> Philip

I can't help you directly, but try posting a request on
re.arts.theatre.stagecraft.


From kka20@cus.cam.ac.uk Sat Mar 11 22:11:35 EST 1995
Article: 1693 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!udel!gatech!swrinde!pipex!lyra.csx.cam.ac.uk!kka20
From: kka20@cus.cam.ac.uk (K.K. Ang)
Newsgroups: sci.engr.lighting
Subject: Ultraviolet light on sheet polarizer and liquid crystal devices
Date: 8 Mar 1995 21:30:32 GMT
Organization: University of Cambridge, England
	I need any information (books, articles, journals, anything at all) on the following:
Lines: 9
Message-ID: <3jl7lo$n52@lyra.csx.cam.ac.uk>
NNTP-Posting-Host: bootes.cus.cam.ac.uk

1) UV sheet polarizers
2) Electro-optic effect on any liquid crystal devices with UV
3) Manufacturing process of sheet polarizers

Please send any info to kka20@cus.cam.ac.uk. Cheers!

								Kheng Ang




From stuartl@netcom.com Sat Mar 11 22:11:36 EST 1995
Article: 1694 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!taco.cc.ncsu.edu!gatech!gt-news!news
From: stuart.lewis@arch.gatech.edu (Stuart Lewis)
Newsgroups: sci.engr.lighting
Subject: Re: Ann: Building Sci. Resource Page
Date: 7 Mar 1995 23:19:37 GMT
Organization: Georgia Institute of Technology
Lines: 22
Message-ID: <3jipm9$hdo@mordred.gatech.edu>
References: <3jfcr1$8fq@mordred.gatech.edu> <jc_hail-070395124247@jc_hail.pnl.gov>
Reply-To: stuartl@netcom.com
NNTP-Posting-Host: j_newsome.gatech.edu
X-Newsreader: WinVN 0.92.5

In article <jc_hail-070395124247@jc_hail.pnl.gov>, jc_hail@pnl.gov (John Hail) says:
>
>
:
>> It can be found at:
>> <a href="file://ftp.netcom.com/pub/st/stuartl/resources.html"></a>
:
>I tried to connect in Mosaic to this:
>
>hppt://ftp.netcom.com/pub/st/stuartl/resources.html
>
>and Mosaic looked and looked but I canceled the request.  Should I try it
>again or something else?
>

The page is actually on an ftp server rather than a www server, so if 
you specify 'http:' instead of 'file:' in your URL the document will not 
be retrieved properly.  

(It will still look and act just like any other html document, however.)

-Stuart


From paragon@sas.ab.ca Sat Mar 11 22:12:38 EST 1995
Article: 1668 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!cs.utexas.edu!utnut!torn!news.bc.net!rover.ucs.ualberta.ca!news.sas.ab.ca!paragon
From: paragon@sas.ab.ca (Ken Tetterington)
Newsgroups: sci.engr.lighting
Subject: Light Detector?
Date: 4 Mar 1995 05:40:30 GMT
Organization: Software Alberta Society, Edmonton, Canada
Lines: 7
Message-ID: <3j8uge$nsd@news.sas.ab.ca>
NNTP-Posting-Host: dns.sas.ab.ca
X-Newsreader: TIN [version 1.2 PL2]

I am not sure if this is the proper group for this but I am looking for a 
small device capable of detecting a light small light source as being on 
or off. I had a solor battery idea in mind but it would be to slow to 
respond. Does any one have any ideas about such a device on the market?
  I know I am being vauge but I know what I want it for but not what it is.
  Ken Tetterington    paragon@sas.ab.ca



From ale0519@aol.com Sun Mar 12 12:40:30 EST 1995
Article: 1695 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!newsjunkie.ans.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: ale0519@aol.com (ALE0519)
Newsgroups: sci.engr.lighting
Subject: Re: animated cartoons
Date: 12 Mar 1995 00:30:07 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 9
Sender: root@newsbf02.news.aol.com
Message-ID: <3ju0sv$g13@newsbf02.news.aol.com>
References: <AAcppNla_5@multiball.spb.su>
Reply-To: ale0519@aol.com (ALE0519)
NNTP-Posting-Host: newsbf02.mail.aol.com

Hi, I am very interested in this package. 

Sounds like consumer product? Any industry users? 

Please e-mail me w/distributor and/or retail information for acquisition. 

Thanks.

Al. 


From ale0519@aol.com Sun Mar 12 12:40:33 EST 1995
Article: 1696 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!newsjunkie.ans.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: ale0519@aol.com (ALE0519)
Newsgroups: sci.engr.lighting
Subject: NEED SOFTWARE TO PREVIEW LIGHTING SETUPS?
Date: 12 Mar 1995 00:37:59 -0500
Organization: America Online, Inc. (1-800-827-6364)
Lines: 7
Sender: root@newsbf02.news.aol.com
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Reply-To: ale0519@aol.com (ALE0519)
NNTP-Posting-Host: newsbf02.mail.aol.com

Any recommendations please for such a package? I want to create lighting
setups on my PC and preview them to get an idea of what my setup will
actually look like? 

Thanks.

Al. 


From amichael@lighting-technologies.com Sun Mar 12 12:40:36 EST 1995
Article: 1697 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!godot.cc.duq.edu!newsfeed.pitt.edu!dsinc!ub!csn!csnnews!usenet
From: amichael@csn.org (Michael Smith)
Newsgroups: sci.engr.lighting
Subject: Job opening at Lighting Technologies
Date: 9 Mar 1995 17:31:02 GMT
Organization: Lighting Technologies, Inc.
Lines: 67
Message-ID: <3jne0m$qs2@news-2.csn.net>
Reply-To: amichael@lighting-technologies.com
NNTP-Posting-Host: 204.131.81.6
X-Newsreader: WinVN 0.92.5

Position Opening : Project Engineer

Description
-----------
Lighting Technologies is a growing engineering enterprise providing software    
and engineering services to the lighting industry. The products and services we 
offer include:

	- A suite of commercial lighting analysis software products (Lumen-Micro, 
	  Lumen-Specifier, and FiELD)
	- Custom lighting software for major lighting manufacturers
	- Optical design services for specialized applications

We have an immediate opening for a project engineer. Our engineers work in teams 
of two to five on projects that involve the development of user interfaces and 
lighting calculation algorithms.  Engineers are expected to participate in every 
aspect of the software development cycle, including:
	
	- Requirements specification
	- Software architecture
	- Detailed design and user interface design
	- Coding and debugging
	- Maintenance

Additionally, all engineers occasionally participate in consulting projects 
involving optical design and detailed lighting calculations.

Qualifications
--------------
Formal education in the principles of lighting design and application, including 
a thorough understanding of all aspects of lighting calculations.

One to three years in the lighting industry.  Knowledge of the design,      
manufacture, and distribution of lighting equipment is preferred.

One to three years experience with software development, including an 
understanding of modern programming practices.

Demonstrated experience in Basic and/or C/C++.  Specific experience with 
Microsoft Visual Basic, and Microsoft Visual C++ strongly preferred.

Solid knowledge of CAD, with a practical understanding of AutoCAD (or other 
major CAD package), and CAD file formats.

Thorough understanding of MS DOS, MS Windows 3.1x, and the typical suite of 
Windows-based productivity tools (spreadsheet, wordprocessor, presentation 
software, communication software, etc.)

Compensation 
------------
We offer an attractive compensation package, which includes full insurance, a 
401(k), flexible scheduling, and an education assistance program.   

How to respond
--------------
We have the vision, resources, and technical knowledge to bring high quality 
software products to the lighting industry.  If you would like to join our team, 
send a resume by e-mail, fax, or mail to:

Director of Engineering
Lighting Technologies, Inc.
2540 Frontier Avenue, Suite 107
Boulder, Colorado  80303 USA
fax: 		303-449-5964
e-mail: 	amichael@lighting-technologies.com
		amsmith@csn.org
		Compuserve: 71431,1224 


From keithd@bechtel.Colorado.EDU Sun Mar 12 12:40:40 EST 1995
Article: 1698 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!cs.utexas.edu!math.ohio-state.edu!magnus.acs.ohio-state.edu!csn!boulder!keithd
From: keithd@bechtel.Colorado.EDU (KEITH  DAVID MIDDLEBROOK)
Newsgroups: sci.engr.lighting
Subject: AASHTO contact
Date: 8 Mar 1995 19:08:10 GMT
Organization: University of Colorado, Boulder
Lines: 4
Distribution: world
Message-ID: <3jkvaq$ic8@lace.Colorado.EDU>
NNTP-Posting-Host: bechtel.colorado.edu

I am looking for the AASHTO address or phone number or - could it be 
possible? - email address.  Please reply to me directly at

keithd@colorado.edu


From Lighting@garnet.nist.gov Tue Mar 14 01:08:02 EST 1995
Article: 1699 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!udel!news.mathworks.com!uunet!in1.uu.net!dove.nist.gov!gateway
From: epiraino@aix1.ucv.cl (Enrique Piraino Davidson)
Newsgroups: sci.engr.lighting
Subject: Re: Forward Raytracer
Date: 13 Mar 1995 14:39:14 -0500
Organization: NIST
Lines: 73
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <epiraino.36.0010201B@aix1.ucv.cl>
Reply-To: Lighting@garnet.nist.gov
NNTP-Posting-Host: dove.nist.gov

In article  sick@ise.fhg.de writes:
>Received: from garnet.nist.gov by aix1.ucv.cl (AIX 3.2/UCB 5.64/4.03)
>          id AA13747; Mon, 13 Mar 1995 13:58:41 -0600
>X-Listname: "sci.engr.lighting <==> Aux Mailing List" <Lighting@garnet.nist.gov>
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>          1995 11:26:28 EST
>Received: from server1.ise.fhg.de by ise.fhg.de (5.0/SMI-SVR4) id AA03959; Mon,
>          13 Mar 1995 17:17:26 --100
>Received: from tos24 by server1; Mon, 13 Mar 95 17:17:16 +0100
>Received: by tos24; Mon, 13 Mar 1995 17:17:16 +0100
>From: sick@ise.fhg.de
>Reply-To: Lighting@garnet.nist.gov
>Message-Id: <9503131617.AA00929@tos24.ise.fhg.de>
>Subject: Forward Raytracer
>To: Lighting@garnet.nist.gov (lighting)
>Date: Mon, 13 Mar 1995 17:17:16 +0100 (MEZ)
>Cc: gerold@ise.fhg.de (Gerold Furler),
>        apian@ise.fhg.de (Peter
>    Apian-Bennewitz),
>        manuel@ise.fhg.de (Manuel Goller),
>        jjj@ise.fhg.de
>    (Joerg Jungjohann)
>X-Mailer: ELM [version 2.4 PL22]
>Mime-Version: 1.0
>Content-Type: text/plain; charset=US-ASCII
>Content-Transfer-Encoding: 7bit
>Content-Length: 848


>We are looking for a forward raytracing program capable to analyze
>bidirectional reflection/transmission properties of optical elements.
>These elements should be of very general type allowing
>any given geometry and any transmissive, diffuse (also non-Lambertian,
>if possible) and direct reflective and refractive property.

>Can anybody prevent us from reinventing the wheel?

>Fred Sick
>Daylighting Group at FhG-ISE
>--
>----------------------------------------------------------------------------
>Friedrich Sick   MAIL : Fraunhofer Institute for Solar Energy Systems
>                        Oltmannsstr. 5
>                        D-79100 Freiburg
>                        Germany
>                 PHONE: +49-(0)761-4588-133    FAX: +49-(0)761-4588-132
>                 email: sick@ise.fhg.de
>----------------------------------------------------------------------------
Friedrich:

I suspect that a person named Chris Parks E-mail
Parks@physics.purdue.edu could have some developments that help you to solve
the problem.


Good Luck









       Enrique Piraino Davidson        *   INTERNET: epiraino@aix1.ucv.cl
     Lighting Studies Department      *  BITNET  : epiraino at ucvvm1
  School of Electrical Engineering    * MAIL    :   P.O.BOX 4059
 Universidad Catolica de Valparaiso               Valparaíso-CHILE
             CHILE                                  *   FAX     : 56-32-215380


From mark.stephens@gsfc.nasa.gov Tue Mar 14 01:08:03 EST 1995
Article: 1700 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!udel!news.mathworks.com!zombie.ncsc.mil!cs.umd.edu!newsfeed.gsfc.nasa.gov!mstephens.gsfc.nasa.gov!user
From: mark.stephens@gsfc.nasa.gov (mark stephens)
Newsgroups: sci.engr.lighting
Subject: Re: software controlled dimmers
Date: Mon, 13 Mar 1995 15:19:46 -0500
Organization: NASA Goddard Space Flight Center -- Greenbelt, Maryland USA
Lines: 26
Message-ID: <mark.stephens-1303951519460001@mstephens.gsfc.nasa.gov>
References: <3j60j3$vgg@usenetp1.news.prodigy.com> <3jlrok$s1t@newsbf02.news.aol.com>
NNTP-Posting-Host: mstephens.gsfc.nasa.gov

Sorry if I'm jumping into the middle of a thread....

Are these for fluorescent lights?  And if so, what would be a ball park
price and can these be purchased at a good local lighting store?

thanks!

mark



In article <3jlrok$s1t@newsbf02.news.aol.com>, zarnott@aol.com (ZARNOTT) wrote:

> I guess if you have a controller that converts digital to 0 -10VDC you can
> drive the Advance MKVII, and Motorola Helios Ballasts.  
> 
> Lutron's new ballast is called Eco-10 because it is a 10% dimming ballast
> as compared to the Hi-lume 1% model.  They use a phase control 3-wire
> system that would need to be run through an inexpensive module they call a
> "BCI" to be controlled via a 0-10VDC signal.  If you call them, they may
> have another way they dim via computer.  Talk to Dave Luchaco.  He's one
> of the best dimming engineers on the planet.
> 
> BTW - They have been shipping the Eco-10 for a couple months now.
> 
> Mike Z


From Lighting@garnet.nist.gov Sun May 14 01:21:15 EDT 1995
Article: 1989 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!uunet!dove.nist.gov!gateway
From: ltgdes@aol.com
Newsgroups: sci.engr.lighting
Subject: Re: designers wanted to rate lighting conditi
Date: 8 May 1995 00:25:05 -0400
Organization: NIST
Lines: 15
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <9505080412.AA15939@newsbf02.news.aol.com>
References: <2FAD1CF2@coursmtp.nrc.ca>
Reply-To: Lighting@garnet.nist.gov
NNTP-Posting-Host: dove.nist.gov

Jennifer:

I would be happy to help.  I'm in San Francisco.  Does that preclude me/
Does one need to be near Ottawa?

If not:

Steven Kennedy
LIGHTING DESIGN
380 Rolph Street
San Francisco, CA, USA 94112

PH: 415-452-3212

EMAIL ltgdes@aol.com


From dimitri@physics.ubc.ca Sun May 14 01:21:17 EDT 1995
Article: 1990 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!europa.chnt.gtegsc.com!library.ucla.edu!unixg.ubc.ca!dimitri
From: dimitri@physics.ubc.ca (Dimitri Sirota)
Newsgroups: sci.engr.lighting
Subject: Re: Germicidal lamps
Date: 8 May 1995 06:58:41 GMT
Organization: The University of British Columbia
Lines: 10
Message-ID: <3okff1$mg1@nntp.ucs.ubc.ca>
References: <2FA78432@coursmtp.nrc.ca>
NNTP-Posting-Host: physics.ubc.ca

I am looking for information on the use of HV UV lamps for 
large-scale industrial water purification applications. I understand
there are some waterworks (in Californai for example) which prefer this
method of purification over chlorine. Can anyone provide information o
the efficacy of the UV technology, and on whatever competing technologies
exist for this application? Does anyone know of any companies directly
involved in UV water purification? 
			Thanks,
					Mike



From samcomet@peg.apc.org Sun May 14 01:21:17 EDT 1995
Article: 1991 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!newsxfer.itd.umich.edu!agate!msunews!harbinger.cc.monash.edu.au!bunyip.cc.uq.oz.au!t11.dialup.peg.apc.org!user
From: samcomet@peg.apc.org (Sam Bienstock & Debby Michels)
Newsgroups: sci.engr.lighting
Subject: sonoluminescence
Date: Mon, 08 May 1995 16:47:17 +1000
Organization: Comet Lighting
Lines: 7
Message-ID: <samcomet-0805951647170001@t11.dialup.peg.apc.org>
NNTP-Posting-Host: t11.dialup.peg.apc.org
Keywords: light & sound

To all,
Having just read the 29 April, '95 ish of New Scientist article entitled
"Bubbles hotter than the sun", my interest in sonolumenescence increased
quantumfold. Anyone know where on the net more information could be
gleaned?
Thanks and cheers!
Sam


From samcomet@peg.apc.org Sun May 14 01:21:18 EDT 1995
Article: 1992 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!agate!msunews!harbinger.cc.monash.edu.au!bunyip.cc.uq.oz.au!t11.dialup.peg.apc.org!user
From: samcomet@peg.apc.org (Sam Bienstock & Debby Michels)
Newsgroups: sci.engr.lighting
Subject: Re: Lighting Design Software Reviews
Date: Mon, 08 May 1995 16:58:02 +1000
Organization: Comet Lighting
Lines: 37
Message-ID: <samcomet-0805951658020001@t11.dialup.peg.apc.org>
References: <3o7gpk$fu2@newsbf02.news.aol.com>
   <3of3fv$b03@newsbf02.news.aol.com>
NNTP-Posting-Host: t11.dialup.peg.apc.org

In article <3of3fv$b03@newsbf02.news.aol.com>, daveoesper@aol.com
(DaveOesper) wrote:

> Alas, for those of us who are dyed-in-the-wool Macintosh users, the only
> lighting design software available (that I am aware of) is Isopoint for
> the Macintosh, from Lighting Analysts, Inc.  It's biggest drawback is that
> you can't fence the calculation region (mean illumination, max, min,
> max/min ratio).  It always picks a square calculation region centered on
> the origin, and the size of the square is determined by the scale you set
> (e.g. 12 ft. per inch).  And, Lighting Analysts recently told me that they
> have no plans to upgrade Isopoint for the Mac nor do any more Macintosh
> software development.
> 
> This is indeed bad news.  I have to put up with PCs at work, and I'm
> always happy to come home to my Macintosh.  I don't want to buy a PC.  I
> just saw a demo of Windows 95 last week, and it is nice to know that Apple
> has been right all along (Windows 95 is more "Mac like" than Windows and
> OS/2).
> 
> Is there any other lighting software out there for the Apple Macintosh?  I
> do outdoor lighting design exclusively, so would be interested in any
> other outdoor lighting software for the Mac.
> 
> David Oesper
> Outdoor Lighting Associates, Inc.
> Ames, Iowa
Dave,
There is a program out there for theatre and film types that my be
applicable for you. It is a design program with symbols for drafting,
footcandle/lux readouts from various libraries of luminaires (user
adaptable), and a "show model" facility to see what a user designed
polygon shape will look like under the lights with various gels etc., etc.
The program is called MacLux by Claude Heintz of Oregon (address is in
Compuserve).
Hope this helps!
Cheers!
Sam


From Lighting@garnet.nist.gov Sun May 14 01:21:19 EDT 1995
Article: 1993 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!Germany.EU.net!EU.net!uunet!dove.nist.gov!gateway
From: lazo@bf2.bouw.tno.nl (Laurens Zonneveldt)
Newsgroups: sci.engr.lighting
Subject: Re: designers wanted to rate lighting conditions (2nd posting)
Date: 8 May 1995 03:36:34 -0400
Organization: NIST
Lines: 9
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <9505080722.AA11445@bf2.bouw.tno.nl>
References: <2FAD1CF2@coursmtp.nrc.ca>
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NNTP-Posting-Host: dove.nist.gov
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit

I would like to participate if possible.



Laurens Zonneveldt
TNO-TUE Centre for Building Research
P.O. Box 513                         |Phone +31 40 47 28 14
5600 MB Eindhoven                    |Fax   +31 40 43 85 95
The Netherlands                      |Email lazo@bouw.tno.nl


From Lighting@garnet.nist.gov Sun May 14 01:21:20 EDT 1995
Article: 1994 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!uunet!dove.nist.gov!gateway
From: dimitri@physics.ubc.ca (Dimitri Sirota)
Newsgroups: sci.engr.lighting
Subject: Re: germicidal lamp application
Date: 8 May 1995 04:24:26 -0400
Organization: NIST
Lines: 15
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <9505080811.AA16473@physics.ubc.ca>
References: <199505041637.MAA05520@thomas.ge.com>
Reply-To: Lighting@garnet.nist.gov
NNTP-Posting-Host: dove.nist.gov

To Terry McGowan,


Hi,
 I saw your posting in the sci.engr.lighting group and
wanted to know if you had any additional info  on the use of
high voltage ultra-violet lamps for industrial/municipal
waste water purification. Is this a viable technology
or are there problems with it? Do you know of any
companies using this technology for sewage/potable water
treatment? Are there any up and coming technologies that can
compete with this in replacing chlorine purification?
I would appreciate any info or leads you have on the subject.
Thanks.
			Mike Stazyk


From steven.m.collins@jpl.nasa.gov Sun May 14 01:21:21 EDT 1995
Article: 1995 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!elroy.jpl.nasa.gov!netline-fddi.jpl.nasa.gov!sec396-news.jpl.nasa.gov!NewsWatcher!user
From: steven.m.collins@jpl.nasa.gov (Steve Collins)
Newsgroups: sci.engr.lighting
Subject: UV, lexan and eyballs
Followup-To: sci.engr.lighting
Date: 8 May 1995 22:52:41 GMT
Organization: Galileo Orbiter Engineering Team
Lines: 24
Distribution: world
Message-ID: <steven.m.collins-080595152145@128.149.100.133>
NNTP-Posting-Host: 128.149.100.133

I noticed an opto-oddity the other day and this seems an appropriate
forum to ask for an explaination.

I was at a party where a fluorescent "black light" was used to
illumate one corner of the room. I noticed that whenever the light from
this tube came over the top of my (polycarbonate?) glasses, I had the odd
sensation that the light had suddenly become much brighter. Looking directy
at the bulb, with and without glasses, my overt perception of the color and
"brightness" of the bulb did not seem to change very much, but clearly
something was causing
visual response of some kind. I quickly guessed that my plastic lenses
(or perhaps a coating) were filtering out UV. I managed to convince myself
this was true by fooling around with a (fluorescing) white t-shirt. Here's
my real
question. Is there some part of your visual system hooked to your iris and
"your perception of glare" that doesn't excite your cones and rods and
make the source "look bright" in the conventional way?  Does this system
image? with some resolution?  Could it be used by sinister corporate
forces to paint subliminal messages on billboards? 

Just wondering...


					Steve Collins


From rlsearfoss@aol.com Sun May 14 01:21:22 EDT 1995
Article: 1996 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!news.alpha.net!uwm.edu!vixen.cso.uiuc.edu!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: rlsearfoss@aol.com (RLSearfoss)
Newsgroups: sci.engr.lighting
Subject: Re: History of Light
Date: 8 May 1995 22:32:59 -0400
Organization: America Online, Inc. (1-800-827-6364)
Lines: 6
Sender: root@newsbf02.news.aol.com
Message-ID: <3omk8r$2j9@newsbf02.news.aol.com>
References: <3obs40$703$1@mhadf.production.compuserve.com>
Reply-To: rlsearfoss@aol.com (RLSearfoss)
NNTP-Posting-Host: newsbf02.mail.aol.com

Get and read
Catching the Light
Arthur Zajonc
isbn 0-553-08985-4
A tremendous, fantastic, awesome book.  A MUST READ.  ....and...it is now
in paperback!!!


From urwfoster@cc.memphis.edu Sun May 14 01:21:23 EDT 1995
Article: 1997 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!emory!nntp.msstate.edu!nntp.memphis.edu!urwfoster
From: urwfoster@cc.memphis.edu
Newsgroups: sci.engr.lighting
Subject: Pennsylvania State's Building IlluProg.
Message-ID: <1995May8.213305.48742@msuvx1.memphis.edu>
Date: 8 May 95 21:33:05 -0500
Distribution: world
Organization: The University of Memphis
Lines: 4

I need some info on Penn's State's architectural engineering programme,
specifically about the building illumination department. Anyone
Peace, R. Wesley Foster



From nstn2905@fox.nstn.ca Sun May 14 01:21:24 EDT 1995
Article: 1998 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!uwvax!uchinews!vixen.cso.uiuc.edu!howland.reston.ans.net!swrinde!elroy.jpl.nasa.gov!decwrl!tribune.usask.ca!canopus.cc.umanitoba.ca!newsflash.concordia.ca!nstn.ns.ca!nstn.ns.ca!nntp-user
From: nstn2905@fox.nstn.ca (John MacDonald)
Newsgroups: sci.engr.lighting
Subject: Re: Neon Lighting
Date: 8 May 1995 18:14:24 -0300
Organization: NSTN Inc. ICS/Windows Dialup User
Lines: 17
Sender: news@nstn.ns.ca
Message-ID: <3om1jg$ks7@Owl.nstn.ca>
References: <3ncipb$9ie@www.awpi.com>
NNTP-Posting-Host: owl.nstn.ns.ca
X-Newsreader: WinVN 0.92.2

In article <3ncipb$9ie@www.awpi.com>, michalk@www.awpi.com (Brian K. Michalk) says:
>
>I'm trying to find some information on how to create your own
>neon lights.
>
>Does anyone know of a mailing list, or web site that would have such
>info?  How about a newsgroup better suited to this subject?
>
>
>-- 
>Brian Michalk   |No, the  |AWPI, home of *the* online magazine about Austin.
>michalk@awpi.com|other one|Providing systems integration and internet solutions.
>
You might want to check out the Feb.or March issue of WIRED magazine.  There is 
an article in there on the coming of blue lasers/LEDS.  The author 
speculates that this will spell the end of neon design.
 


From sjhart@voxel.com Sun May 14 01:21:25 EDT 1995
Article: 1999 of sci.engr.lighting
Newsgroups: sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!elroy.jpl.nasa.gov!usc!news.cerf.net!Sessions.voxel.com!usenet
From: sjhart@voxel.com (Stephen J Hart)
Subject: Re: Phone # for SID Meeting Please
Message-ID: <D8AJon.My3@voxel.com>
X-Posted-From: InterNews 1.0.5@stephenmac.voxel.com
Lines: 24
Sender: sjhart@homer.voxel.com
Organization: VOXEL
References:  <3olv6r$ot2@newsbf02.news.aol.com>
X-Authenticated: sjhart on POP host homer.voxel.com
Date: Tue, 9 May 1995 03:14:47 GMT

In article <3olv6r$ot2@newsbf02.news.aol.com>
latigoopti@aol.com (LatigoOpti) writes:

> I think I would like to attend the SID (society for information display)
> meeting in Orlando in Late May or Early June.  Anyone have a phone number
> for additional information?
> John McDonald

Society for Information Display
1526 Brookhollow Drive, Suite 82
Santa Ana, CA 92705-5421

(714) 545 1526 switchboard
(714) 545 1547 fax
socforinfodisplay@mcimail.com
http://www.display.org/sid


Stephen J Hart                      fax              +1 (714) 348-8665
Director of R&D                     e-mail            sjhart@voxel.com
                                    WWW URL         under construction

VOXEL, 26081 Merit Circle, #117,    The opinions and "facts" expressed
Laguna Hills, CA 92653-7017, USA    herein are not necessarily correct


From mshook@utkvx.utk.edu Sun May 14 01:21:26 EDT 1995
Article: 2000 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!darwin.sura.net!martha.utk.edu!usenet
From: mshook@utkvx.utk.edu (the Wondering Wanderer)
Newsgroups: sci.engr.lighting
Subject: RE: Intensity distribution for stage instruments
Date: Sun,  7 May 95 23:20:00 +400
Organization: University of Tennessee
Lines: 40
Message-ID: <3ok2l4$40d@martha.utk.edu>
References: <0jdXVmG00YUpM3QllQ@andrew.cmu.edu>
NNTP-Posting-Host: utkvx2.utk.edu

Spots have the ability to either have a very sharp fall off (a sharp edge) or a
very slow fall off (a soft edge). A Fresnel (a member of the floodlight family)
has a very soft edge only. For a text _Lighting the Stage: Art and Practice_ by
Willard F. Belman (ISBN 0-810-20040-6) has excellent sections dealing with the
technical side of stage lighting.

It would also help for you to go to a supplier and see first hand how the
various lights compare.

p.s. - rec.arts.theatre.stagecrafts follows all technical threads of this
nature.

- mike
===============================================================================
| the Wondering Wanderer ||  The opinions of the ||  If a game has no ending, |
|    Michael D. Shook    || management are their ||    need there be rules    |
|  MSHOOK@utkvx.utk.edu  ||     own problem!     ||  <<what about referees?>> |
|    MIKESHOOK@aol.com   ||                      ||        <coaches?!>        |
===============================================================================























From hilliwilli@aol.com Sun May 14 01:21:27 EDT 1995
Article: 2001 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!ukma!jobone!newsxfer.itd.umich.edu!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: hilliwilli@aol.com (Hilliwilli)
Newsgroups: sci.engr.lighting
Subject: Re: Do dimmible HIDs exist yet?
Date: 8 May 1995 14:48:37 -0400
Organization: America Online, Inc. (1-800-827-6364)
Lines: 8
Sender: root@newsbf02.news.aol.com
Message-ID: <3olp25$n9b@newsbf02.news.aol.com>
References: <3mj7d7$rnk@wrdis02.robins.af.mil>
Reply-To: hilliwilli@aol.com (Hilliwilli)
NNTP-Posting-Host: newsbf02.mail.aol.com

Peschel has moved to California - 427 Olive Street, Santa Barbara CA 93101
805/962-1635.

You may also want to check out bi-level HID systems - each manufacturer
makes their own system.  It is a little more cost-effective than a true
dimmable system.

good luck.


From Lighting@garnet.nist.gov Sun May 14 01:21:28 EDT 1995
Article: 2002 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!newsfeed.pitt.edu!uunet!dove.nist.gov!gateway
From: hardis@garnet.nist.gov (Jonathan E. Hardis)
Newsgroups: sci.engr.lighting
Subject: The *New & Improved* Lighting Mailing List
Date: 9 May 1995 12:21:28 -0400
Organization: NIST
Lines: 53
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <00990189.F06182C0.15648@garnet.nist.gov>
Reply-To: Lighting@garnet.nist.gov
NNTP-Posting-Host: dove.nist.gov
Content-Transfer-Encoding: 7BIT

Effective immediately, the Lighting mailing list is now a "Moderated"
mailing list.

This means that no longer can you, or anyone else, post messages that will
be automatically resent to everyone.  Now, the moderator will have to
review all messages first and manually approve their posting.  This will
cause a time delay before messages are publicized, but the idea is that it
greatly improve the signal to noise ratio of the mailing list.

Clay Belcher, who was instrumental in starting both this list and the
sci.engr.lighting newsgroup, has offered to act as the moderator.  Indeed,
I was so glad that someone offered to help, I hacked out a way to make
a moderated mailing list with this software (which until now didn't support
moderated mailing lists).

Clay will judge the suitability of each message for delivery to the mailing
list subscribers.  He'll say more about how he views his job, later.  In
general, the idea is this:

Messages suitable for posting to Lighting:

  1)  Technical information of general interest.
  2)  Technical questions in search of an answer.
  3)  Answers to the above, so everyone knows that the question has
      been answered.
  4)  Commentary on any of the above, provided the commentary contains
      additional information.

Message *not* suitable for posting to Lighting:

  1)  Administrivia messages, such as "subscribe" and "unsubscribe."
      (These should be sent to "Lighting-Request"!)
  2)  Unsolicited advertisements
  3)  Messages intended for a single recipient, such as:
      a)  Please send me a copy of that, too
      b)  Hi Charlie, how you been doin'?
      c)  I liked your answer to...
      d)  Will you be at the conference?
  4)  Commentary on postings without technical content (such as "Bull...").
  5)  Anything you wouldn't want your mother or lawyer to see.

If anyone posts an unsuitable message to Lighting, the moderator, at his
option, may send an explanation to the sender, or simply ignore it.

If anyone is dissatisfied about the job the moderator is doing, please send
private EMail to him first to try to resolve your complaint.
Failing that, you are welcome to send your complaints to me.

I hope this improves the readibility of the mailing list.  Remember, the
sci.engr.lighting newsgroup is still as anarchistic as it has always been.

  - Jonathan



From Lighting@garnet.nist.gov Sun May 14 01:21:29 EDT 1995
Article: 2003 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!uunet!dove.nist.gov!gateway
From: cbelcher@falcon.cc.ukans.edu (M. Clay Belcher)
Newsgroups: sci.engr.lighting
Subject: From the moderator
Date: 9 May 1995 12:37:58 -0400
Organization: NIST
Lines: 32
Sender: daemon@dove.nist.gov
Approved: news
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Reply-To: Lighting@garnet.nist.gov
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You've all read Jonathan Hardis' explanation of the switching of this
list to a moderated list.  I just wanted to add my comments about how I
plan to approach the job.

First of all, the intent is not to censor or in any way limit or stifle
debate.  We are merely trying to eliminate some of the nuisance messages
that have proliferated recently.

I check my e-mail at least once a day, and frequently twice.  Thus, the
delay imposed by "moderating" the list should be minimal.  If I plan to
be away from my computer for more than one day, we'll make arrangements
to have somebody cover for me.

If a message is sent to the list that is intended for an individual, and not
of general interest, I will probably simply forward it to the intended
recipient if I can do that easily.  This assumes that the personal message
was posted to the list naively or as an honest mistake.  If someone makes a
habit of doing it, I'll send that person a request to stop.

I suspect the traffic is light enough that I will be able to make some
sort of response to each rejected message, but I won't make any promises
at this point.  I reserve the right to simply let it die in my in box.

As Jonathan mentioned, feel free to contact me if a problem arises.

Clay Belcher, PhD, P.E.                 voice:  (913) 864-3434
Associate Professor                     fax:    (913) 864-5099
Architectural Engineering               e-mail: c-belcher@ukans.edu
University of Kansas





From rsuarez@siemens.ca Sun May 14 01:21:30 EDT 1995
Article: 2004 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!uunet!in1.uu.net!alterdial.uu.net!not-for-mail
From: rsuarez@siemens.ca
Newsgroups: sci.engr.lighting
Subject: Re: BALLASTS - 12vdc
Date: Mon, 08 May 95 16:55:34 PDT
Lines: 27
Message-ID: <3om102$36@alterdial.UU.NET>
References: <3oh4gs$mro@newsbf02.news.aol.com>
NNTP-Posting-Host: siemens.siemens.ca
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
X-Newsreader: NEWTNews & Chameleon -- TCP/IP for MS Windows from NetManage


In article <3oh4gs$mro@newsbf02.news.aol.com>, <ltgdes@aol.com> writes:
> Path: 
alterdial.uu.net!uunet!boulder!bloom-beacon.mit.edu!gatech!swrinde!pipex!howlan
d.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.c
om!not-for-mail
> From: ltgdes@aol.com (LTG DES)
> Newsgroups: sci.engr.lighting
> Subject: BALLASTS - 12vdc
> Date: 6 May 1995 20:33:32 -0400
> Organization: America Online, Inc. (1-800-827-6364)
> Lines: 4
> Sender: root@newsbf02.news.aol.com
> Message-ID: <3oh4gs$mro@newsbf02.news.aol.com>
> Reply-To: ltgdes@aol.com (LTG DES)
> NNTP-Posting-Host: newsbf02.mail.aol.com
> Xref: alterdial.uu.net sci.engr.lighting:2087
> 

> ltgdes@aol.com

Siemens Electric Ltd. has DC Lighting Ballast but it is 48vdc and is primarily 
used in Digital Switching Central Offices. It can eliminate high voltage surges 
and damages from transient spikes and logitudinal currents resulting from 
commercial AC power load balance switching and ligtning hits can be eliminated.

For further info you can call me at (905) 819-5894


From Lighting@garnet.nist.gov Sun May 14 01:21:31 EDT 1995
Article: 2005 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!uunet!dove.nist.gov!gateway
From: NRichardson@metcal.com (Richardson, Nina)
Newsgroups: sci.engr.lighting
Subject: Re[2]: germicidal lamp application
Date: 8 May 1995 13:26:13 -0400
Organization: NIST
Lines: 31
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <9504087999.AA799951069@metcal.metcal.com>
Reply-To: Lighting@garnet.nist.gov
NNTP-Posting-Host: dove.nist.gov


To Mike Stazyk,

There is a company in Canada that makes the type of equipment that you are
referring to.  They have been quite successful.  My contact there is:

Richard Pearcey
Project Engineering Manager
Trojan Technologies
3020 Gore Road
London, Ontario Canada N5V4T7
Telephone:  519-457-3400

Nina Richardson
nrichardson@eli.metcal.com

To Terry McGowan,


Hi,
 I saw your posting in the sci.engr.lighting group and
wanted to know if you had any additional info  on the use of
high voltage ultra-violet lamps for industrial/municipal
waste water purification. Is this a viable technology
or are there problems with it? Do you know of any
companies using this technology for sewage/potable water
treatment? Are there any up and coming technologies that can
compete with this in replacing chlorine purification?
I would appreciate any info or leads you have on the subject.
Thanks.
   Mike Stazyk


From lamptech@panix.com Sun May 14 01:21:32 EDT 1995
Article: 2006 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!panix!not-for-mail
From: lamptech@panix.com (Lamp Technology)
Newsgroups: sci.engr.lighting
Subject: Re: Help with broken light.???
Date: 9 May 1995 16:48:54 -0400
Organization: PANIX Public Access Internet and Unix, NYC
Lines: 44
Distribution: na
Message-ID: <3ookfm$idb@panix.com>
References: <1995May9.175628.25323@scic.intel.com>
NNTP-Posting-Host: panix.com
X-Newsreader: TIN [version 1.2 PL2]

Camron Rust (rust@scic.intel.com) wrote:
: Pardon me if this group is inapporpriate for this topic. If so,
: could someone point me to where I might find help.


: I have a Spa with an ozone generation system for water purification.
: This system uses an UV bulb (shaped much like standard flourescents (sp??)
: but much smaller). This bulb fails after about 2 years. Is this normal?
: The cost is about $100 to replace the bulb at the Spa dealer. I have
: yet to find a better source such a specialty lighting supplier.
: Does anyone know where I might find such bulbs?

: Also, how do these work---electricallyr? In looking in the box there
: are only 2 parts, the starter (what is a starter? a capacitor??) and
: another object that looks like some sort of transformer (balast??)
: with 2 leads. I observed the voltages with an Oscilloscope and the
: inputs are AC, I don't remember the voltage but it was present.

: I have been told that these parts can cause early failure of the
: bulb. Is this true or is it just a scam for the service company to
: make some money replacing a $2 starter for $35.

: Thanks,
: Camron

: -- 
: Camron Rust	rust@scic.intel.com	503-531-5040

Mr Rust:

If you can supply some additional information to our engineer Ralph 
regarding the bulb (ie: part number, manufacturer etc.) we may be able to 
supply the bulb or direct you to someone else who can. We are a specialty 
light bulb supplier and stock several manufacturer's bulbs including UV 
bulbs. Please call 1-800-533-7548 and ask for Ralph. I am sure that we 
can help you.

-------------------------------------------
 Janet Connolly      Lamp Technology, Inc.
 lamptech@panix.com    1-800-KEEP-LIT
  "We a have bulb for every socket"
  http://www.webscope.com/lamptech/
-------------------------------------------
Janet Connolly


From latigoopti@aol.com Sun May 14 01:21:33 EDT 1995
Article: 2007 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: latigoopti@aol.com (LatigoOpti)
Newsgroups: sci.engr.lighting
Subject: Phone # for SID Meeting Please
Date: 8 May 1995 16:33:31 -0400
Organization: America Online, Inc. (1-800-827-6364)
Lines: 4
Sender: root@newsbf02.news.aol.com
Message-ID: <3olv6r$ot2@newsbf02.news.aol.com>
Reply-To: latigoopti@aol.com (LatigoOpti)
NNTP-Posting-Host: newsbf02.mail.aol.com

I think I would like to attend the SID (society for information display)
meeting in Orlando in Late May or Early June.  Anyone have a phone number
for additional information?
John McDonald


From yeattslo@mindspring.com Sun May 14 01:21:34 EDT 1995
Article: 2008 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news.sprintlink.net!matlock.mindspring.com!yeattslo.mindspring.com!yeattslo
From: yeattslo@mindspring.com (Benjamin Lonske/Tabatha Yeatts)
Newsgroups: sci.engr.lighting
Subject: Re: Luminance/Illuminance measurements
Date: Wed, 10 May 1995 08:23:44 -0400
Organization: MindSpring Enterprises, Inc.
Lines: 34
Message-ID: <yeattslo.4.00514E6D@mindspring.com>
References: <yeattslo.3.00FA7F83@mindspring.com> <3odpj0$pro@kodak.rdcs.Kodak.COM>
NNTP-Posting-Host: yeattslo.mindspring.com
X-Newsreader: Trumpet for Windows [Version 1.0 Rev B]

In article <3odpj0$pro@kodak.rdcs.Kodak.COM> ekx400.jgriffit@kodako.kodak.com (John D. Griffith) writes:
>From: ekx400.jgriffit@kodako.kodak.com (John D. Griffith)
>Subject: Re: Luminance/Illuminance measurements
>Date: 5 May 1995 18:08:32 GMT

>The light hitting the page can be described by an illuminance measurement;
>the units might be lumens/m^2 (lux) or lumens/m^2 (foot-candles).  You set the 
>detector on the page and point it toward the source.  The little diffuser on 
>the detector is an attempt to integrate the power from multiple sources.

>The light hitting their eyes is a little trickier. If there were no ambient
>light I think that you could use the luminance of the page as a measure of
>visual stimulation...

OK.  Thanks to this and several other very useful responses, I now know 
that measuring the light *hitting the page* or the light *hitting the eye* are 
both illuminance measurements. If I wanted to measure the light *reflecting 
off the page* this would be an luminance measurement.  I now also know that 
if I want to use a silicon sensor to do the illuminance measurements that  I 
need to use a diffusing disc to provide cosine correction.

Luckily (for me, the engineer on the project) we are not concerned about the 
amount of  light that *hits the retina of the eye* or the amount of light 
that is *perceived by the person as reaching their eye* (brightness) - only 
the light that is incident on the plane the surface of the eye is on.  So, I 
plan to measure the light hitting the eye just by putting a small sensor 
behind their glasses directly over the eyelid for a second and taking 
the measurement.  

The trouble I am having now is finding a illuminance sensor (with a diffusing 
disk) small enough and thin enough to do this measurement.  Does anyone know 
of such a sensor that is made to work with a commercial light meter?

Thanks again!


From kikigirl@www.tecnet.org Sun May 14 01:21:35 EDT 1995
Article: 2009 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!bigboote.WPI.EDU!news3.near.net!tecnet.org!usenet
From: kikigirl@www.tecnet.org (Vicki C. Leighton)
Newsgroups: sci.engr.lighting
Subject: Telescope viewing and background lighting
Date: 10 May 1995 16:51:59 GMT
Organization: TECnet
Lines: 12
Message-ID: <3oqqvf$fbo@tecnet.org>
NNTP-Posting-Host: tecnet
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Content-Length: 493

I need information on the most appropriate commercial outdoor lighting
 for a shopping center parking lot which is adjacent to a telescope
viewing exhibit in an arts/science museum.  Or what is the best way
to minimize interfering effects on telescope viewing by commercial
outdoor lighting?

Please direct responses directly to
Vicki Leighton, GA Tech Economic Development Institute
vicki.leighton@edi.gatech.edu
(404-894-9564) (fax 894-0485)

Thanks in advance for any assistance.


From bushouse@chac.stsci.edu Sun May 14 01:21:36 EDT 1995
Article: 2010 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news.cac.psu.edu!news.tc.cornell.edu!newsserver.sdsc.edu!nic-nac.CSU.net!news.Cerritos.edu!news.Arizona.EDU!math.arizona.edu!noao!stsci!not-for-mail
From: bushouse@chac.stsci.edu (Howard A. Bushouse)
Newsgroups: sci.engr.lighting
Subject: Re: Luminance/Illuminance measurements
Date: 10 May 1995 12:26:11 -0400
Organization: Space Telescope Science Institute
Lines: 11
Message-ID: <3oqpf3$bpe@chac.stsci.edu>
References: <yeattslo.3.00FA7F83@mindspring.com> <3odpj0$pro@kodak.rdcs.Kodak.COM> <yeattslo.4.00514E6D@mindspring.com>
NNTP-Posting-Host: chac.stsci.edu


>The light hitting the page can be described by an illuminance measurement;
>the units might be lumens/m^2 (lux) or lumens/m^2 (foot-candles).

Can anyone tell me what physical measurement the lumen (or lux or foot-candle)
is based on or referenced against, i.e. is it some number of photons per
second of a given wavelength, or a given amount of light/photon energy
(e.g. ergs/sec, watts, etc.), or what?

Thanks,
Howard


From johnf@scd.hp.com Sun May 14 01:21:37 EDT 1995
Article: 2011 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news.sprintlink.net!simtel!col.hp.com!news.dtc.hp.com!hpscit.sc.hp.com!not-for-mail
From: johnf@scd.hp.com (John Paul Flowers)
Newsgroups: sci.engr.lighting
Subject: Re: DMX Standard req.
Date: 10 May 1995 17:49:52 GMT
Organization: Hewlett Packard
Lines: 76
Distribution: world
Message-ID: <3oquc0$b8q@hpscit.sc.hp.com>
References: <800111572.13@cs.york.ac.uk>
NNTP-Posting-Host: hpscrn.scd.hp.com
X-Newsreader: TIN [UNIX 1.3 310394BETA PL0]

David Lomas (davidl@p9news) wrote:
: Could anyone please send me or point me in the direction of some documentation 
: about the DMX control system. I need information ranging from voltage levels & 
: comms protocol to the actual format of messages.

USITT.
10 west 19th street, suite 5A
NY NY,
10011-4206

212-924-9088
FAX 924-9343

Publishes DMX-512 and it should cost something like $25.

OK,

I found my copy of the DMX-512 standard, here are some interesting facts.

5.0 DATA PROTOCOL

Data transitted shall be in asynchronous serial format. Dimmer level data
shall be transmitted sequentially, beginning with dimmer 1 and ending with the 
last implemented dimmer, up to a maximum of 512. Prior to the first level
transmitted, a RESET signal shall be transmitted followed by the NULL START
code. Valid dimmer levels shall be 0 to 255 decimal (00 to FF Hex)
representing dimmer control input levels of OFF to FULL in a linear relation-
ship. These numeric values shall not necessarily have any relationship to the 
actual dimmer output, which shall be determined within the dimmer itself.

5.0.1 RESET SIGNAL

The RESET signal shall consist of a BREAK lasting at least 88 usec (two frame
times). A BREAK shall be defined as a high-to-low transition followed by a 
low of at least 88 usec.  A BREAK f any duration exceeding 88 usec shall be
allowed. Multiple RESETS with no level information between shall be allowed.

5.0.2 NULL START CODE

The NULL START code shall be defined as a properly framed NULL character (all
zeros) following a RESET. The NULL START code is the data packet indentifier
which indentifies subsequent data as sequential dimmer level information.

6.0 DATA FORMAT
 
The data transmission format for each level transmited shall be as follows:

BIT POSITION		DESCRIPTION
     1                  Start Bit, Low or SPACE
 2 through 9		Dimmer level Data Bits, Least Significant Bit
			to Most Significant Bit Positive logic
   10, 11		Stop Bits, High or MARK
   Parity		Not Transmitted

7.0 DATA RATE

The data rate and associated timing shall be as follows:
Data Rate:		250 Kilobits per second
Bit Time:		4.0 microseconds
Frame Time:		44.0 microseconds
Maximum Update:		22.71 milliseconds
Rate for 512 dimmers	44.03 times per second
including RESET and START

7.1 Timing Diagram.

johnf> Sorry I can't send this to you well in ASCII, I can
scan it and make a GIF or jpg of it and uuencode if you need it.

-- 
**************************************************************************** 
*   John P. Flowers                   _\|/_______________________          *
*   johnf@scd.hp.com                   /|\ We can tell how                 *
*   HP Santa Clara Division                far gone you are!               * 
*   Precision Motion Control R&D                                           *
****************************************************************************


From solarchm@can.net Sun May 14 01:21:38 EDT 1995
Article: 2012 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!howland.reston.ans.net!news.sprintlink.net!can.net!news
From: Solarchem <solarchm@can.net>
Newsgroups: sci.engr.lighting
Subject: Re: Germicidal lamps
Date: 10 May 1995 19:15:39 GMT
Organization: Consolidated Access & Networks, Inc.
Lines: 14
Message-ID: <3or3cr$f2i@pine.can.net>
References: <2FA78432@coursmtp.nrc.ca> <3okff1$mg1@nntp.ucs.ubc.ca>
NNTP-Posting-Host: solarchm.can.net
Mime-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.1b3 (Windows; I; 16bit)
To: dimitri@physics.ubc.ca

 
Solarchem Environmental Systems is active in the field of industrial   
purification using Rayox UV-Oxidation systems. The Rayox systems use high   
power (3o KW) ,high intensity UV-C output lamps to photolize H2O2 to   
produce hydroxyl radicals (OH) which initiate the rapid oxidation of   
waterborne contaminants. The high intensity of UV-C is also effective in   
destroying virus and bacteria in water. 
 
 
For more information please reply.solarchm@can.net 
 
P.S. sorry for the duplication. 




From jcooley@world.std.com Sun May 14 01:21:39 EDT 1995
Article: 2013 of sci.engr.lighting
Newsgroups: sci.electronics.cad,sci.electronics.repair,sci.energy,sci.energy.hydrogen,sci.engr,sci.engr.advanced-tv,sci.engr.biomed,sci.engr.chem,sci.engr.civil,sci.engr.control,sci.engr.geomechanics,sci.engr.lighting,sci.engr.manufacturing,sci.engr.marine.hydrodynamics,sci.engr.mech,sci.engr.metallurgy,sci.engr.safety,sci.engr.semiconductors,sci.environment,sci.fractals,sci.geo.earthquakes
Path: bigblue.oit.unc.edu!concert!hearst.acc.Virginia.EDU!maui.cc.odu.edu!xanth.cs.odu.edu!lll-winken.llnl.gov!uwm.edu!vixen.cso.uiuc.edu!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!uunet!world!jcooley
From: jcooley@world.std.com (John Cooley)
Subject: Re: Important Newsletter!!!  ...Please read!!!
Message-ID: <D8Aqy5.DzC@world.std.com>
Organization: The E-mail Synopsys Users Group (ESNUG)
References: <3nslt5$62b@acmew.gatech.edu> <3o9b00$iom@aurora.engr.LaTech.edu> <3odlrq$5ad@news.htp.com>
Date: Tue, 9 May 1995 05:51:41 GMT
Lines: 37
Xref: bigblue.oit.unc.edu sci.electronics.cad:2738 sci.electronics.repair:9377 sci.energy:31810 sci.energy.hydrogen:2122 sci.engr:15091 sci.engr.advanced-tv:2758 sci.engr.biomed:4042 sci.engr.chem:7467 sci.engr.civil:8347 sci.engr.control:5360 sci.engr.geomechanics:77 sci.engr.lighting:2013 sci.engr.manufacturing:5250 sci.engr.marine.hydrodynamics:273 sci.engr.mech:14002 sci.engr.metallurgy:1464 sci.engr.safety:363 sci.engr.semiconductors:3060 sci.environment:58392 sci.fractals:6009 sci.geo.earthquakes:2334

Brian E. Harriss (gt0619a@prism.gatech.edu) wrote:
>
>
>
>
>
>
>
>
>

Tim Mirabile  <tim@mail.htp.com> wrote:
>
>Must not have been very important.
>

Actually, Tim, it was obviously one of those Zen newsletters -- you know,
sound of one hand clapping, saying "Toy Boat" three times fast, etc.

Once you "read" this blank post you'll be enlightened!   :^)

                           - John Cooley
                             Part Time EDA Consumer Advocate
                             Full Time ASIC, FPGA & EDA Design Consultant

===========================================================================
 Trapped trying to figure out a Synopsys bug?  Want to hear how 3349 other
 users dealt with it ?  Then join the E-Mail Synopsys Users Group (ESNUG)!
 
      !!!     "It's not a BUG,               jcooley@world.std.com
     /o o\  /  it's a FEATURE!"                 (508) 429-4357
    (  >  )
     \ - /     - John Cooley, EDA & ASIC Design Consultant in Synopsys,
     _] [_         Verilog, VHDL and numerous Design Methodologies.

     Holliston Poor Farm, P.O. Box 6222, Holliston, MA  01746-6222
   Legal Disclaimer: "As always, anything said here is only opinion."


From Lighting@garnet.nist.gov Sun May 14 01:21:39 EDT 1995
Article: 2014 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!uwvax!uchinews!vixen.cso.uiuc.edu!howland.reston.ans.net!news.sprintlink.net!uunet!in1.uu.net!dove.nist.gov!gateway
From: JCARP@ins.infonet.net (Jeff Carpenter)
Newsgroups: sci.engr.lighting
Subject: Re: Lighting design software - addresses please.
Date: 8 May 1995 18:41:26 -0400
Organization: NIST
Lines: 23
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <9505082241.AA22238@dove.nist.gov>
Reply-To: Lighting@garnet.nist.gov
NNTP-Posting-Host: dove.nist.gov
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"

>I would be grateful if anyone could supply the addresses / Fax numbers of
>the manufacturers of Genesys and Lumen Micro.
>
>Thanking you in advance
>
>Gavin Donaldson-Selby

Genesys is:

The Genlyte Group
100 Lighting Way
Secaucus, NJ 07096-1508

(201) 864-3000
(201) 392-3784 fax
*****************************************************************
* Tip of the day:   RAM DISK is NOT an installation procedure!  *
*****************************************************************
* Jeff Carpenter              email:  jcarp@ins.infonet.net     *
* Des Moines, IA                      jeffc54@aol.com           *
*                                     75231,1226@compuserve.com *
*****************************************************************



From XJBM64A@prodigy.com Sun May 14 01:21:40 EDT 1995
Article: 2015 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!solaris.cc.vt.edu!swiss.ans.net!prodigy.com!usenet
From: XJBM64A@prodigy.com (Albert Buralli)
Newsgroups: sci.engr.lighting
Subject: Re: DMX Standard req.
Date: 10 May 1995 18:47:24 GMT
Organization: Prodigy Services Company  1-800-PRODIGY
Lines: 12
Distribution: world
Message-ID: <3or1ns$13hu@usenetp1.news.prodigy.com>
References: <800111572.13@cs.york.ac.uk>
NNTP-Posting-Host: inugap1.news.prodigy.com
X-Newsreader: Version 1.2

The complete DMX512 standard can be obtained from the USITT in New York.
Sorry , I don't have the number with me.  If you don't have any luck post 
a return message with any specific questions and I'll be happy to look it 
up for you.

                                                               Lee 
Buralli
                                                               Lakeside 
Lighting
                                                               Orangevale,
Ca.



From bulloj@cortez.its.rpi.edu Sun May 14 01:21:42 EDT 1995
Article: 2016 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!news.kei.com!ub!newserve!rebecca!rpi!bulloj
From: bulloj@cortez.its.rpi.edu (John Bullough)
Newsgroups: sci.engr.lighting
Subject: Number of People/Number of Dollars for Lighting Training
Date: 10 May 1995 17:41:21 GMT
Organization: School of Architecture, Rensselaer Polytechnic Institute
Lines: 14
Message-ID: <3oqts1$phc@usenet.rpi.edu>
NNTP-Posting-Host: cortez.its.rpi.edu

Does anone out there have information (or pointers to information)
on how many people annually go through some kind of lighting training
courses, seminars or workshops?

I'm not talking about full-fledged academic programs but those shorter
courses such as those offered by manufacturers, utilities, and
societies like IESNA, CIE, NALMCO, etc. If no numbers are available
for number of people, are there figures for amounts of money spent on
these courses? Thanks for any help that anyone out there might have!
-- 
John Bullough, Research Associate       TEL: (518) 276-8717
Lighting Research Center                FAX: (518) 276-4835
School of Architecture                  EMAIL: bulloj@rpi.edu
Rensselaer Polytechnic Institute        WWW: http://www.rpi.edu/~bulloj


From Lighting@garnet.nist.gov Sun May 14 01:21:43 EDT 1995
Article: 2017 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!hearst.acc.Virginia.EDU!maui.cc.odu.edu!kuroshio.ccpo.odu.edu!xanth.cs.odu.edu!lll-winken.llnl.gov!uwm.edu!math.ohio-state.edu!howland.reston.ans.net!gatech!newsfeed.pitt.edu!uunet!in1.uu.net!dove.nist.gov!gateway
From: artlite@iaccess.za (Gavin Donaldson-Selby)
Newsgroups: sci.engr.lighting
Subject: Lighting design software - addresses please.
Date: 8 May 1995 16:32:58 -0400
Organization: NIST
Lines: 9
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <Pine.LNX.3.91.950430001139.121A-100000@artlite.iaccess.za>
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I would be grateful if anyone could supply the addresses / Fax numbers of
the manufacturers of Genesys and Lumen Micro.

Thanking you in advance

Gavin Donaldson-Selby




From rust@scic.intel.com Sun May 14 01:21:44 EDT 1995
Article: 2018 of sci.engr.lighting
Newsgroups: sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!uunet!inews.intel.com!itnews.sc.intel.com!chnews!news.co.intel.com!scic.intel.com!rust
From: rust@scic.intel.com (Camron Rust)
Subject: Help with broken light.???
Message-ID: <1995May9.175628.25323@scic.intel.com>
Originator: rust@rs002.scic.intel.com
Sender: news@scic.intel.com
Organization: Intel Corporation, Beaverton, OR
Distribution: na
Date: Tue, 9 May 1995 17:56:28 GMT
Lines: 27

Pardon me if this group is inapporpriate for this topic. If so,
could someone point me to where I might find help.


I have a Spa with an ozone generation system for water purification.
This system uses an UV bulb (shaped much like standard flourescents (sp??)
but much smaller). This bulb fails after about 2 years. Is this normal?
The cost is about $100 to replace the bulb at the Spa dealer. I have
yet to find a better source such a specialty lighting supplier.
Does anyone know where I might find such bulbs?

Also, how do these work---electricallyr? In looking in the box there
are only 2 parts, the starter (what is a starter? a capacitor??) and
another object that looks like some sort of transformer (balast??)
with 2 leads. I observed the voltages with an Oscilloscope and the
inputs are AC, I don't remember the voltage but it was present.

I have been told that these parts can cause early failure of the
bulb. Is this true or is it just a scam for the service company to
make some money replacing a $2 starter for $35.

Thanks,
Camron

-- 
Camron Rust	rust@scic.intel.com	503-531-5040



From wooley@kodak.com Sun May 14 01:21:45 EDT 1995
Article: 2019 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!news.kei.com!news.consultix.com!newsserver.pixel.kodak.com!newsserver.rdcs.Kodak.COM!usenet
From: Ben Wooley <wooley@kodak.com>
Newsgroups: sci.engr.lighting
Subject: Re: Luminance/Illuminance measurements
Date: 11 May 1995 11:55:48 GMT
Organization: Eastman Kodak Company
Lines: 18
Message-ID: <3osu04$48v@kodak.rdcs.Kodak.COM>
References: <yeattslo.3.00FA7F83@mindspring.com> <3odpj0$pro@kodak.rdcs.Kodak.COM> <yeattslo.4.00514E6D@mindspring.com> <3oqpf3$bpe@chac.stsci.edu>
NNTP-Posting-Host: 129.126.41.39
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X-URL: news:3oqpf3$bpe@chac.stsci.edu

bushouse@chac.stsci.edu (Howard A. Bushouse) wrote:
>Can anyone tell me what physical measurement the lumen (or lux or 
foot-candle)
>is based on or referenced against, i.e. is it some number of photons 
per
>second of a given wavelength, or a given amount of light/photon energy
>(e.g. ergs/sec, watts, etc.), or what?
>
>Thanks,
>Howard
 
A candela is 1/60 the luminous intensity of a 1-cm^2 blackbody radiator 
at the temperature of the freezing point of platinum (about 2045 K).  
Consistent with this, a lumen is the luminous flux of  monochromatic 
radiation at 555 nm whose radiant flux is equal to 1/683 W.  I hope this 
helps.




From johnsjon@ENGR.ORST.EDU Sun May 14 01:21:46 EDT 1995
Article: 2020 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!engr.orst.edu!johnsjon
From: johnsjon@ENGR.ORST.EDU (Jon Johnson)
Newsgroups: sci.engr.lighting
Subject: Re: Building Power
Date: 10 May 1995 06:48:31 GMT
Organization: College of Engineering, Oregon State University
Lines: 16
Distribution: world
Message-ID: <3opnjv$m52@engr.orst.edu>
References: <3o4c4c$dnd@ixnews3.ix.netcom.com>
NNTP-Posting-Host: flop.engr.orst.edu
X-Newsreader: TIN [version 1.2 PL2]

David Churchill (djch@ix.netcom.com) wrote:
: I am posting to this newsgroup because it is the closest to my problem.

: Does anyone know of a source of voltage-regulating transformers which
: can be placed in-line on the electrical service-entrance to a building
: to correct voltage deficiencies which occur in service from the local
: utility?  Such a transformer would be like an auto-transformer, and
: would have an automatic tap-changer.

Depending on your needs, I'd suggest a line-interactive uninterruptible
power supply with boost/trim capability.

You'd use this at the load, not in the electrical service; probably be
limited to around 2000VA max.

--Jon


From sideshow@netcom.com Sun May 14 01:21:47 EDT 1995
Article: 2021 of sci.engr.lighting
Newsgroups: sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!europa.chnt.gtegsc.com!library.ucla.edu!csulb.edu!csus.edu!netcom.com!sideshow
From: sideshow@netcom.com (Ray Soncini)
Subject: Re: Q: Colour Temp. of Australian skies.
Message-ID: <sideshowD8F5yq.Mus@netcom.com>
Organization: NETCOM On-line Communication Services (408 261-4700 guest)
X-Newsreader: TIN [version 1.2 PL1]
References: <3o297d$66r@info.curtin.edu.au>
Date: Thu, 11 May 1995 15:06:26 GMT
Lines: 21
Sender: sideshow@netcom11.netcom.com

Simon "fish" Crone (crones@puffin.curtin.edu.au) wrote:
: Hi,
: 	I'm after information about the colour temperature and/or colour spectrum 
: breakdown of Australian Skies ( Perth in particular ).  Does anyone know of
: any resources or research that I can dig up?

: Any feedback would be appreciated.

: Simon.

: ________________________________________________________________________________
: |                                                   |                          |
: |  Simon Crone. - Masters Student.                  |   He who dies with the   |
: |                                                   |    most toys - Wins!     |
: |  Email:crones@puffin.curtin.edu.au                |                          |
: |  http://puffin.curtin.edu.au/~crones/simon.html   |   ( Ancient coffee       |
: |  Mail:School of Architecture and Planning,        |     mug proverb .... )   |
: |       Curtin University of Technology,            |                          |
: |       GPO Box U1987, Perth, Western Australia     |   Phone: +619 351-7310   |
: |___________________________________________________|__________________________|



From Lighting@garnet.nist.gov Sun May 14 01:21:48 EDT 1995
Article: 2022 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!uunet!in1.uu.net!dove.nist.gov!gateway
From: ouellette@irc.lan.nrc.ca (Ouellette, Mike)
Newsgroups: sci.engr.lighting
Subject: Genesys & Lumen Micro
Date: 8 May 1995 17:55:33 -0400
Organization: NIST
Lines: 19
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <2FAE8EDD@coursmtp.nrc.ca>
Reply-To: Lighting@garnet.nist.gov
NNTP-Posting-Host: dove.nist.gov


To the person who inquired about sources for Genesys and Lumen Micro:

I purchased our copy of Genesys from the Lighting Concept Centre, 160 Pears
Ave., Suite 300, Toronto, Ont. Canada M5R 1T2, tel. 416-960-1400.  Price in
1992 was around $CAN500, but I think I heard that the price has come down
since.  The US supplier would be Lightolier (tel. 201-864-3000) in Secaucus
NJ.

Lumen Micro could be purchased from Lighting Technologies Inc, 2540 Frontier
Ave., Suite 107, Boulder, Colorado, USA 80301, tel. 303-449-5791.

Mike Ouellette
National Research Council Canada
Institute for Research in Construction
Bldg. M-24 Montreal Road
Ottawa, Ont. Canada K1A 0R6
tel. 613-993-9619 ; fax 613-954-3733 ; Bitnet OUELLETTE@IRC.LAN.NRC.CA
======================================================================


From hardis@garnet.nist.gov Sun May 14 01:21:49 EDT 1995
Article: 2023 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!uunet!dove.nist.gov!zeolite.nist.gov!user
From: hardis@garnet.nist.gov (Jonathan E. Hardis)
Newsgroups: sci.engr.lighting
Subject: Re: Phone # for SID Meeting Please
Date: Tue, 09 May 1995 17:53:41 -0500
Organization: National Institute of Standards & Technology
Lines: 8
Message-ID: <hardis-0905951753410001@zeolite.nist.gov>
References: <3olv6r$ot2@newsbf02.news.aol.com>
NNTP-Posting-Host: zeolite.nist.gov

In article <3olv6r$ot2@newsbf02.news.aol.com>, latigoopti@aol.com
(LatigoOpti) wrote:

> I think I would like to attend the SID (society for information display)
> meeting in Orlando in Late May or Early June.  Anyone have a phone number
> for additional information?

800-787-7477, or 703-413-3891  (Arlington, VA)


From rlsearfoss@aol.com Sun May 14 01:21:50 EDT 1995
Article: 2024 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: rlsearfoss@aol.com (RLSearfoss)
Newsgroups: sci.engr.lighting
Subject: Re: History of Light
Date: 9 May 1995 22:38:55 -0400
Organization: America Online, Inc. (1-800-827-6364)
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Reply-To: rlsearfoss@aol.com (RLSearfoss)
NNTP-Posting-Host: newsbf02.mail.aol.com

Book Catching the Light:  Nothing short of a masterpiece.  Zajonc is
professor of physics at Amherst.  


From ac554@FreeNet.Carleton.CA Sun May 14 01:21:51 EDT 1995
Article: 2025 of sci.engr.lighting
Newsgroups: sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!europa.chnt.gtegsc.com!news.sprintlink.net!howland.reston.ans.net!torn!nott!cunews!freenet.carleton.ca!FreeNet.Carleton.CA!ac554
From: ac554@FreeNet.Carleton.CA (David Whittaker)
Subject: A few questions about MH and HPS lamps
Message-ID: <D8CwB2.Guq@freenet.carleton.ca>
Sender: ac554@freenet2.carleton.ca (David Whittaker)
Reply-To: ac554@FreeNet.Carleton.CA (David Whittaker)
Organization: The National Capital FreeNet
Date: Wed, 10 May 1995 09:42:38 GMT
Lines: 18


I'd appreciate any knowledge that someone might care to
share with this non-engineer.
Are there any high pressure sodium lamps whose spectral
emission distribution approximates sunlight?
How would that compare with the SED of the metal halide
lamps that are normally employed in the retail trade?
What would be the relative efficiencies of MH, HPS and
fluorescent "daylight" bulbs?

This is for hobby purposes and I'm searching for reasonably
priced sources of "sunlight," ballasts and reflectors.

Thankyou,

Dave
--
 


From davidl@p9news Sun May 14 01:21:52 EDT 1995
Article: 2026 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!hearst.acc.Virginia.EDU!maui.cc.odu.edu!xanth.cs.odu.edu!lll-winken.llnl.gov!uwm.edu!math.ohio-state.edu!howland.reston.ans.net!news.sprintlink.net!pipex!sunsite.doc.ic.ac.uk!cs.york.ac.uk!davidl
From: davidl@p9news (David Lomas)
Newsgroups: sci.engr.lighting
Subject: DMX Standard req.
Message-ID: <800111572.13@cs.york.ac.uk>
Date: 10 May 1995 14:12:52 BST
Distribution: world
X-Newsreader: TIN [version 1.2 PL2]
Lines: 8

Could anyone please send me or point me in the direction of some documentation 
about the DMX control system. I need information ranging from voltage levels & 
comms protocol to the actual format of messages.

Cheers in advance,

Dave Lomas



From cy00@Lehigh.EDU Sun May 14 01:21:52 EDT 1995
Article: 2027 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!europa.chnt.gtegsc.com!news.sprintlink.net!howland.reston.ans.net!math.ohio-state.edu!uwm.edu!msunews!netnews.upenn.edu!Lehigh.EDU!Lehigh.EDU!not-for-mail
From: cy00@Lehigh.EDU
Newsgroups: sci.engr.lighting
Subject: Any info about Scandium ?
Date: 11 May 1995 09:47:33 -0400
Lines: 2
Message-ID: <3ot4hl$u0n@ns1.CC.Lehigh.EDU>
NNTP-Posting-Host: ns1.cc.lehigh.edu

Could someone tell me where scandium is used ?
Is there any particular industry area that consumes much of it ?


From solarchm@can.net Sun May 14 01:21:53 EDT 1995
Article: 2028 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!engr.orst.edu!reuter.cse.ogi.edu!uwm.edu!math.ohio-state.edu!howland.reston.ans.net!news.sprintlink.net!can.net!news
From: Solarchem <solarchm@can.net>
Newsgroups: sci.engr.lighting
Subject: Re: Germicidal lamps
Date: 10 May 1995 19:10:55 GMT
Organization: Consolidated Access & Networks, Inc.
Lines: 332
Message-ID: <3or33v$evu@pine.can.net>
References: <2FA78432@coursmtp.nrc.ca> <3okff1$mg1@nntp.ucs.ubc.ca>
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From solarchm@can.net Sun May 14 01:21:54 EDT 1995
Article: 2029 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!hearst.acc.Virginia.EDU!maui.cc.odu.edu!kuroshio.ccpo.odu.edu!xanth.cs.odu.edu!night.primate.wisc.edu!newsspool.doit.wisc.edu!uwm.edu!news.alpha.net!news.mathworks.com!gatech!howland.reston.ans.net!news.sprintlink.net!can.net!news
From: Solarchem <solarchm@can.net>
Newsgroups: sci.engr.lighting
Subject: Re: Germicidal lamps
Date: 10 May 1995 18:53:52 GMT
Organization: Consolidated Access & Networks, Inc.
Lines: 332
Message-ID: <3or240$evu@pine.can.net>
References: <2FA78432@coursmtp.nrc.ca> <3okff1$mg1@nntp.ucs.ubc.ca>
NNTP-Posting-Host: solarchm.can.net
Mime-Version: 1.0
Content-Type: zz-application/zz-winassoc-doc
Content-Transfer-Encoding: base64
X-Mailer: Mozilla 1.1b3 (Windows; I; 16bit)
To: dimitri@physics.ubc.ca

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From esuvy@csv.warwick.ac.uk Sun May 14 01:21:55 EDT 1995
Article: 2030 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!gatech!howland.reston.ans.net!pipex!warwick!not-for-mail
From: esuvy@csv.warwick.ac.uk (Peter Bishop)
Newsgroups: alt.security,rec.video.production,alt.sci.tech.indonesian,de.sci.electronics,de.sci.misc,fj.sci.misc,fj.sci.physics,sci.astro,sci.electronics,sci.electronics.cad,sci.electronics.repair,sci.engr,sci.engr.lighting,sci.engr.manufacturing,sci.engr.semiconductors,sci.image.processing,sci.materials,sci.med.vision,sci.misc,sci.op-research,sci.optics,sci.physics,tw.bbs.sci.electronics,tw.bbs.sci.physics
Subject: Infra Red Light Source (c.950nm)?
Followup-To: poster
Date: 12 May 1995 19:22:56 +0100
Organization: University of Warwick, Coventry, UK
Lines: 14
Message-ID: <3p0920$1oo@holly.csv.warwick.ac.uk>
NNTP-Posting-Host: holly-fddi.csv.warwick.ac.uk
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
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Xref: bigblue.oit.unc.edu alt.security:23494 rec.video.production:20651 alt.sci.tech.indonesian:1945 sci.astro:80164 sci.electronics:115868 sci.electronics.cad:2778 sci.electronics.repair:9511 sci.engr:15154 sci.engr.lighting:2030 sci.engr.manufacturing:5300 sci.engr.semiconductors:3085 sci.image.processing:14077 sci.materials:9921 sci.med.vision:4274 sci.misc:8210 sci.op-research:3361 sci.optics:11837 sci.physics:104978

Could anyone advise me on a suitable IR light source - that is invisible to
the naked eye.

This is for hidden camera with hidden light source surveillance.

Would like around the equivalent of a 100W light bulb i.e around 5W.
I think that LED's could be my best bet.

Cheers,

Peter.
-- 
Peter Bishop
[esuvy@csv.warwick.ac.uk]


From hardis@garnet.nist.gov Sun May 14 01:21:56 EDT 1995
Article: 2031 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!uunet!dove.nist.gov!zeolite.nist.gov!user
From: hardis@garnet.nist.gov (Jonathan E. Hardis)
Newsgroups: sci.engr.lighting
Subject: Re: Luminance/Illuminance measurements
Date: Fri, 12 May 1995 14:24:35 -0500
Organization: National Institute of Standards & Technology
Lines: 73
Message-ID: <hardis-1205951424350001@zeolite.nist.gov>
References: <yeattslo.3.00FA7F83@mindspring.com> <3odpj0$pro@kodak.rdcs.Kodak.COM> <yeattslo.4.00514E6D@mindspring.com> <3oqpf3$bpe@chac.stsci.edu>
NNTP-Posting-Host: zeolite.nist.gov

In article <3oqpf3$bpe@chac.stsci.edu>, bushouse@chac.stsci.edu (Howard A.
Bushouse) wrote:

> Can anyone tell me what physical measurement the lumen (or lux or foot-candle)
> is based on or referenced against, i.e. is it some number of photons per
> second of a given wavelength, or a given amount of light/photon energy
> (e.g. ergs/sec, watts, etc.), or what?

And a previous respondant said:

> A candela is 1/60 the luminous intensity of a 1-cm^2 blackbody radiator 
> at the temperature of the freezing point of platinum (about 2045 K).  
> Consistent with this, a lumen is the luminous flux of  monochromatic 
> radiation at 555 nm whose radiant flux is equal to 1/683 W.

Well, this is one area in which I can answer with authority.  I refer you
to Applied Optics, 32 (16), 2936-2948 (1993), "National Institute of
Standards and Technology detector-based photometric scale."  (I wrote
it.)  There's an even more detailed paper (which I also wrote) that is
going through the review process now for J. Res. NIST. -- expect it out
around the end of the year.

The platinum-point black body served in the definition for the candela
(and other photometric units, such as the lumen and lux) from 1948-1979. 
The answer above is out-of-date.

Since 1979, the definition reads, "The candela is the luminous intensity,
in a given direction, of a source that emits monochromatic radiation of
frequency 540x10**12 hertz and that has a radiant intensity in that
direction of (1/683) watt per steradian."

There are a lot of subtiltiles that this definition leaves out, like
converting frequency to wavelength, and luminous intensity at other
wavelengths.  These are mentioned and referenced in the Applied Optics
paper.

Okay.  What you *really* asked is what physical measurement the lumen is
based on or referenced against.  Since 1979, the answer has been:  any
that a national measurement laboratory wants.  The definition relates
photometric units to radiometric units (watts of light, perhaps with
geometric factors), but the watt is not an SI base unit (no wordy
definition).

At NIST, there are various calibrations and deliverables that we offer,
involving lamps, detectors, etc, for US (and other) laboratories that want
to reference their lumen (etc.) to the national standards.  One way or
another, each method relates back to our High-Accuracy Cryogenic
Radiometer (never let a computer expert choose an acronym).  This is a
device for measuring optical power (watts) by comparing the power to
electrical watts.  Both light and electricity are used to heat a receiving
cavity to the same temperature.  It follows that this happens when the
applied powers are the same.

So, it ends up that the standard lumen is based on the standard watt,
which is based on the standard ohm and the standard volt (P=V**2/R).  The
standard ohm is based on the quantum Hall effect, and the standard volt is
based on the Josephson junction.  And so it goes.

(In case anyone is wondering, yes, we compare our candela and lumen to the
candela and lumen realized by other national laboratories around the
world.  While we have the freedom to choose our methods, there are a
continual stream of reality checks.)

I also sense in your question a more basic one:  what is a "lumen" in the
first place?  The lumen is the photometric analog to the watt.  If you
have light with a certain spectral density (watts of power per
wavelength), you integrate this function against a pre-defined weighting
function (the CIE "Visability" function) to compute the lumens of the
light.

I hope this helped.

  - Jonathan


From Peter.Keller@Eng@tm Sun May 14 01:21:57 EDT 1995
Article: 2032 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!news.alpha.net!uwm.edu!cs.utexas.edu!news.sprintlink.net!psgrain!news.tek.com!news.bv.tek.com!peterk.pen.tek.com!user
From: Peter.Keller@Eng@tm (Peter Keller)
Newsgroups: sci.engr.lighting
Subject: Re: Phone # for SID Meeting Please
Date: Fri, 12 May 1995 15:59:52 +0100
Organization: ETABU
Lines: 18
Message-ID: <Peter.Keller-1205951559520001@peterk.pen.tek.com>
References: <3olv6r$ot2@newsbf02.news.aol.com>
NNTP-Posting-Host: peterk.cse.tek.com

In article <3olv6r$ot2@newsbf02.news.aol.com>, latigoopti@aol.com
(LatigoOpti) wrote:

> I think I would like to attend the SID (society for information display)
> meeting in Orlando in Late May or Early June.  Anyone have a phone number
> for additional information?
> John McDonald

John,

Palisades Institute handles the SID conference registration and
arrangements.  I think the phone number is 800-787-7477 or
703-413-3891.  If that doesn't work, let me know and I will get
an address for you.  The conference runs from May 21-26 and is
well worth attending if you have an interest in displays.

Pete Keller
Tektronix


From greg@mynx.demon.co.uk Sun May 14 01:21:58 EDT 1995
Article: 2033 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!europa.chnt.gtegsc.com!news.sprintlink.net!demon!news.demon.co.uk!not-for-mail
From: greg@mynx.demon.co.uk (Greg Brown)
Newsgroups: sci.engr.lighting
Subject: Source for extruded cases for lighting?
Date: 13 May 1995 15:58:57 +0100
Organization: Demon Internet
Lines: 11
Sender: news@news.demon.co.uk
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NNTP-Posting-Host: newnews.demon.co.uk
X-Nntp-Posting-Host: mynx.demon.co.uk
X-Newsreader: Forte Free Agent v0.55

Does anyone know of suppliers of the extruded metal cases used in
intelligent lighting fixtures?  I find it hard to believe that they
are all custom manufactured because they all look alike, especially in
the lower end systems.

Any help would be very much appreciated.
Thanks.

Greg
(More imaginative sig under construction)



From hgbii@aol.com Sun May 14 13:54:18 EDT 1995
Article: 2034 of sci.engr.lighting
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From: hgbii@aol.com (HGBII)
Newsgroups: sci.engr.lighting
Subject: Re: Source for extruded cases for lighting?
Date: 13 May 1995 14:17:29 -0400
Organization: America Online, Inc. (1-800-827-6364)
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Call Rick Edwards at EUA Nova Company in Smithfield, RI at (401)232-2300. 
He is the principal lighting designer for our company.  He has designed
several lines of fixtures using extrusions for us.


From katti@pcuf.fi Sun May 14 13:54:19 EDT 1995
Article: 2035 of sci.engr.lighting
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From: katti@pcuf.fi (Harri Ronkko)
Newsgroups: sci.engr.lighting
Subject: Jands Hog
Date: 13 May 1995 20:03:05 GMT
Organization: PC-k{ytt{j{t ry - The PC Users of Finland
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NNTP-Posting-Host: pcuf.fi


Hello All....
 
 I'm just wondering that is here anybody who has test or used Jands Hog
lightingboard. We are just purchasing new lightingboard and this one choice.
We need board which can controll movinglights.
 I need more information about this device.. Our sales department haven't
get information yet and it can take a long time.. So if someone have a
good information and specifications according this product. Maybe he can
send it to me via E-Mail..
 
 (My english is not so good but maybe you can understand what I mean)
 
 - Harri


From llile01@mail.coin.missouri.edu Sun May 14 13:54:20 EDT 1995
Article: 2036 of sci.engr.lighting
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From: llile01@mail.coin.missouri.edu (Lawrence O. Lile)
Newsgroups: sci.engr.lighting
Subject: EEG and RFI/EMF
Date: 13 May 1995 02:48:52 -0400
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I am designing an EEG suite for a neurologist at a hospital.  He is
very concerned about interference from fluorescent lights, VDTs, etc.
which can ruin a sensitive EEG test.  He recommends shielding
the entire room with copper mesh.  Has anyone done lighting design
for a similar EMF sensitive application?  What kind of lights did you
use?  What shielding materials work well?

Lawrence Lile, P.E.
Electrical Engineer
llile01@bigcat.missouri.edu




From janecek@tezcat.com Sun May 14 13:54:21 EDT 1995
Article: 2037 of sci.engr.lighting
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From: janecek@tezcat.com (Jim Janecek)
Newsgroups: sci.engr.lighting
Subject: Re: BALLASTS - 12vdc
Date: Thu, 11 May 1995 19:56:41 -0600
Organization: Personal Effects inc.
Lines: 21
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In article <3oh4gs$mro@newsbf02.news.aol.com>, ltgdes@aol.com (LTG DES) wrote:

> Would anyone out there know of a source(s) for 12V DC ballasts..
> Particularly for compact fluor?
> 
> ltgdes@aol.com


Call or write:
JKL Components Corp.
13343 Paxton Street
Pacoima, CA 91331
818-896-0019
fax 897-3056

They have TINY flourescent lamps AND TINY solid-state Ballasts that run on
12vdc.

-- 
Jim Janecek
Personal Effects Inc.


From jcarp@netins.net Sun May 28 17:01:52 EDT 1995
Article: 2101 of sci.engr.lighting
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From: jcarp@netins.net (Jeff Carpenter)
Newsgroups: sci.engr.lighting
Subject: Re: 'PL Type' fluorescent replacement lamps
Date: Sat, 20 May 1995 19:02:09 GMT
Organization: Electrical Engineer: Des Moines, IA
Lines: 29
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jim8541@aol.com (JIM8541) wrote:

>Hi,
>     I looking for info or performance data on type PL fluorescent
>replacement lamps. These would be the edison base type.I hoping to use
>these in an outside soffit fixture, but am worried about the exposure to
>cold temp. effecting starting during the winter months.Also, any thoughts
>about why standard 130 v, rough service, vibration proof incandescent type
>lamps would burn out after approx. 6 months use at 6 hrs. a day. I think
>the bulbs I've been using have a 2000 hr. rating. These bulbs are also in
>soffit type fixtures.There are 14 fixtures and every 6 months I
>replacement at least half. I have checked for water contacting the lamp
>and have monitored the incoming voltage with a recording volt meter and
>can't really say that these 2 are factors or causes. Any help would be
>greatly appreciated. Thanks

There is a new 32W PL-T lamp available by one of the manufacturers
that has a good lumen output of 0 degrees.  Otherwise, it is a bad
idea.  Sure, the lamp will start (that's how they get away with saying
0 degree starting temp) but the lumen output is proportional to
temperature.  THAT is the curve you need to look at.
*****************************************************************
* Tip of the day:   RAM DISK is NOT an installation procedure!  *
*****************************************************************
* Jeff Carpenter              email:  jcarp@ins.infonet.net     *
* Des Moines, IA                      jeffc54@aol.com           *
*                                     75231,1226@compuserve.com *
*****************************************************************



From znelson@epix.net Sun May 28 17:01:53 EDT 1995
Article: 2103 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.sprintlink.net!grape.epix.net!usenet
From: Zach Nelson <znelson@epix.net>
Newsgroups: sci.engr.lighting
Subject: Has anyone heard about the new VL 7 series?
Date: 22 May 1995 23:34:53 GMT
Organization: Imaginative Entertainment
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If so, drop me some mail.





Thanks,

Zach Nelson
Imaginative Entertainment

http://www.xmission.com/~gastown/imaginative
znelson@epix.net



From rdwill@igate1.hac.com Sun May 28 17:01:54 EDT 1995
Article: 2104 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news.cac.psu.edu!news.tc.cornell.edu!newsserver.sdsc.edu!news.cerf.net!hacgate2.hac.com!hacgate2!rdwill
From: rdwill@igate1.hac.com (David Williams)
Newsgroups: sci.engr.lighting
Subject: Re: help:  reducing filters' interreflections
Followup-To: sci.engr.lighting
Date: Mon, 22 May 95 23:14:09 GMT
Organization: Hughes Aircraft Company
Lines: 37
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X-Newsreader: VersaTerm Link v1.1

In Article <sfoo-190595020625@132.236.155.79>, sfoo@graphics.cornell.edu
(Choong) wrote:
>Can anyone advise me on how to reduce/eliminate interreflections between
>interference filters and ND filters (reflective) when used with
>a camera?
>
>I am using narrow band interference filters and ND filters(reflective)
>infront of a CCD camera and they are causing lots of overlapped secondary/
>tertiary... images from the interreflections.
>
>Any advice/help is much appreciated.  Thanks.
>
>-Sing
>sfoo@graphics.cornell.edu

The ND filters are probably metal (inconel) deposited onto glass, so they
shouldn't be very sensitive to angle.  I would put the ND filter in front
and tilt it until the ghost image was out of the field of view.  The
interference filter will shift wavelength if it is tilted, so you probably
don't want to tilt that one.

Another choice might be to use absorption filters like Wratten #96 ND's
(available at fine camera stores).  They are good in the visible (400-700
nm) and show increased transmission in the near infared but might still be
usable in the 700-900 nm range.

You might also be able to replace the video camera lenses' iris with a large
pinhole then eliminate the ND filters altogether.  The iris diameter needed
can be calculated beforehand knowing area of the opening is proportional to
its light transmittance.  If the hole is small enough, it becomes a pinhole
camera and the lens (which could also be causing ghost images) can be removed.

Good Luck

David Williams
Delco Electronics
rdwill@igate1.hac.com


From nstn2905@fox.nstn.ca Sun May 28 17:01:55 EDT 1995
Article: 2105 of sci.engr.lighting
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From: nstn2905@fox.nstn.ca (John MacDonald)
Newsgroups: sci.engr.lighting
Subject: Re: Questions about Laser Diodes
Date: 23 May 1995 14:06:39 -0300
Organization: NSTN Inc. ICS/Windows Dialup User
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X-Newsreader: WinVN 0.92.2

In article <801148666.3@cs.york.ac.uk>, me-b@minster.york.ac.uk (Max Edwards (4Y0)) says:
>
>Hi, can anybody tell me about the suitability of using low-cost low-power
>(e.g. 5mW) laser diodes in club-lighting effects.  Obviously they cannot be
>expected to cut through very much smoke, but I am thinking about using one
>to generate lissajous figures and spirograph patterns, projected onto a
>screen.  What sort of distances can I expect to cover with these devices,
>assuming a fair amount of smoke?  Are longer wavelengths (i.e. redder
>in colour) better in smoke?
>
Max, Hewlett Packard make some high intensity LEDs.  I believe that they
are about 15 candela.  A couple years ago they were advertising them
by providing a small pocket flashlight made from a single diode.  I don't
know if that will serve your purpose but it is worth looking at.
 

***********************************************
... and crawling on the planet's face
	some insects called the human race...
... lost in time ... lost in space
... and meaning
***********************************************


From cuttlc@rpi.edu Sun May 28 17:01:56 EDT 1995
Article: 2106 of sci.engr.lighting
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From: cuttlc@rpi.edu (Christopher Cuttle)
Newsgroups: sci.engr.lighting
Subject: Re: LED technology
Date: 22 May 1995 09:16:00 -0400
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On the topic of red, green or blue exit signs, the International
Standards Organization designates red to be the warning color for
danger, and green to be the color of safety.  The tendency to
follow red lights in an emergency is an exclusively North
American response: the rest of the world goes for green.

It may be added that for ISO signs, "EXIT" is giving way to
pictograms to avoid language difference problems, and two distinct
types of signs are used.  For low-adaptation locations, such as
auditoria, the characters are green on a black background, and
otherwise they are white on a green background.  Either way, the
intention is that where smoke reduces the visibility of the
characters, a "green blob" effect will prevail.

Kit Cuttle
Lighting Research Center
Renssealaer Polytechnic Institute
Troy, New York
cuttlc@rpi.edu



From me-b@minster.york.ac.uk Sun May 28 17:01:57 EDT 1995
Article: 2107 of sci.engr.lighting
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From: me-b@minster.york.ac.uk (Max Edwards (4Y0))
Newsgroups: sci.engr.lighting
Subject: Questions about Laser Diodes
Message-ID: <801148666.3@cs.york.ac.uk>
Date: 22 May 1995 14:17:46 BST
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Summary: 
Keywords: laser,smoke
Lines: 13

Hi, can anybody tell me about the suitability of using low-cost low-power
(e.g. 5mW) laser diodes in club-lighting effects.  Obviously they cannot be
expected to cut through very much smoke, but I am thinking about using one
to generate lissajous figures and spirograph patterns, projected onto a
screen.  What sort of distances can I expect to cover with these devices,
assuming a fair amount of smoke?  Are longer wavelengths (i.e. redder
in colour) better in smoke?

Thanks,
Max.
---
Max Edwards, Department of Computer Science, University of York
e-mail: me-b@minster.cs.york.ac.uk


From mel@hila.hut.fi Sun May 28 17:01:58 EDT 1995
Article: 2108 of sci.engr.lighting
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From: mel@hila.hut.fi (Marjukka Eloholma)
Newsgroups: sci.engr.lighting
Subject: daylight glare
Date: 24 May 1995 08:00:43 -0400
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We are planning to do studies on the effects of daylight on glare
conditions in office rooms. The idea is to gather data on daylight glare
conditions in typical office work conditions by luminance measurements and
by subjective assessments and glare control by subjects.

I would like to hear of studies on the effects of daylight  on glare in
indoor lighting. Comments on the methods to collect data on glare
conditions  caused by direct and reflected sunlight and diffuse sky are
appreciated.

The Daylight Glare Index (derived from Cornell large source glare formula)
considers glare from the sky, not direct sunlight. Does anyone know of
other methods to evaluate glare caused by daylight than the DGI ?

In some studies on daylight glare the subjects have been seated facing the
window while staring out of the window and assessing the discomfort. I
would like to hear comments on the applicability of these results into more
typical office work conditions (windows on the side wall, people performing
visual tasks).

Any good references on the subject (daylight glare, subjective assessments
of glare caused by windows etc.) are wellcome.

Marjukka Eloholma

Illuminating Engineering Laboratory
Helsinki University of Technology
FINLAND

e-mail : mel@hila.hut.fi





From JCARP@netins.net Sun May 28 17:01:58 EDT 1995
Article: 2109 of sci.engr.lighting
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From: JCARP@netins.net (Jeff Carpenter)
Newsgroups: sci.engr.lighting
Subject: Re: Office lighting
Date: 23 May 1995 19:06:31 -0400
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>I received a call from someone yesterday who is working with the
>lighting in a single-story office building.  The business is
>illuminated with deep cell parabolics or possibly even egg-crate
>louvers.  Recently, to cut down on solar gains, the company
>applied a heavy tint to the windows.  Now, from the exterior, the
>luminance of the luminaires is so low that the combination of
>this and the tint make the office appear closed during the day.
>My initial reaction was to tell her to add some luminance to the
>space: wall sconces with a high luminance or possibly even a neon
>OPEN sign, but something to allow a passer by to see that the
>office is open.  This is not the first instance I've heard of
>this type of problem.  I heard of a supermarket that added
>specular reflectors to strip fixtures and created the same
>"Closed Illusion".  They ended up cutting slits in the specular
>reflectors so that the bare lamps were visible from the exterior
>(and it worked).  There are probably more window film
>manufacturers out there than there are reflector manufacturers.
>Is this becoming a common problem, or are these just isolated
>incidents?  Have any of you successfully solved these same type
>problems?
>
>Thanks,
>
>Gregg Mackell
>(mackell@wapa.gov)

I don't have a very high opinion of specular reflectors and I wouldn't mess
to much with the inside light levels in this case if they are happy with it.
On option off the top of my head would be to wall-wash the glass window from
the inside.  I don't know what kind of results you would get but any local
manufacturer's rep that wants to make a sale should be willing to do a
mock-up for you.  The idea would be to light the inside of the glass to a
fairly high intensity, so the interior would seem brighter.  Again, I don't
know what kind of material your working with.  I would like at (depending on
the interior) a wall-wash compact fluorescent downlight or a linear
flourescent mounted from the ceiling.

Just some ideas.

*****************************************************************
* What's In A Name?  Find out what YOUR name means!             *
* http://www.netins.net/showcase/NameGame/                      *
*****************************************************************
* Jeff Carpenter              email:  jcarp@ins.infonet.net     *
* Des Moines, IA                      jeffc54@aol.com           *
*                                     75231,1226@compuserve.com *
*****************************************************************



From mshapiro@nosc.mil Sun May 28 17:01:59 EDT 1995
Article: 2110 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!gw2.att.com!pacbell.com!nntp-hub2.barrnet.net!news3.near.net!paperboy.wellfleet.com!news-feed-1.peachnet.edu!news.Gsu.EDU!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!uunet!dove.nist.gov!gateway
From: mshapiro@nosc.mil (Michael D Shapiro)
Newsgroups: sci.engr.lighting
Subject: Dimming fluorescent lamps
Date: 23 May 1995 19:16:22 -0400
Organization: NIST
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I'm trying to locate information on dimming fluorescent lamps.  I know
that dimmers for incandescent lamps won't work, but that some special
dimmers are made for this purpose.  What experience have you had with
these units -- good, indifferent, or bad?

========================================================================
Michael D. Shapiro, Ph.D.                      e-mail: mshapiro@nosc.mil
NCCOSC RDT&E Division (NRaD) Code 4123           San Diego CA 92152-7560
Voice: (619) 553-4080         FAX: (619) 553-4808          DSN: 553-4080




From daveoesper@aol.com Sun May 28 17:02:00 EDT 1995
Article: 2111 of sci.engr.lighting
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From: daveoesper@aol.com (DaveOesper)
Newsgroups: sci.engr.lighting
Subject: Re: Roadway Lighting - MH vs HPS
Date: 23 May 1995 19:33:51 -0400
Organization: America Online, Inc. (1-800-827-6364)
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Reply-To: daveoesper@aol.com (DaveOesper)
NNTP-Posting-Host: newsbf02.mail.aol.com

Clay,

Is it possible that with "scotopically enriched" light sources such as
metal halide one runs the risk of increased transient adaptation problems?
 And what about glare?  Is not glare from metal halide worse than HPS for
equivalent luminances?  Even though metal halide has good color rendering,
it often strikes me as being a bit "harsh".  Perhaps that is because often
when metal halide is used, the light levels are too high.  Then there are
the issues of shorter life, lower efficiency, higher cost, color-shift,
greater lumen-depreciation, etc. when compared with HPS.

We astronomers learned a long time ago that if you want to see well at
night, you use light sources that produce little or no light towards the
blue end of the spectrum (minimizing the effect on your rods, e.g.
bleaching of rhodopsin).  Thus, we prefer red LED flashlights.  Now, I'm
not advocating anything that red for roadway lighting, but it seems to me
that HPS and LPS are just fine.  It seems to me that the primary argument
for metal halide is its improved color rendering and "white" appearance. 
But I don't believe that "improved color rendering" is an important
consideration for roadway lighting, especially when you consider that all
motor vehicles come with their own white light sources, called headlights.

David Oesper
Outdoor Lighting Associates, Inc.
Ames, Iowa


From JCARP@netins.net Sun May 28 17:02:01 EDT 1995
Article: 2112 of sci.engr.lighting
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From: JCARP@netins.net (Jeff Carpenter)
Newsgroups: sci.engr.lighting
Subject: Re: Dimming fluorescent lamps
Date: 24 May 1995 14:41:53 -0400
Organization: NIST
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>I'm trying to locate information on dimming fluorescent lamps.  I know
>that dimmers for incandescent lamps won't work, but that some special
>dimmers are made for this purpose.  What experience have you had with
>these units -- good, indifferent, or bad?
>
>========================================================================
>Michael D. Shapiro, Ph.D.                      e-mail: mshapiro@nosc.mil
>NCCOSC RDT&E Division (NRaD) Code 4123           San Diego CA 92152-7560
>Voice: (619) 553-4080         FAX: (619) 553-4808          DSN: 553-4080

You need a special dimming ballast in the fixtures in addition to a special
dimmer.  The technology has gotten a lot better over the past 6 months to a
year.  The only thing that is keeping it from going mainstream on a regular
basis (at least from a designers perspective) is the $.  It is still a
pretty good adder to go to a dimming fluorescent fixture.

*****************************************************************
* Tip of the day:   RAM DISK is NOT an installation procedure!  *
*****************************************************************
* Jeff Carpenter              email:  jcarp@netins.net          *
* Des Moines, IA                      jeffc54@aol.com           *
*                                     75231,1226@compuserve.com *
*****************************************************************



From rasantos@csupomona.edu Sun May 28 17:02:02 EDT 1995
Article: 2113 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!elroy.jpl.nasa.gov!usc!nic-nac.CSU.net!clstac!rasantos
From: rasantos@csupomona.edu (RICHIE.RICH)
Newsgroups: sci.engr.lighting
Subject: need info on light bulbs!
Date: 24 May 95 11:58:33 PST
Organization: California State Polytechnic University, Pomona
Lines: 14
Message-ID: <1995May24.115833@clstac>
NNTP-Posting-Host: pinto.is.csupomona.edu

need information on materials of light bulbs.
ceramics/glass,etc
specs/properties/prices
new space-age materials.
e-bulb.
etc
etc.

i'm doing a report on light bulbs...so any information will help.
oh and if u want to relay any info please forward right away...
report is do tommorrow.

thanks for looking.
rich.


From MACKELL@wapa.GOV Sun May 28 17:02:03 EDT 1995
Article: 2114 of sci.engr.lighting
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From: MACKELL@wapa.GOV (Gregg Mackell)
Newsgroups: sci.engr.lighting
Subject: Office lighting
Date: 23 May 1995 12:32:05 -0400
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Hi Everyone,

I received a call from someone yesterday who is working with the
lighting in a single-story office building.  The business is
illuminated with deep cell parabolics or possibly even egg-crate
louvers.  Recently, to cut down on solar gains, the company
applied a heavy tint to the windows.  Now, from the exterior, the
luminance of the luminaires is so low that the combination of
this and the tint make the office appear closed during the day.
My initial reaction was to tell her to add some luminance to the
space: wall sconces with a high luminance or possibly even a neon
OPEN sign, but something to allow a passer by to see that the
office is open.  This is not the first instance I've heard of
this type of problem.  I heard of a supermarket that added
specular reflectors to strip fixtures and created the same
"Closed Illusion".  They ended up cutting slits in the specular
reflectors so that the bare lamps were visible from the exterior
(and it worked).  There are probably more window film
manufacturers out there than there are reflector manufacturers.
Is this becoming a common problem, or are these just isolated
incidents?  Have any of you successfully solved these same type
problems?

Thanks,

Gregg Mackell
(mackell@wapa.gov)



From nstn2905@fox.nstn.ca Sun May 28 17:02:04 EDT 1995
Article: 2115 of sci.engr.lighting
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From: nstn2905@fox.nstn.ca (John MacDonald)
Newsgroups: sci.engr.lighting
Subject: Re: Help with broken light.???
Date: 23 May 1995 14:00:27 -0300
Organization: NSTN Inc. ICS/Windows Dialup User
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In article <3ookfm$idb@panix.com>, lamptech@panix.com (Lamp Technology) says:
>
>Camron Rust (rust@scic.intel.com) wrote:
>: Pardon me if this group is inapporpriate for this topic. If so,
>: could someone point me to where I might find help.
>
>
>: I have a Spa with an ozone generation system for water purification.
>: This system uses an UV bulb (shaped much like standard flourescents (sp??)
>: but much smaller). This bulb fails after about 2 years. Is this normal?
>: The cost is about $100 to replace the bulb at the Spa dealer. I have
>: yet to find a better source such a specialty lighting supplier.
>: Does anyone know where I might find such bulbs?
>
>: Also, how do these work---electricallyr? In looking in the box there
>: are only 2 parts, the starter (what is a starter? a capacitor??) and
>: another object that looks like some sort of transformer (balast??)
>: with 2 leads. I observed the voltages with an Oscilloscope and the
>: inputs are AC, I don't remember the voltage but it was present.
>
>: I have been told that these parts can cause early failure of the
>: bulb. Is this true or is it just a scam for the service company to
>: make some money replacing a $2 starter for $35.

Camron,	The type of lamp that you are using requires two pieces of 
supplemental equipment.  These are a starter and a ballast as you 
mentioned.  The ballast provides the lamp with the proper voltage under
steady state condtions (i.e. once the lamp has ignited).  The ballast
also limits the current which is provided to the lamp.  You see as
the lamp ignites it changes from a high impedance load to a low impedance
load.  If the current is not limited, the ballast and the lamp will burn
out.  Thus if the ballast is letting too much current reach the lamp
it could be causing the lamp to burn out too early in it's life.  Note
that I am not saying that this is the problem, just that this is what your
"service" person was refering to.  As I said, the ballast provides the
proper voltage for steady state operation.  The lamp however, requires 
a much higher voltage to initially ignite.  The ballast is not capable
of providing this voltage.  This is where the starter comes into play.
The starter will provide a high voltage pulse until the lamp ignites and
then (usually) will disengage itself from the circuit once the lamp has
been ignited.  Hope this clears up any problems.

later...

***********************************************
... and crawling on the planet's face
	some insects called the human race...
... lost in time ... lost in space
... and meaning
***********************************************


From nstn2905@fox.nstn.ca Sun May 28 17:02:05 EDT 1995
Article: 2116 of sci.engr.lighting
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From: nstn2905@fox.nstn.ca (John MacDonald)
Newsgroups: sci.engr.lighting
Subject: Re: LED technology
Date: 23 May 1995 14:13:53 -0300
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In article <95May17.180914-0700_pdt.201+520@haven.uniserve.com>, jsani@ledalite.com (Jeffrey Sani) says:
>
>I am looking for any information regarding new LED technology.  I have
>recently become aware of the availability of blue LEDs.  I suppose this will
>have quite an impact on niche fields such as emergency lighting as there
>already exists red and green.  Any feedback will be much appreciated.
>
>Regards,
>Jeffrey P. Sani, B.Sc., MIES                          Ph:    604-888-6811
>Lighting Engineer, Product Applications     Fax:   604-888-2003
>Ledalite Architectural Products Inc.            email: jsani@ledalite.com
>
Jeffrey, there was a really well written article in the February issue
of WIRED magazine ( a delightful mag BTW).  It gave insight into the 
possible ramifications of the emergence of the blue LED on the lighting
industry.  Note: I think it was the February issue, if you can't locate it
in that issue, E-mail me and I'll look in my archive.


***********************************************
... and crawling on the planet's face
	some insects called the human race...
... lost in time ... lost in space
... and meaning
***********************************************


From iashdown@uniserve.com Sun May 28 17:02:06 EDT 1995
Article: 2117 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!uunet!dove.nist.gov!gateway
From: iashdown@uniserve.com (Ian Ashdown)
Newsgroups: sci.engr.lighting
Subject: Blue LEDs
Date: 24 May 1995 11:20:20 -0400
Organization: NIST
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A few days ago, Jeff Sani of Ledalite asked for information about blue
light-emitting diodes. The ensuing discussion gravitated towards exit
sign colors, leaving some of his questions unanswered.

While you may not see blue LEDs in commercial products, they do exist.
In December 1993, Nichia Chemical Company (Japan) announced the develop-
ment of a high-efficiency blue LED. At 3.6 lumens per watt, it is 100
times more efficient than previously available products. The peak wave-
length is 450 nm.

In June 1994, Eagle-Picher Industries (Miami, OK) and North Carolina
State University (Raleigh, NC) announced the development of a blue LED
with a peak wavelength of 489 nm and 1.7 lumens per watt.

To put these developments into perspective, lumen/watt ratings for
other state-of-the-art LED designs are 8.0 lm/W (red @ 650 nm),
20 lm/W (yellow @ 585 nm) and 18.0 lm/W (green @ 512 nm).

Those interested in further details (including references) should read:

Cook, J. W. Jr., and J. F. Schetzina. 1995. "Blue-Green Light-Emitting
Diodes Promise Full-Color Displays," Laser Focus World 31(3):101-104
(March).

On a related issue, there are electroluminescent organic emissive
films. Unlike light-emitting diodes that require expensive semicon-
ductor manufacturing techniques, these organic light-emitting devices
(OLEDs, first demonstrated in 1987) are cheap and easy to manufacture
using vapor deposition or spin coating techniques. Red, green, blue,
yellow and white OLEDs have been fabricated.

Again, those interested in further details should read:

Forrest, S. R., P. E. Burrows, and M. E. Thompson. 1995. "Organic
Emitters Promise a New Generation of Displays," Laser Focus World
31(2):99-107 (February).

While it is unlikely that these devices will replace conventional
fluorescent-tube technology in architectural lighting applications,
the same was said of fluorescent versus incandescent lamp technology
when the first fluorescent lamps were still laboratory curiosities.
Rather than saying "man will never fly," we should at least keep
abreast of the limits of lighting research as we do our everyday
work in lighting design.

So why did Jeff Sani post his questions to the 'net rather than ask
me? Well, I was on holidays ... ;^)

Ian Ashdown, P. Eng.
Research & Development Manager
Ledalite Architectural Products, Inc.
9087A - 198th Street
Langley, B.C.
Canada V3A 4P8
Ian Ashdown, P. Eng.                      THIS SPACE PURPOSEFULLY LEFT BLANK
Research & Development Manager
Ledalite Architectural Products Inc.
9087A - 198th Street
Langley, British Columbia
Canada V3A 4P8



From cbelcher@falcon.cc.ukans.edu Sun May 28 17:02:07 EDT 1995
Article: 2118 of sci.engr.lighting
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From: cbelcher@falcon.cc.ukans.edu (M. Clay Belcher)
Newsgroups: sci.engr.lighting
Subject: Roadway Lighting - MH vs HPS
Date: 23 May 1995 14:36:18 -0400
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I just wanted to check in again on the great roadway light source debate.  I
would like to hear from those involved in roadway lighting around the U.S. as
to what source you currently prefer and why - Metal Halide or High Pressure
Sodium?  What is actually being installed in your area?  What trend do you
see for the future?

Here in Kansas it's quite a mixed bag.  I am doing an investigation for the
Kansas Department of Transportation to survey what they currently have,
assess how it's performing, and make recommendations for the future.  My task
is limited to the Interstate system.  On the Interstates we have primarily
Metal Halide, high mast lighting, but there's a fair amount of HPS too, as
well as the occasional left-over Mercury Vapor. There is currently no
well-defined policy regarding new installations or future direction (hence
the reason for the study).

At this point we will probably be recommending that all future roadway
lighting be Metal Halide, and that existing HPS be retrofit to MH as ballasts
fail.  This is based on what we see as two emerging areas of consensus.  1)
"Scotopically enriched" light sources (i.e. more power in the blue/green part
of the spectrum) produce better visibility at low light levels.  Thus on an
equal lumen basis (since the lumen is defined by V lambda - photopic vision)
sources like Metal Halide will provide more visibility than High Pressure
Sodium.  2) People simply prefer whiter light as we found in another study
which I hope to present to IESNA in August (regarding a telephone survey of
streetlighting users in Kansas City).

Now of course the first argument could be overturned if the economics were so
greatly in favor of HPS that we could provide equal visibility (taking into
consideration the scotopic effect) with HPS at lower cost than with MH.  In
other words, (taking a purely fictitious example) if it took twice as many
lumens to produce a given level of visibility with HPS as with MH, but it
only cost 40% as much per lumen to install, generate, and maintain the HPS
system, then HPS would still be more economical.  This does not seem to be
the case, but even if it were, we would still have the second argument to
deal with.  How much is people's preference worth, anyway?  (A topic I've
advanced some thoughts on before, as some of you know).

Anyway, I just wanted to see what directions others might be headed on
this issue.

Thanks,

Clay Belcher, PhD, P.E.                 voice:  (913) 864-3434
Associate Professor                     fax:    (913) 864-5099
Architectural Engineering               e-mail: c-belcher@ukans.edu
University of Kansas





From cbelcher@falcon.cc.ukans.edu Sun May 28 17:02:07 EDT 1995
Article: 2119 of sci.engr.lighting
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From: cbelcher@falcon.cc.ukans.edu (M. Clay Belcher)
Newsgroups: sci.engr.lighting
Subject: Roadway Lighting - MH vs HPS
Date: 23 May 1995 14:28:58 -0400
Organization: NIST
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I just wanted to check in again on the great roadway light source debate.  I
would like to hear from those involved in roadway lighting around the U.S. as
to what source you currently prefer and why - Metal Halide or High Pressure
Sodium?  What is actually being installed in your area?  What trend do you
see for the future?

Here in Kansas it's quite a mixed bag.  I am doing an investigation for the
Kansas Department of Transportation to survey what they currently have,
assess how it's performing, and make recommendations for the future.  My task
is limited to the Interstate system.  On the Interstates we have primarily
Metal Halide, high mast lighting, but there's a fair amount of HPS too, as
well as the occasional left-over Mercury Vapor. There is currently no
well-defined policy regarding new installations or future direction (hence
the reason for the study).

At this point we will probably be recommending that all future roadway
lighting be Metal Halide, and that existing HPS be retrofit to MH as ballasts
fail.  This is based on what we see as two emerging areas of concensus.  1)
"Scotopically enriched" light sources (i.e. more power in the blue/green part
of the spectrum) produce better visibility at low light levels.  Thus on an
equal lumen basis (since the lumen is defined by V lambda - photopic vision)
sources like Metal Halide will provide more visibility than High Pressure
Sodium.  2) People simply prefer whiter light as we found in another study
which I hope to present to IESNA in August (regarding a telephone survey of
streetlighting users in Kansas City).

Now of course the first argument could be overturned if the economics were so
greatly in favor of HPS that we could provide equal visibility (taking into
consideration the scotopic effect) with HPS at lower cost than with MH.  In
other words, (taking a purely ficticious example) if it took twice as many
lumens to produce a given level of visibility with HPS as with MH, but it
only cost 40% as much per lumen to install, generate, and maintain the HPS
system, then HPS would still be more economical.  This does not seem to be
the case, but even if it were, we would still have the second argument to
deal with.  How much is people's preference worth, anyway?  (A topic I've
advanced some thoughts on before, as some of you know).

Anyway, I just wanted to see what directions others might be headed on
this issue.

Thanks,

Clay Belcher, PhD, P.E.                 voice:  (913) 864-3434
Associate Professor                     fax:    (913) 864-5099
Architectural Engineering               e-mail: c-belcher@ukans.edu
University of Kansas




From widevo Sun May 28 17:02:08 EDT 1995
Article: 2120 of sci.engr.lighting
Newsgroups: sci.engr.lighting
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From: widevo ()
Subject: Re: Help with broken light.???
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Date: Wed, 24 May 1995 15:32:26 GMT
Lines: 8

You sould be able to buy replacement lamps from any electrical
wholesaler.  Get the lamp number off the lamp and call all the
wolesalers in your area.  You might be forced to buy a case, but they
should be much cheaper then $100.00 each.  The ballast and starter may
also be purchased at your wholesaler.  I believe that the ballast and
starter are just standard fluorescent lamp products.  Nothing special
about them.



From whester@du.edu Sun May 28 17:02:09 EDT 1995
Article: 2121 of sci.engr.lighting
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From: whester@du.edu (WILLIAM R. HESTER)
Newsgroups: sci.engr.lighting
Subject: Re: LED technology
Date: 24 May 1995 11:53:14 -0600
Organization: University of Denver
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Interesting comments about EXIT signs...Red vs. Green.

Here in Denver Colorado, the building department has 
determined that Green Exit signs shall be used...
greater visability in smoke filled rooms.

This is in direct opposition to all the surrounding
counties which still require the signs to be Red.

Of course, none of the local electrical supply houses
stock the Green ones...special order only.




From skymed@halcyon.com Sun May 28 17:02:10 EDT 1995
Article: 2122 of sci.engr.lighting
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From: skymed@halcyon.com (BJ)
Newsgroups: sci.engr.lighting
Subject: Q: ARCING BETWEEN ELEC. CONTACTS & HOUSING
Date: Wed, 24 May 1995 23:31:33 +1100
Organization: Skyline Medical Consulting
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24 MAY 95, 23:20 PDT

I am interested in getting advice or comments on the following engineering
problem.  Two electrical contacts are housed in a stainless steel
housing.  In some cases the housing is grounded and the contacts are at
something like +/- 150 volts.  After laser welding the housing shut it is
back-filled with Nitrogen & Helium trace (for leak detection).  In field
service, arcing occurs between the contacts and the housing.

Is there anything thing to consider that would suggest a different
back-fill gas if we wanted to stay with the SS?

Is it possible that the back-fill gas is getting ionized before or during
the back-fill process?

If anyone has had this problem and solved it we would be interested in
hearing your approach.

R. K.


From parapsycho@aol.com Sun May 28 17:02:11 EDT 1995
Article: 2123 of sci.engr.lighting
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From: parapsycho@aol.com (Parapsycho)
Newsgroups: sci.engr.lighting
Subject: Re: Dimming fluorescent lamps
Date: 26 May 1995 00:18:00 -0400
Organization: America Online, Inc. (1-800-827-6364)
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Reply-To: parapsycho@aol.com (Parapsycho)
NNTP-Posting-Host: newsbf02.mail.aol.com

I have been doing research for myself on this very topic and am very new
to the internet.  I am thrilled to see this message posted.  The question
I had was concerning dimming fluorescents with Radio Shack's Plug and
Power incandescant dimming module.  If you're not familiar with this
product, basically it uses a control center which sends a RF signal
through the existing wiring in the room/house which gets terminated at the
transformer outside the building.  I contacted Luitron, Inc. (610)282-3800
and spoke with Jim.  To my knowledge one can use a basic incandescant
dimmer with the electronic dimming ballast, if I'm wrong please correct
me.  If not will the magnetic work with a standard dimmer?  I have used
the incandescant dimming module with my 4 foot fluorescant fixture as an
experiment and found if I simply connected an incandescant light in
parallel with the fluorescent (standard ballast), it dimmed down to a
certain point then shut off.  My point is I was able to keep the circuit
hot, or at least jump start the fluorescant in this way.  So what I must
know is in order to take the incandescant out of the loop, do I need a
magnetic or can I use the electronic dimming ballast?  Of course price is
also a consideration being that the magnetic runs about $60 and the
electronic about twice that.   Thank you for you time


From FParong Sun May 28 17:02:12 EDT 1995
Article: 2124 of sci.engr.lighting
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From: FParong
Newsgroups: sci.engr.lighting
Subject: Help: illumination specs
Date: 24 May 1995 20:02:08 GMT
Organization: NASA Goddard Space Flight Center -- Greenbelt, Maryland USA
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I'm looking for some feedback on some specifications on strobe lights. 
Their intended use will be to provide visual tracking of rockets upto 
a distance of 500 km.  I have the required environmental specs in mind,
but need help in specifying some illumination requirements.  The only
lighting specs I have available to reference is a 40 Joules/flash energy 
rate and a flash rate of 1 per second.  This corresponds to a 40 watt emission.
Do i then need to consider the efficacy (lumens/watt) of my lamp source? 
>From  this i would be able to determine the amount of light being emmitted 
but how can i find out if this amout of lumens will meet my visibility 
requirements of 500 km?  Is there some type of distance, visibility, and light 
intensity relationship?  I'm not very familiar with this topic so i would
appreciate any help and advice on how to persue this.


Thanks 

Fil Parong
    


From jfulton@actrix.gen.nz Sun May 28 17:02:13 EDT 1995
Article: 2125 of sci.engr.lighting
Newsgroups: sci.engr.lighting
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From: jfulton@actrix.gen.nz (John Fulton)
Subject: Re:Roadway Lighting - MH vs HPS
Message-ID: <D96Luo.8Ao@actrix.gen.nz>
Sender: news@actrix.gen.nz (News Administrator)
Organization: Actrix Networks -- NZ Internet Service Providers.
Date: Fri, 26 May 1995 10:44:48 GMT
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In message <3ptrcv$2rk@newsbf02.news.aol.com> - daveoesper@aol.com (DaveOesper)
 writes:
:>
:>We astronomers learned a long time ago that if you want to see well at
:>night, you use light sources that produce little or no light towards the
:>blue end of the spectrum (minimizing the effect on your rods, e.g.
:>bleaching of rhodopsin).  Thus, we prefer red LED flashlights.  Now, I'm
:>not advocating anything that red for roadway lighting, but it seems to me
:>that HPS and LPS are just fine. 

It seems to me that the high pressure sodium lamps are better for road 
lighting because the source of light is smaller, and is thus easier to design 
a luminaire that has good light distribution.

The low pressure sodium lamps although they preduce more light, it is much 
harder to get this light where it is needed, and keep low glare for good 
visual ability.  In times past these low pressure lamps were in common use, 
but once it was realised that better road lighting can be got from high 
pressure lamps, they became the lamp of choice for most road lightihg schemes 
in New Zealand.

Mercury vapour lamps are used in some urban areas where shopping areas 
require better colour rendering than is possible with sodium lamps.

Regards to you all


// John ER Fulton - Ngaio - Wellington - NEW ZEALAND
// Phone +64 4 479 2043  -  FAX  - +64 4 479 2043



From nstn2905@fox.nstn.ca Sun May 28 17:02:14 EDT 1995
Article: 2126 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!hookup!nstn.ns.ca!nstn.ns.ca!nntp-user
From: nstn2905@fox.nstn.ca (John MacDonald)
Newsgroups: sci.engr.lighting
Subject: Re: Blue LEDs
Date: 26 May 1995 10:34:08 -0300
Organization: NSTN Inc. ICS/Windows Dialup User
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In article <95May24.083453-0700_pdt.160+1853@haven.uniserve.com>, iashdown@uniserve.com (Ian Ashdown) says:
>
>A few days ago, Jeff Sani of Ledalite asked for information about blue
>light-emitting diodes. The ensuing discussion gravitated towards exit
>sign colors, leaving some of his questions unanswered.
> etc. etc.
>While it is unlikely that these devices will replace conventional
>fluorescent-tube technology in architectural lighting applications,
>the same was said of fluorescent versus incandescent lamp technology
>when the first fluorescent lamps were still laboratory curiosities.
>Rather than saying "man will never fly," we should at least keep
>abreast of the limits of lighting research as we do our everyday
>work in lighting design.

I would have to disagree with Ian assessment of the impact of blue LEDs
on the lighting industry.  Red LEDs have been making tremedous in-roads
into the automotive industry in such places as turning lights and 
brakelights.  As these types of applications increase we should see a 
marked increase in the candela output of such LED devices.  Furthermore, 
with the emergence of blue LEDs (blue+red+green makes white I believe) we 
will probably see a "white" LED within the next five years.  This source of
white light has the potential to be very small compared to traditional
incandescent and fluorescent lighting not to mention much more efficient.
As with red and green LEDs, once the big boys in compact disk and CD ROM 
players get into the game, not to mention the auto industry, I think we 
"see" realistic white LEDs emerging in the market place within 10-15
years.  Comments?


***********************************************
... and crawling on the planet's face
	some insects called the human race...
... lost in time ... lost in space
... and meaning
***********************************************


From nstn2905@fox.nstn.ca Sun May 28 17:02:15 EDT 1995
Article: 2127 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!hookup!nstn.ns.ca!nstn.ns.ca!nntp-user
From: nstn2905@fox.nstn.ca (John MacDonald)
Newsgroups: sci.engr.lighting
Subject: Re: EEG and RFI/EMF
Date: 26 May 1995 10:51:55 -0300
Organization: NSTN Inc. ICS/Windows Dialup User
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In article <Pine.SUN.3.91.950513014254.22363C-100000@bigcat>, llile01@mail.coin.missouri.edu (Lawrence O. Lile) says:
>
>I am designing an EEG suite for a neurologist at a hospital.  He is
>very concerned about interference from fluorescent lights, VDTs, etc.
>which can ruin a sensitive EEG test.  He recommends shielding
>the entire room with copper mesh.  Has anyone done lighting design
>for a similar EMF sensitive application?  What kind of lights did you
>use?  What shielding materials work well?
>
>Lawrence Lile, P.E.
>Electrical Engineer
>llile01@bigcat.missouri.edu
Lawrence,  I believe that what this neurologist is concerned with is not
fluorescent lamps but electronics fluorescent ballasts.  Magnetic 
fluorescent ballast operate at 60Hz, but the electronic version operate
at anywhere from 25kHz (first generation) to 50kHz (newer versions).  This
can cause two problems.  The first is that the ballast itself can emit
RFI which can interfere with other electronics.  The second is that the 
lamp is strobing UV at high frequency.  This has recently been investigated
with the new higher frequency ballast as the UV emmisions from the lamp
have been known to interfere with devices such as IR garage openers, etc.
If he is concerned about VDTs, I would assume that the EEG equipment that 
he is using may be susceptible to lamp UV emmisions as well (you need to
check into this - it may not be a concern if the frequency of the ballast
and the equipment do not match).  If this is a problem, though, then 
shielding with copper will not likely help (with the UV problem - it may
with the RFI problem).  If electronic ballasts are a problem try reverting
to magnetic ballast.  The only problem with them is that flicker can be 
noticeable due to the fact that they are only strobing at 120 Hz (2xoperating
frequency).  Hope this helped.

John MacDonald
NSTN2905@FOX.NSTN.CA  
***********************************************
... and crawling on the planet's face
	some insects called the human race...
... lost in time ... lost in space
... and meaning
***********************************************


From Tai_Voong@lbl.gov Sun May 28 17:02:16 EDT 1995
Article: 2128 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!news.iag.net!newsboy.utelfla.com!news.sprintlink.net!howland.reston.ans.net!swrinde!elroy.jpl.nasa.gov!lll-winken.llnl.gov!overload.lbl.gov!NewsWatcher!user
From: Tai_Voong@lbl.gov (Tai_Voong)
Newsgroups: sci.engr.lighting
Subject: CFL as the Shape of Incandescent
Followup-To: sci.engr.lighting
Date: Thu, 25 May 1995 15:11:18 -0700
Organization: lbl.gov
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Message-ID: <Tai_Voong-250595151118@128.3.12.174>
NNTP-Posting-Host: b90-tid5.lbl.gov

I'm looking to retrofit some incandescent lamps of historical fixtures.
Therefore, the CFL needs to look like an incandescent. If you know a
manufacture that have this particular product, please let me know. 
Thanks in advance,
Tai  

-- 
Remembered the Past, Living the Present & Dream the Future.


From Jennifer_M._Skolones@ccmail.bms.com Sun May 28 17:02:17 EDT 1995
Article: 2129 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!newsserver.jvnc.net!synapse.bms.com!news-admin
From: "Jennifer M. Skolones" <Jennifer_M._Skolones@ccmail.bms.com>
Newsgroups: sci.engr.lighting
Subject: Re: Blue LEDs
Date: 26 May 1995 13:58:27 GMT
Organization: Bristol-Myers Squibb Company
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NNTP-Posting-Host: 140.176.142.107

nstn2905@fox.nstn.ca (John MacDonald) wrote:

> Furthermore, 
> with the emergence of blue LEDs (blue+red+green makes white I believe) we 
> will probably see a "white" LED within the next five years.  This source of
> white light has the potential to be very small compared to traditional
> incandescent and fluorescent lighting not to mention much more efficient.
> As with red and green LEDs, once the big boys in compact disk and CD ROM 
> players get into the game, not to mention the auto industry, I think we 
> "see" realistic white LEDs emerging in the market place within 10-15
> years.  Comments?
> 

>From  the catalog of Ledtronics, of Torrance CA:

"Full spectrum 5mm integrated RGB LEDs offer a wide variety of color
combinations, including white, for indicators, displays, spectral
analysis, color synthesis and other applications."

Near as I can tell, the "white" LED is here now.




From pdecker@lds.loral.com Sun May 28 17:02:19 EDT 1995
Article: 2130 of sci.engr.lighting
Newsgroups: sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!elroy.jpl.nasa.gov!lll-winken.llnl.gov!enews.sgi.com!wdl1!lds081!cps231!pdecker
From: pdecker@lds.loral.com (Philip Decker)
Subject: Re: Roadway Lighting - MH vs HPS
Message-ID: <1995May26.161052.26932@lds.loral.com>
Sender: news@lds.loral.com
Reply-To: pdecker@lds.loral.com
Organization: LORAL Data Systems
References: <Pine.OSF.3.91.950523133109.24135C-100000@falcon.cc.ukans.edu>
Date: Fri, 26 May 1995 16:10:52 GMT
Lines: 8

I hope all of you involved in outdoor lighting are
supporting members of the International Dark-Sky
Association (IDA).  Otherwise, the day will come
when there are no urban residents who remember
seeing the stars.

PJD



From millen2@rpi.edu Sun May 28 17:02:20 EDT 1995
Article: 2131 of sci.engr.lighting
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From: millen2@rpi.edu (Naomi Johnson Miller)
Newsgroups: sci.engr.lighting
Subject: Re: Office lighting
Date: 25 May 1995 18:35:59 -0400
Organization: NIST
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In response to the question about making a building with window film
look "open", I would not suggest washing the inside of the glass
with light.  What makes an interior space look open is surface
luminance, and that means washing walls, ceilings, and vertical
surfaces with light.  Make sure the finishes are light in color,
then add some light to the surface through wallwashing, uplighting,
wall sconces, valances, pendants, etc. etc.  What won't work is
low-brightness downlights or recessed parabolics located so that
their light doesn't strike any vertical surfaces.

Washing the glass will not achieve surface brightness. Your watts
are better spent on the walls and ceiling.

Naomi Miller
Lighting Research Center


From millen2@rpi.edu Sun May 28 17:02:21 EDT 1995
Article: 2132 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!gw2.att.com!gw1.att.com!fnnews.fnal.gov!uwm.edu!news.alpha.net!news.mathworks.com!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!uunet!dove.nist.gov!gateway
From: millen2@rpi.edu (Naomi Johnson Miller)
Newsgroups: sci.engr.lighting
Subject: Re: Dimming fluorescent lamps
Date: 25 May 1995 18:58:47 -0400
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In response to Michael Shapiro's question on fluorescent dimming, I have
had the best success with Lutron's HiLume system.  It uses an electronic
dimming ballast that permits dimming down to 1% of full output.  For
conference rooms and auditoria, this is a wonderfully useful feature.  It
must be used with their own dimming controls, as far as I know.  There is
a special additional wire or two that must be run between the control and
the HiLume ballast, so you can't just retrofit an existing incandescent
dimming installation.

Lutron has come out with a bunch of new fluorescent dimming products.  They
can dim the standard length T8, T12, HO lamps, as well as some odd-ball
lengths, too.  They also have a system for a few of the compact fluorescent
lamps.  I believe they also have a dimming controller that will dim the
Advance and Motorola dimming ballasts, but these only go down as low as
5 or 10% light output, which is frequently not low enough for slide
presentations or theatrical productions or video presentations.

I have seen Prescolite's CF dimming, but have no personal experience with
it yet.

I have personal experience with fluorescent dimming using magnetic ballasts.
It's a minor nightmare unless installation of lamps and ballasts and
aging of lamps is done perfectly.  Also, you can't mix lamp lengths success-
fully.  Oh, and it's noisy and usually doesn't dim below 30% light output.
It's worth the extra bucks to go with electronic dimming ballasts.Ã

Lightolier has many new dimming products for compact and full-size fluorescent.
Has anyone had experience with those products?

Naomi Miller
Lighting Research Center


From greg@mynx.demon.co.uk Sun May 28 17:02:22 EDT 1995
Article: 2133 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.sprintlink.net!demon!news.demon.co.uk!not-for-mail
From: greg@mynx.demon.co.uk (Greg Brown)
Newsgroups: sci.engr.lighting
Subject: Sources for dichroic glass?
Date: 25 May 1995 14:48:03 +0100
Organization: Demon Internet News Service
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X-Newsreader: Forte Free Agent v0.55

Does anyone out there have any information on dichroic filters?

I am also looking for a supplier of dichroic glass, preferably in the
UK.

Any help would be greatly appreciated.


Greg
(More imaginative sig under construction)



From zarnott@aol.com Sun May 28 17:02:23 EDT 1995
Article: 2134 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: zarnott@aol.com (ZARNOTT)
Newsgroups: sci.engr.lighting
Subject: Re: WATT REDUCTION ON COOLING LOAD
Date: 26 May 1995 16:38:00 -0400
Organization: America Online, Inc. (1-800-827-6364)
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NNTP-Posting-Host: newsbf02.mail.aol.com

Hey Steve,

Thanks! - I believe that number you gave more than the explanation I gave
earlier.

Mike Z


From parapsycho@aol.com Sun May 28 17:02:23 EDT 1995
Article: 2135 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!taco.cc.ncsu.edu!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: parapsycho@aol.com (Parapsycho)
Newsgroups: sci.engr.lighting
Subject: neon
Date: 26 May 1995 00:39:55 -0400
Organization: America Online, Inc. (1-800-827-6364)
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NNTP-Posting-Host: newsbf02.mail.aol.com

I am looking for material concerning the art of making neon signs,
sculptures, etc.  I used to have an information packet which I paid for
many years back which talked about different methods used to create them
and also tools needed for setting up a shop.  This info packet was found
in Popular Science almost 9 years ago.  If anyone has any knowledge on
this info. packet or anything else which could be of use, please post it,
I would appreciate it very much.  Thank you.

Hello, my name is Mike Parker, and I am addicted to the Internet,  AND I
LIKE IT :)


From stevele@eskimo.com Sun May 28 17:02:24 EDT 1995
Article: 2136 of sci.engr.lighting
Newsgroups: sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!taco.cc.ncsu.edu!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!uunet!eskimo!stevele
From: stevele@eskimo.com (Steve Lewellen)
Subject: Re: WATT REDUCTION ON COOLING LOAD
X-Nntp-Posting-Host: eskimo.com
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Lines: 21

zarnott@aol.com (ZARNOTT) writes:

>It depends on your building and weather data, however, the maximum number
>I use is:
>1 Watt HVAC reduction for each 3.2 Watts of lighting energy reduction.
>You figure it out from there.
>Mike Z

I apologize in advance if I am off here since this is my 1st time 
viewing this group and post.  Trying to decipher the above response 
(didn't see orig post), however for every 3.2 watt reduction of lighting 
( I assume your refering to incandescent) you btuh reduction would be 10.92.
There is no corelation between the weather bin data and building that 
effect light watts.  One watt = 3.413 btuh.

To reduce the sensible heat load one ton on the HVAC for lighting 
purposes, a reduction of 3,516 watts would be required.

stevele@eskimo.com  (Steve Lewellen)




From hgbii@aol.com Sun May 28 17:02:25 EDT 1995
Article: 2137 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: hgbii@aol.com (HGBII)
Newsgroups: sci.engr.lighting
Subject: Re: Quickstart ballast for fluo tubes?
Date: 26 May 1995 22:13:26 -0400
Organization: America Online, Inc. (1-800-827-6364)
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NNTP-Posting-Host: newsbf02.mail.aol.com

Instant start ballasts use a jumper wire installed in the lamp socket to
short out the cathode and basically jump start the lamp.  This works very
well and does not significantly affect lamp life unless the fixtures are
switched on and off frequently.  Multi-lamp ballasts of this type are
wired in parallel, whereas rapid start multi-lamp ballasts are wired in
series.


From hgbii@aol.com Sun May 28 17:02:26 EDT 1995
Article: 2138 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: hgbii@aol.com (HGBII)
Newsgroups: sci.engr.lighting
Subject: Re: Electrodeless Lamps
Date: 26 May 1995 22:13:36 -0400
Organization: America Online, Inc. (1-800-827-6364)
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NNTP-Posting-Host: newsbf02.mail.aol.com

Try Philips Lighting....they have a 'Q' lamp that operates without
filaments.


From Vanier@irc.lan.nrc.ca Sun May 28 17:02:27 EDT 1995
Article: 2139 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!venus.sun.com!cs.utexas.edu!utnut!nott!nrcnet0.nrc.ca!ratilal
From: Vanier <Vanier@irc.lan.nrc.ca>
Newsgroups: sci.engr.lighting
Subject: (no subject)
Date: 25 May 1995 23:11:10 GMT
Organization: IRC/NRCC
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Mime-Version: 1.0
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Content-Transfer-Encoding: 7bit
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To: NEW!Electronic,Journal,-,ITcon
X-URL: news:sci.engr.lighting

                 *** FIRST  ANNOUNCEMENT ***
                  ***   CALL FOR PAPERS   ***

    ELECTRONIC JOURNAL OF INFORMATION TECHNOLOGIES IN CONSTRUCTION

A new peer-reviewed, aperiodic journal called the Electronic Journal
of Information Technologies in Construction will be available later
this year. Scheduled to begin publishing in August 1995, ITcon will
provide a new medium for researchers for the information technology
applications in the construction industry. 

With short lead times ITcon will assist the rapid diffusion of
research results. It is the first electronic journal for 
construction addressing specifically the domain of IT.

1. JOURNAL SCOPE

Papers will be published in the following areas:

* Construction process and enterprise modeling using IT as an 
  enabling technology,
* IT strategies within building organizations and groups,
* IT-based techniques for problem solving in construction,
* IT-supported communication across or within disciplines,
* Methods for concurrent engineering,
* Education and training in Information Technologies,
* Remote communication between programs and other computing 
  techniques,
* Standards for structuring and exchanging data within the building 
  lifecyle, and
* Technologies and standards for the computerized representation of 
  building product models.

In addition to submissions from researchers, the journal invites
articles from industry and software developers, such as those
presenting new capabilities being incorporated into software
products, or how companies are applying state-of-the-art IT solutions
to design and construction practice.

A special section of the journal will encourage scholarly
discussions as a two-way communication between the commentator and
the author of the original article.

2. SUBMISSIONS

The language of the journal is English.

Papers eligible for publication should present original research or
be state-of the art reviews. Papers presenting research in the early
stages or research ideas in general will not be accepted. 

Papers submitted to ITcon will pass through a conventional refereeing
process which ensures the same high-quality standards as expected
>from  paper journals. For the typical paper, the review period should
be no longer than one month.  All correspondence is through
electronic mail.

All papers must be submitted by e-mail in Rich Text Format (RTF) or
in PostScript following the ITcon guide-line style sheets available
on the WWW server. Submissions must be sent to the following address
by registered e-mail: 

       ITcon.submissions@fagg.uni-lj.si

Authors receive an electronic acknowledgement of their submissions
after the file is reviewed for submission compliance.

Accepted articles are published via the World-Wide-Web. After the
final edition has been received it goes into production immediately.
Publication consists of placing a HyperText Markup Language (HTML)
source on the ITcon WWW server and PostScript version in an
electronic archive.

3. SUBSCRIPTIONS (WWW site, mailing list, printed edition)

This electronic journal is distributed freely to the ITcon
subscribers. Primary means of distribution is the World Wide Web.
The ITcon home page is under construction at:

        http://itcon.fagg.uni-lj.si/~itcon/

An ITcon.announce mailing list has been set up to distribute news,
announcements, calls for papers and abstracts of published papers.
The list is not public - no discussion may take place in the list and
only the editors are allowed to write into it so it should really be
a low volume high content information source. To keep in touch with
the developments related to the journal, please subscribe! 

To subscribe send email to:
        maiser@fagg.uni-lj.si 

Write
        sub itcon.announce
        end

in the body of the message. Upon subscription you will receive more 
information on the journal.

ITcon will also consider publishing printed hardbound yearly volumes 
which would become available at similar cost as the yearly subscriptions 
of other journals.

4. MASTHEAD

PUBLISHER
  Royal Institute of Technology, Stockholm, Sweden.

TITLE EDITOR

  Prof. Bo-Christer Bjoerk bjork@ce.kth.se
        Royal Institute of Technology (KTH), Stockholm, Sweden.

ASSOCIATE EDITORS

  Prof. Charles M. Eastman    chuck@gsaup.ucla.edu
        University of California at Los Angeles (UCLA), USA.
 
  Asst. Prof. Ziga Turk    ziga.turk@ikpir.fagg.uni-lj.si
        University of Ljubljana, Slovenia.

  Dr. Dana J. Vanier       vanier@irc.lan.nrc.ca
        Institute for Research in Construction, Ottawa, Canada.

EDITORIAL ADVISORY BOARD
 
The following international IT experts in all construction 
disciplines have already agreed to participate on the board: 

 Robert Amor,
        University of Auckland, New Zealand. 
 Godfried Augenbroe,
        Delft University of Technology, Netherlands. 
 Marin P. Betts,
        University of Salford, United Kingdom. 
 Alan Bridges,
        University of Strathclyde, United Kingdom. 
 Per Christiansson,
        Lund University, Sweden. 
 Robin Drogemuller,
        James Cook University of North Queensland, Australia. 
 Thomas Froese,
        University of British Columbia, Canada.
 James Garrett, 
        Carnegie Mellon University, USA. 
 John Gero,
        University of Sydney, Australia. 
 Matti Hannus,
        Technical Research Centre of Finland, Finland. 
 Krishan S. Mathur,
        National University of Singapore, Singapore. 
 Patrice Poyet,
        CSTB, France. 
 Ron Sharpe,
        CISRO, Australia. 
 Ian Smith, 
        Federal Institute of Technology, Switzerland.
 Raimar J. Scherer,
        Technische Universitaet Dresden, Germany. 
 Tor G. Syvertsen, 
        The Norwegian Institute of Technology, Norway. 
 Paul M. Teicholz,
        Stanford University, USA. 
 Iris D. Tommelein,
        University of Michigan, USA.
 James A. Turner,
        University of Michigan, USA.
 Robert Woodbury,
        University of Adelaide, Australia. 

We would like you to consider subscribing to the ITcon.announce list
and hereby call for papers within the scope of the journal. Please
forward this announcement and call to your friends and colleagues.

        Bo-Christer Bjoerk
        Charles M. Eastman
        Ziga Turk
        Dana J. Vanier

For more information:
* subscribe to the itcon.announce list
* visit http://itcon.fagg.uni-lj.si/~itcon/
* ask the editors who receive mail as itcon.editors@fagg.uni-lj.si




From Vanier@irc.lan.nrc.ca Sun May 28 17:02:28 EDT 1995
Article: 2140 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!venus.sun.com!cs.utexas.edu!utnut!nott!nrcnet0.nrc.ca!ratilal
From: Vanier <Vanier@irc.lan.nrc.ca>
Newsgroups: sci.engr.lighting
Subject: (no subject)
Date: 25 May 1995 23:11:50 GMT
Organization: IRC/NRCC
Lines: 184
Message-ID: <3q32rm$4hp@nrcnet0.nrc.ca>
NNTP-Posting-Host: www.irc.nrc.ca
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.1N (Macintosh; I; 68K)
To: NEW!Electronic,Journal,-,ITcon
X-URL: news:sci.engr.lighting

                 *** FIRST  ANNOUNCEMENT ***
                  ***   CALL FOR PAPERS   ***

    ELECTRONIC JOURNAL OF INFORMATION TECHNOLOGIES IN CONSTRUCTION

A new peer-reviewed, aperiodic journal called the Electronic Journal
of Information Technologies in Construction will be available later
this year. Scheduled to begin publishing in August 1995, ITcon will
provide a new medium for researchers for the information technology
applications in the construction industry. 

With short lead times ITcon will assist the rapid diffusion of
research results. It is the first electronic journal for 
construction addressing specifically the domain of IT.

1. JOURNAL SCOPE

Papers will be published in the following areas:

* Construction process and enterprise modeling using IT as an 
  enabling technology,
* IT strategies within building organizations and groups,
* IT-based techniques for problem solving in construction,
* IT-supported communication across or within disciplines,
* Methods for concurrent engineering,
* Education and training in Information Technologies,
* Remote communication between programs and other computing 
  techniques,
* Standards for structuring and exchanging data within the building 
  lifecyle, and
* Technologies and standards for the computerized representation of 
  building product models.

In addition to submissions from researchers, the journal invites
articles from industry and software developers, such as those
presenting new capabilities being incorporated into software
products, or how companies are applying state-of-the-art IT solutions
to design and construction practice.

A special section of the journal will encourage scholarly
discussions as a two-way communication between the commentator and
the author of the original article.

2. SUBMISSIONS

The language of the journal is English.

Papers eligible for publication should present original research or
be state-of the art reviews. Papers presenting research in the early
stages or research ideas in general will not be accepted. 

Papers submitted to ITcon will pass through a conventional refereeing
process which ensures the same high-quality standards as expected
>from  paper journals. For the typical paper, the review period should
be no longer than one month.  All correspondence is through
electronic mail.

All papers must be submitted by e-mail in Rich Text Format (RTF) or
in PostScript following the ITcon guide-line style sheets available
on the WWW server. Submissions must be sent to the following address
by registered e-mail: 

       ITcon.submissions@fagg.uni-lj.si

Authors receive an electronic acknowledgement of their submissions
after the file is reviewed for submission compliance.

Accepted articles are published via the World-Wide-Web. After the
final edition has been received it goes into production immediately.
Publication consists of placing a HyperText Markup Language (HTML)
source on the ITcon WWW server and PostScript version in an
electronic archive.

3. SUBSCRIPTIONS (WWW site, mailing list, printed edition)

This electronic journal is distributed freely to the ITcon
subscribers. Primary means of distribution is the World Wide Web.
The ITcon home page is under construction at:

        http://itcon.fagg.uni-lj.si/~itcon/

An ITcon.announce mailing list has been set up to distribute news,
announcements, calls for papers and abstracts of published papers.
The list is not public - no discussion may take place in the list and
only the editors are allowed to write into it so it should really be
a low volume high content information source. To keep in touch with
the developments related to the journal, please subscribe! 

To subscribe send email to:
        maiser@fagg.uni-lj.si 

Write
        sub itcon.announce
        end

in the body of the message. Upon subscription you will receive more 
information on the journal.

ITcon will also consider publishing printed hardbound yearly volumes 
which would become available at similar cost as the yearly subscriptions 
of other journals.

4. MASTHEAD

PUBLISHER
  Royal Institute of Technology, Stockholm, Sweden.

TITLE EDITOR

  Prof. Bo-Christer Bjoerk bjork@ce.kth.se
        Royal Institute of Technology (KTH), Stockholm, Sweden.

ASSOCIATE EDITORS

  Prof. Charles M. Eastman    chuck@gsaup.ucla.edu
        University of California at Los Angeles (UCLA), USA.
 
  Asst. Prof. Ziga Turk    ziga.turk@ikpir.fagg.uni-lj.si
        University of Ljubljana, Slovenia.

  Dr. Dana J. Vanier       vanier@irc.lan.nrc.ca
        Institute for Research in Construction, Ottawa, Canada.

EDITORIAL ADVISORY BOARD
 
The following international IT experts in all construction 
disciplines have already agreed to participate on the board: 

 Robert Amor,
        University of Auckland, New Zealand. 
 Godfried Augenbroe,
        Delft University of Technology, Netherlands. 
 Marin P. Betts,
        University of Salford, United Kingdom. 
 Alan Bridges,
        University of Strathclyde, United Kingdom. 
 Per Christiansson,
        Lund University, Sweden. 
 Robin Drogemuller,
        James Cook University of North Queensland, Australia. 
 Thomas Froese,
        University of British Columbia, Canada.
 James Garrett, 
        Carnegie Mellon University, USA. 
 John Gero,
        University of Sydney, Australia. 
 Matti Hannus,
        Technical Research Centre of Finland, Finland. 
 Krishan S. Mathur,
        National University of Singapore, Singapore. 
 Patrice Poyet,
        CSTB, France. 
 Ron Sharpe,
        CISRO, Australia. 
 Ian Smith, 
        Federal Institute of Technology, Switzerland.
 Raimar J. Scherer,
        Technische Universitaet Dresden, Germany. 
 Tor G. Syvertsen, 
        The Norwegian Institute of Technology, Norway. 
 Paul M. Teicholz,
        Stanford University, USA. 
 Iris D. Tommelein,
        University of Michigan, USA.
 James A. Turner,
        University of Michigan, USA.
 Robert Woodbury,
        University of Adelaide, Australia. 

We would like you to consider subscribing to the ITcon.announce list
and hereby call for papers within the scope of the journal. Please
forward this announcement and call to your friends and colleagues.

        Bo-Christer Bjoerk
        Charles M. Eastman
        Ziga Turk
        Dana J. Vanier

For more information:
* subscribe to the itcon.announce list
* visit http://itcon.fagg.uni-lj.si/~itcon/
* ask the editors who receive mail as itcon.editors@fagg.uni-lj.si




From Vanier@irc.lan.nrc.ca Sun May 28 17:02:29 EDT 1995
Article: 2141 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!venus.sun.com!cs.utexas.edu!utnut!nott!nrcnet0.nrc.ca!ratilal
From: Vanier <Vanier@irc.lan.nrc.ca>
Newsgroups: sci.engr.lighting
Subject: NEW! Electronic Journal - ITcon
Date: 25 May 1995 23:12:23 GMT
Organization: IRC/NRCC
Lines: 184
Message-ID: <3q32sn$4hp@nrcnet0.nrc.ca>
NNTP-Posting-Host: www.irc.nrc.ca
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.1N (Macintosh; I; 68K)
X-URL: news:sci.engr.lighting

                 *** FIRST  ANNOUNCEMENT ***
                  ***   CALL FOR PAPERS   ***

    ELECTRONIC JOURNAL OF INFORMATION TECHNOLOGIES IN CONSTRUCTION

A new peer-reviewed, aperiodic journal called the Electronic Journal
of Information Technologies in Construction will be available later
this year. Scheduled to begin publishing in August 1995, ITcon will
provide a new medium for researchers for the information technology
applications in the construction industry. 

With short lead times ITcon will assist the rapid diffusion of
research results. It is the first electronic journal for 
construction addressing specifically the domain of IT.

1. JOURNAL SCOPE

Papers will be published in the following areas:

* Construction process and enterprise modeling using IT as an 
  enabling technology,
* IT strategies within building organizations and groups,
* IT-based techniques for problem solving in construction,
* IT-supported communication across or within disciplines,
* Methods for concurrent engineering,
* Education and training in Information Technologies,
* Remote communication between programs and other computing 
  techniques,
* Standards for structuring and exchanging data within the building 
  lifecyle, and
* Technologies and standards for the computerized representation of 
  building product models.

In addition to submissions from researchers, the journal invites
articles from industry and software developers, such as those
presenting new capabilities being incorporated into software
products, or how companies are applying state-of-the-art IT solutions
to design and construction practice.

A special section of the journal will encourage scholarly
discussions as a two-way communication between the commentator and
the author of the original article.

2. SUBMISSIONS

The language of the journal is English.

Papers eligible for publication should present original research or
be state-of the art reviews. Papers presenting research in the early
stages or research ideas in general will not be accepted. 

Papers submitted to ITcon will pass through a conventional refereeing
process which ensures the same high-quality standards as expected
>from  paper journals. For the typical paper, the review period should
be no longer than one month.  All correspondence is through
electronic mail.

All papers must be submitted by e-mail in Rich Text Format (RTF) or
in PostScript following the ITcon guide-line style sheets available
on the WWW server. Submissions must be sent to the following address
by registered e-mail: 

       ITcon.submissions@fagg.uni-lj.si

Authors receive an electronic acknowledgement of their submissions
after the file is reviewed for submission compliance.

Accepted articles are published via the World-Wide-Web. After the
final edition has been received it goes into production immediately.
Publication consists of placing a HyperText Markup Language (HTML)
source on the ITcon WWW server and PostScript version in an
electronic archive.

3. SUBSCRIPTIONS (WWW site, mailing list, printed edition)

This electronic journal is distributed freely to the ITcon
subscribers. Primary means of distribution is the World Wide Web.
The ITcon home page is under construction at:

        http://itcon.fagg.uni-lj.si/~itcon/

An ITcon.announce mailing list has been set up to distribute news,
announcements, calls for papers and abstracts of published papers.
The list is not public - no discussion may take place in the list and
only the editors are allowed to write into it so it should really be
a low volume high content information source. To keep in touch with
the developments related to the journal, please subscribe! 

To subscribe send email to:
        maiser@fagg.uni-lj.si 

Write
        sub itcon.announce
        end

in the body of the message. Upon subscription you will receive more 
information on the journal.

ITcon will also consider publishing printed hardbound yearly volumes 
which would become available at similar cost as the yearly subscriptions 
of other journals.

4. MASTHEAD

PUBLISHER
  Royal Institute of Technology, Stockholm, Sweden.

TITLE EDITOR

  Prof. Bo-Christer Bjoerk bjork@ce.kth.se
        Royal Institute of Technology (KTH), Stockholm, Sweden.

ASSOCIATE EDITORS

  Prof. Charles M. Eastman    chuck@gsaup.ucla.edu
        University of California at Los Angeles (UCLA), USA.
 
  Asst. Prof. Ziga Turk    ziga.turk@ikpir.fagg.uni-lj.si
        University of Ljubljana, Slovenia.

  Dr. Dana J. Vanier       vanier@irc.lan.nrc.ca
        Institute for Research in Construction, Ottawa, Canada.

EDITORIAL ADVISORY BOARD
 
The following international IT experts in all construction 
disciplines have already agreed to participate on the board: 

 Robert Amor,
        University of Auckland, New Zealand. 
 Godfried Augenbroe,
        Delft University of Technology, Netherlands. 
 Marin P. Betts,
        University of Salford, United Kingdom. 
 Alan Bridges,
        University of Strathclyde, United Kingdom. 
 Per Christiansson,
        Lund University, Sweden. 
 Robin Drogemuller,
        James Cook University of North Queensland, Australia. 
 Thomas Froese,
        University of British Columbia, Canada.
 James Garrett, 
        Carnegie Mellon University, USA. 
 John Gero,
        University of Sydney, Australia. 
 Matti Hannus,
        Technical Research Centre of Finland, Finland. 
 Krishan S. Mathur,
        National University of Singapore, Singapore. 
 Patrice Poyet,
        CSTB, France. 
 Ron Sharpe,
        CISRO, Australia. 
 Ian Smith, 
        Federal Institute of Technology, Switzerland.
 Raimar J. Scherer,
        Technische Universitaet Dresden, Germany. 
 Tor G. Syvertsen, 
        The Norwegian Institute of Technology, Norway. 
 Paul M. Teicholz,
        Stanford University, USA. 
 Iris D. Tommelein,
        University of Michigan, USA.
 James A. Turner,
        University of Michigan, USA.
 Robert Woodbury,
        University of Adelaide, Australia. 

We would like you to consider subscribing to the ITcon.announce list
and hereby call for papers within the scope of the journal. Please
forward this announcement and call to your friends and colleagues.

        Bo-Christer Bjoerk
        Charles M. Eastman
        Ziga Turk
        Dana J. Vanier

For more information:
* subscribe to the itcon.announce list
* visit http://itcon.fagg.uni-lj.si/~itcon/
* ask the editors who receive mail as itcon.editors@fagg.uni-lj.si




From La Empire Sun May 28 17:02:30 EDT 1995
Article: 2142 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!howland.reston.ans.net!nctuccca.edu.tw!aladdin.iii.org.tw!shts.seed.net.tw!usenet
From: anfang@shts.seed.net.tw (LA King)
Newsgroups: sci.engr.lighting
Subject: UV LIght?  Help Me!
Date: Thu, 25 May 1995 16:28:38 GMT
Organization: de Fomosa
Lines: 17
Message-ID: <3q2ebv$fsv@shts.seed.net.tw>
Reply-To: La Empire
NNTP-Posting-Host: 192.72.75.113
X-Newsreader: Forte Free Agent v0.55

Hi everybody on Internet:

 I has a quit silly question, that is How many kinds of UV LIght?
and how does it work? 
 I want to take that to deal with photochemical, but I cannot really
know what's kind can take effect.
 I do wish somebody can help me.  thanks

\\\\\ /////      Lawrence 
 \ ^   ^ /   anfang@shts.seed.net.tw
  ( o o )
   / O \
  // - \\   
  \\|||//   

  



From clarke@canuck.com Sun May 28 17:02:31 EDT 1995
Article: 2143 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!hookup!news.Direct.CA!sunserver.insinc.net!canuck.canuck.com!usenet
From: clarke@canuck.com (David Clarke)
Newsgroups: sci.engr.lighting
Subject: Re: Roadway Lighting - MH vs HPS
Date: 27 May 1995 02:55:28 GMT
Organization: Canada Connect Corporation
Lines: 29
Message-ID: <3q64b0$4ra@mp.canuck.com>
References: <Pine.OSF.3.91.950523133109.24135C-100000@falcon.cc.ukans.edu>
NNTP-Posting-Host: ccc051.canuck.com
X-Newsreader: WinVN 0.92.6

In article <Pine.OSF.3.91.950523133109.24135C-100000@falcon.cc.ukans.edu>, cbelcher@falcon.cc.ukans.edu (M. Clay Belcher) says:
>
>I just wanted to check in again on the great roadway light source debate.  I
>would like to hear from those involved in roadway lighting around the U.S. as
>to what source you currently prefer and why - Metal Halide or High Pressure
>Sodium?  What is actually being installed in your area?  What trend do you
>see for the future?
>


My personal preference has to be Metal Halide.

Here in Calgary (Alberta, Canada) most roadway lighting is HPS.  A few MH 
units have been installed, presumably during relamping and as a test, and the
results are a dramatic improvement in the quality of the roadway lighting - and
hence improved roadway safety.  My opinion is that the HPS units can't be changed
out fast enough.

I prefer MH over HPS because: MH enables one to see details easily;  MH doesn't
"wash out" the illumination of the roadway by ones vehicle headlights (as does
HPS);  and MH provides a more natural spectral output (man's eyes are not that 
sensitive to that dull orange light !).

My current client has expressed a preference to MH over HPS for all lighting in their
new plant.  They are not alone in their preference.

As an aside; there are still a few old mercury lights in the city - I just love them.




From quix@igwe.vub.ac.be Sun May 28 17:02:31 EDT 1995
Article: 2144 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!EU.net!Belgium.EU.net!chaos.kulnet.kuleuven.ac.be!news.vub.ac.be!igwe1.vub.ac.be!quix
From: quix@igwe.vub.ac.be (Stefaan Quix)
Newsgroups: sci.engr.lighting
Subject: Open City | Urban X-perience
Date: 25 May 1995 18:28:52 GMT
Organization: Brussels Free Universities VUB/ULB
Lines: 25
Message-ID: <3q2i94$j13@rc1.vub.ac.be>
NNTP-Posting-Host: igwe1.vub.ac.be.
X-Newsreader: TIN [version 1.2 PL2]


*********************************************************

   O P E N  C I T Y  |  U R B A N  E X P E R I E N C E
       http://www.innet.net/brussels-arts/OpenWeb
*********************************************************

The Beursschouwburg is an art centre in Brussels, Belgium 
which focuses strongly on the triangular relationship 
between young artists, established artists, and the public,
thus cutting across all disciplines and generations. This 
month they presents the results of a year long project
about urbanism and decay.
Large parts of this programme, inclusive research results,
photographs by Camilo Vergara, text by Robert Bishop, ... can
now also be accessed in English on the World Wide Web at the
URL http://www.innet.net/brussels-arts/OpenWeb/
where a pointer to the English version is available.

Greetz, and enjoy the O p e n W e b

Stefaan Quix,
Webmaster Beursschouwburg
beurs@innet.net
quix@igwe1.vub.ac.be


From sila+@CMU.EDU Sun May 28 17:02:32 EDT 1995
Article: 2145 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!news.iag.net!usenet.eel.ufl.edu!news.mathworks.com!uhog.mit.edu!nntp.club.cc.cmu.edu!cantaloupe.srv.cs.cmu.edu!bb3.andrew.cmu.edu!andrew.cmu.edu!sb8j+
From: Sila Berkol <sila+@CMU.EDU>
Newsgroups: sci.engr.lighting
Subject: Sensor positioning
Date: Fri, 26 May 1995 15:35:53 -0400
Organization: Masters student, Architecture, Carnegie Mellon, Pittsburgh, PA
Lines: 22
Message-ID: <cjlWqNi00YUrQJUEZS@andrew.cmu.edu>
NNTP-Posting-Host: po8.andrew.cmu.edu

Hi!

I was wondering if anyone could help me with positioning light sensors. 

I don't know if there is any literature on this issue, but if there is
please let me know. 

The light sensors are going to be used for dimming. I think we can't
mount them somewhere on the workplane because they will be obstructed
with passign shadows, etc. However, do you think it is reasonable to
mount light sensors on a ceiling structure and calibrate it accordingly? 

If you have any sources that you can direct me to or any ideas, please
send me an email. 

Thanks!

Sila B. Kiliccote
Department of Architecture
Carnegie Mellon University

sila@cmu.edu


From zarnott@aol.com Sun May 28 17:02:33 EDT 1995
Article: 2146 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!gw2.att.com!gw1.att.com!fnnews.fnal.gov!uwm.edu!hookup!news.mathworks.com!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: zarnott@aol.com (ZARNOTT)
Newsgroups: sci.engr.lighting
Subject: Re: Dimming fluorescent lamps
Date: 26 May 1995 16:57:04 -0400
Organization: America Online, Inc. (1-800-827-6364)
Lines: 42
Sender: root@newsbf02.news.aol.com
Message-ID: <3q5fb0$psh@newsbf02.news.aol.com>
References: <3q3kpo$fr6@newsbf02.news.aol.com>
Reply-To: zarnott@aol.com (ZARNOTT)
NNTP-Posting-Host: newsbf02.mail.aol.com

The Lutron Eco-10 (10%) and Hi-lume (1%) Fluorescent Dimmng ballasts CAN
NOT BE controlled with a regular incandescent dimmer.  They operate on a
phase control method which employs the use of an additional 3rd wire.  You
have hot, dimmed hot, and neutral.  The new LightOLier ballast uses a 3
wire configuration as well.  However, it uses a pulse modulated control
method which does not make it interchangable with Lutron controls.

Also - Advance and Motorola have 4-wire systems.  Hot, neutral and 2 for
the 0-10 volt signal.  In most cases people feel it is easier to retrofit
these ballasts. Not alway true.  Example - In Chicago you need to run
conduit for the high and low voltage wires.  This could make the retrofit
for 0-10 volt ballasts more expensive.  Pulling a third wire through the
wall is a pain too.

Also if you hook up a Lutron or LightOlier ballast incorrectly - it just
doesn't work.

If you hook up the Advance or Motorola ballast incorrectly - you can blow
up the entire circuit of ballasts.  (It does happen)

Lutron ballast cost more than the Advance or Motorola.  In the past these
dimming ballasts were very specialty items and produced in small
quantities.  Now with the Eco-10, the price of the ballast has fallen by
50%.  I expect the price of the Hi-lume will fall as the volumes and
technology improves.  

Regardless of what ballast you use - as power costs exceed 8 cents per kWh
in your service area, and you have ample daylight, the use of daylight
sensors and dimming ballasts is an economically good idea.  First costs
are higher of course. Dimming ballasts have more components than fixed
output ballasts.

I'd like to see a company make a decorative IR control that sits on a
persons desk that incorporates a daylight sensor and manual dimming.  The
fixtures above that persons area would be constantly changing with the
available light - and the person could manually adjust the lighting lower
to get a better lighting environment when the needed to do computer work.

Some day............


Mike Z


From parapsycho@aol.com Sun May 28 17:02:34 EDT 1995
Article: 2147 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: parapsycho@aol.com (Parapsycho)
Newsgroups: sci.engr.lighting
Subject: darkbulbs
Date: 26 May 1995 00:27:07 -0400
Organization: America Online, Inc. (1-800-827-6364)
Lines: 10
Sender: root@newsbf02.news.aol.com
Message-ID: <3q3lar$fun@newsbf02.news.aol.com>
Reply-To: parapsycho@aol.com (Parapsycho)
NNTP-Posting-Host: newsbf02.mail.aol.com

I had seen a book in a bookstore many years back showing things that were
invented by accident.  I don't remember the term used to describe these
accidental discoveries, but this was the name of the book; I believe it
starts with an S.  Anyway, this particular lightbulb supposedly makes the
room darker by actually producing darkness.  There also was talk about a
coating put on some bulbs to absorb infrared lightwaves which would allow
application for refrigeration; problem being, the bulbs would frost over
thus disallowing absorption of the infrared light.  Any info on these
topics would be greatly appreciated.  -- The internet is a river and my
mind is a sponge.... A VERY LARGE ONE - Michael Parker


From JCARP@netins.net Sun May 28 17:02:35 EDT 1995
Article: 2148 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!gw2.att.com!gw1.att.com!fnnews.fnal.gov!uwm.edu!hookup!news.mathworks.com!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!uunet!dove.nist.gov!gateway
From: JCARP@netins.net (Jeff Carpenter)
Newsgroups: sci.engr.lighting
Subject: Re: Office lighting
Date: 26 May 1995 16:56:21 -0400
Organization: NIST
Lines: 39
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <9505262056.AA20166@dove.nist.gov>
NNTP-Posting-Host: dove.nist.gov
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"

>In response to the question about making a building with window film
>look "open", I would not suggest washing the inside of the glass
>with light.  What makes an interior space look open is surface
>luminance, and that means washing walls, ceilings, and vertical
>surfaces with light.  Make sure the finishes are light in color,
>then add some light to the surface through wallwashing, uplighting,
>wall sconces, valances, pendants, etc. etc.  What won't work is
>low-brightness downlights or recessed parabolics located so that
>their light doesn't strike any vertical surfaces.
>
>Washing the glass will not achieve surface brightness. Your watts
>are better spent on the walls and ceiling.
>
>Naomi Miller
>Lighting Research Center

I disagree that this will not work.  While I agree that surface illuminance
is important (thus the reason indirect works well), I don't believe it is
the ONLY solution.  Light transmission through glass is a bi-directional
phenomenon.  You can use daylight harvesting to add to the illuminance in an
interior space, thus you can also use light from the interior to add to the
illuminance of an exterior space.  GRANTED this is a waste of energy....who
wants to light the outside?  But in this case, that is the effect desired.
You may not necessarily want to actually LIGHT the outside but you DO want
light from the interior to be transmitted through the glass.  People from
the outside will see this light transmitted from the interior, just like you
can sense daylight through a windows.  From a street or sidewalk, interior
surface illuminance will not have an intensity high enough to be noticed
>from  outside at a distance, but intense light, directly at the windows will
be noticed and your effect will be achieved.  By the way Naomi...are you
>from  Rensselaer?
*****************************************************************
* Tip of the day:   RAM DISK is NOT an installation procedure!  *
*****************************************************************
* Jeff Carpenter              email:  jcarp@netins.net          *
* Des Moines, IA                      jeffc54@aol.com           *
*                                     75231,1226@compuserve.com *
*****************************************************************



From mshook@utkvx.utk.edu Sun May 28 17:02:36 EDT 1995
Article: 2149 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!taco.cc.ncsu.edu!gatech!darwin.sura.net!martha.utk.edu!usenet
From: mshook@utkvx.utk.edu (the Wondering Wanderer)
Newsgroups: sci.engr.lighting
Subject: RE: Sources for dichroic glass?
Date: Fri, 26 May 95 01:25:49 +400
Organization: University of Tennessee
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In Article <3q21qj$75t@imp.demon.co.uk>
greg@mynx.demon.co.uk (Greg Brown) writes:
>Does anyone out there have any information on dichroic filters?

Dichroic filters are a color filter with a glass base and a chemical color
medium coated on one side. 

Contact Dennis Farley at Bandit Lites (615) 675-0880. He can tell you more
about them. I Know that they can be ordered in almost any color and custom
sizes. 

-mike
===============================================================================
| the Wondering Wanderer ||  The opinions of the ||  If a game has no ending, |
|    Michael D. Shook    || management are their ||    need there be rules    |
|  MSHOOK@utkvx.utk.edu  ||     own problem!     ||  <<what about referees?>> |
|    MIKESHOOK@aol.com   ||                      ||        <coaches?!>        |
===============================================================================


From tiller@irc.lan.nrc.ca Sun May 28 17:02:37 EDT 1995
Article: 2150 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!gw2.att.com!gw1.att.com!fnnews.fnal.gov!uwm.edu!vixen.cso.uiuc.edu!howland.reston.ans.net!news.starnet.net!wupost!news.utdallas.edu!corpgate!bcarh189.bnr.ca!nott!nrcnet0.nrc.ca!ratilal
From: "Tiller, Dale" <tiller@irc.lan.nrc.ca>
Newsgroups: sci.engr.lighting
Subject: ****Computer Based Questionnaire Software****
Date: 26 May 1995 19:57:50 GMT
Organization: National Research Council, Canada
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Message-ID: <3q5bru$382@nrcnet0.nrc.ca>
NNTP-Posting-Host: 132.246.124.76

Software to Automatically Administer Questionnaires
on Computer Screens

The National Research Council of Canada has developed new
patent-pending software to automatically administer on-screen
questionnaires to computer users.  We would like to know whether
a market exists for this software.  Please read the software
description below and reply to us directly by email if you are
interested.  Thanks in advance.

The traditional method of obtaining questionnaire data uses a paper
form that each respondent completes at their leisure.  This has
obvious practical limitations if one is interested in surveying
opinion several times in one day, or if it was important to
administer a questionnaire in response to some specific random
enviromental condition (e.g. the office suddenly becomes cold).
In general, paper questionnaires can be disruptive to respondents,
and labour intensive and expensive to administer and score.
A computer-based questionnaire would solve many of these problems,
and be a very efficient and economical method of collecting survey
data.

The National Research Council Canada has developed custom software,
called "ScreenSurvey", which automatically administers questionnaires
on computer users’ screens.  When administered, the questionnaire
takes the form of a "window" that appears over other open
applications.  The individual questions are designed using custom
"Form Builder" software.  The Form Builder allows complete flexibility
in the placing of items on the question forms, their size and their
colour.  Graphics can also be placed on the forms to illustrate
a question, or as a custom background.  Questions can have one of
four response types:

1. A list of responses from which the subject may pick only one
(mutually exclusive and exhaustive response list);
2. A list of responses from which the subject may pick as many as
apply (check list);
3. A sliding scale labelled with descriptors: the subject places
a pointer on the scale at a position which best describes their
response (analogue scale);
4. Open-ended text entry box.

More than one of these response types can be combined on a single
question form.

Once created, the questions can be administered in any order,
at dates and times as specified by the experimenter in a separate
data file.  Alternatively, computer users themselves can initiate
a questionnaire whenever they want, simply by clicking on an icon.
Any number of questions may be asked with any frequency.  In addition
certain questions can be defined as "demographic" questions,
which are asked only once; these are questions for which the answers
would not be expected to change over time.  The answers to the
demographic questions can be used to decide which questions are
subsequently asked.  For example, if a user identifies themselves
as being female, they would not subsequently be asked to complete
a checklist of clothing that applied to males, but instead would be
asked to complete a checklist that applied to females.  This feature
can also be used to present questions in a user's language of choice.

The responses to the questions are stored on the host computer’s
hard disk for collection at the end of the study by the experimenter.  The stored data are easily accessible by spreadsheet or statistical analysis packages.

If you are interested in this software, or have any comments,
please respond to us directly by email at the above address.  If
you know someone who might be interested but does not read Usenet,
we would appreciate it if you would forward a copy of this message
to them.  Thank you for your time.

Guy R. Newsham, Ph.D.  (newsham@irc.lan.nrc.ca)
Dale K. Tiller, D.Phil.  (tiller@irc.lan.nrc.ca)

Institute for Research in Construction
National Research Council Canada
Ottawa, ON
K1A 0R6



From lamptech@panix.com Sun May 28 17:02:38 EDT 1995
Article: 2151 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!panix!not-for-mail
From: lamptech@panix.com (Lamp Technology)
Newsgroups: sci.engr.lighting
Subject: Re: LED technology
Date: 26 May 1995 10:42:27 -0400
Organization: PANIX Public Access Internet and Unix, NYC
Lines: 47
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John MacDonald (nstn2905@fox.nstn.ca) wrote:
: In article <95May17.180914-0700_pdt.201+520@haven.uniserve.com>, jsani@ledalite.com (Jeffrey Sani) says:
: >
: >I am looking for any information regarding new LED technology.  I have
: >recently become aware of the availability of blue LEDs.  I suppose this will
: >have quite an impact on niche fields such as emergency lighting as there
: >already exists red and green.  Any feedback will be much appreciated.
: >
: >Regards,
: >Jeffrey P. Sani, B.Sc., MIES                          Ph:    604-888-6811
: >Lighting Engineer, Product Applications     Fax:   604-888-2003
: >Ledalite Architectural Products Inc.            email: jsani@ledalite.com
: >
: Jeffrey, there was a really well written article in the February issue
: of WIRED magazine ( a delightful mag BTW).  It gave insight into the 
: possible ramifications of the emergence of the blue LED on the lighting
: industry.  Note: I think it was the February issue, if you can't locate it
: in that issue, E-mail me and I'll look in my archive.


: ***********************************************
: ... and crawling on the planet's face
: 	some insects called the human race...
: ... lost in time ... lost in space
: ... and meaning
: ***********************************************
Jeffrey-

The idea of using blue LED's for exit lighting seems to me to be quite 
unrealistic. Blue LED's are extremely expensive (as if LED retrofit kits 
and LED exit signs aren't expensive enough) and they are very dim. To 
make an exit sign bright enough with a blue LED system, it would seem to 
me to be astonomical price wise since it would require many more 
ultrabright blue LED's than the standard LED exit sign (red or green). I 
may be wrong but my company offers blue LED's (ten time the price of 
standard colors) and nobody orders them due to the difficulty of the eye 
detecting whether it is lit up or not. Perhaps in a dark, smokey room it 
would appear more visible, however I doubt it.


-------------------------------------------
 Janet Connolly      Lamp Technology, Inc.
 lamptech@panix.com    1-800-KEEP-LIT
  "We a have bulb for every socket"
  http://www.webscope.com/lamptech/
-------------------------------------------



From iashdown@ledalite.com Sun May 28 17:02:39 EDT 1995
Article: 2152 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!emf.emf.net!overload.lbl.gov!lll-winken.llnl.gov!uwm.edu!math.ohio-state.edu!usc!nic-nac.CSU.net!csulb.edu!info.ucla.edu!news.bc.net!torn!fonorola!uniserve2!usenet
From: iashdown@haven.uniserve.com (Ian Ashdown)
Newsgroups: sci.engr.lighting
Subject: Re: help:  reducing filters' interreflections
Date: 26 May 1995 15:08:02 GMT
Organization: Your Organization
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In article <sfoo-190595020625@132.236.155.79>, sfoo@graphics.cornell.edu (Choong) says:
>
>Can anyone advise me on how to reduce/eliminate interreflections between
>interference filters and ND filters (reflective) when used with
>a camera?
>
>I am using narrow band interference filters and ND filters(reflective)
>infront of a CCD camera and they are causing lots of overlapped secondary/
>tertiary... images from the interreflections.
>
>Any advice/help is much appreciated.  Thanks.
>
>-Sing
>sfoo@graphics.cornell.edu
If you are using a lens with a reasonably narrow field of view, you
could tilt one or more of your filters at 45 degrees to the lens axis.
The reflected light can then be directed to a light trap rather than
back into the filter in front of it. Of course, this requires a larger
filter to prevent vignetting. (If you have a 90-degree wide-angle lens,
forget it -- the filter would have to be infinitely long!)

As for an efficient light trap, the ideal device is apparently a glass
tube shaped like a cow's horn that is painted matte black on the inside.
In fact, I recall reading a paper on the topic -- the best performance
the researcher's obtained was from a cow horn painted matte black.

I have always wanted to submit a purchase requisition for ten thousand
cow horns and a gallon of matte black paint to line the walls of my
photometric laboratory. It may not work, but it would be fun to see
what Purchasing would do with the request!



From ononeon@aol.com Sun May 28 17:02:40 EDT 1995
Article: 2153 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: ononeon@aol.com (OnoNeon)
Newsgroups: sci.engr.lighting
Subject: Re: Electrodeless Lamps
Date: 27 May 1995 01:59:08 -0400
Organization: America Online, Inc. (1-800-827-6364)
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Reply-To: ononeon@aol.com (OnoNeon)

In answer to the following search on electrodless lamps:
Any of the five noble gasses can be excited with a small Tesla Coil when
introduced into a vacuum tube. Some of the earliest luminous tubes used
carbon dioxide as a filling gas. However, sticking with a nobel gas will
yield a longer life.
I have succesfully illuminated neon and argon filled tubs in a microwave.
The hardest part is creating a pure enviorment for the nobel gas.
Traditional bombarding techniques have to be put aside and oven annealing
needs to be employed. Ask a local sign shop supplier for a high frequency
leak detector and you will get a small and commercially safe Tesla
Coil.For more info contact me. Ono...ono....
Ono Neon
Viva le Lumens
Shadowmaker Inc.
ph.201 694-2585


From forbesfs@aol.com Sun May 28 17:02:41 EDT 1995
Article: 2154 of sci.engr.lighting
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From: forbesfs@aol.com (Forbes F S)
Newsgroups: sci.engr.lighting
Subject: Re: 'PL Type' fluorescent replacement lamps
Date: 28 May 1995 09:07:11 -0400
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Try Phillips SL-18 compacts.  They operated well in freezing temps and
come up to full brightness in just a few minutes.  

The tubes are enclosed in a plastic globe which allows them to heat up
even when temperatures are below freezing.

They use 20 watts and are equivilent to a 60 watt incd.

If your lights are recessed they make the same light in a floodlight
housing.

I have had one outside my house in New England for 6 years burning over 5
hours each night and never had a problem in the cold weather.

If your fixture won't fit either of the Phillips lights you could try an
RS35-13WQ from INCON IND. which is a screw in retrofit utillizing a 13
watt quad bulb.

Their toll free number is 1-800-393-5630

Hope this helps


From nstn2905@fox.nstn.ca Mon May 29 21:47:47 EDT 1995
Article: 2155 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.sprintlink.net!hookup!nstn.ns.ca!nstn.ns.ca!nntp-user
From: nstn2905@fox.nstn.ca (John MacDonald)
Newsgroups: sci.engr.lighting
Subject: Re: EEG and RFI/EMF
Date: 29 May 1995 12:24:51 -0300
Organization: NSTN Inc. ICS/Windows Dialup User
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Sender: news@nstn.ns.ca
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In article <Pine.SUN.3.91.950513014254.22363C-100000@bigcat>, llile01@mail.coin.missouri.edu (Lawrence O. Lile) says:
>
>I am designing an EEG suite for a neurologist at a hospital.  He is
>very concerned about interference from fluorescent lights, VDTs, etc.
>which can ruin a sensitive EEG test.  He recommends shielding
>the entire room with copper mesh.  Has anyone done lighting design
>for a similar EMF sensitive application?  What kind of lights did you
>use?  What shielding materials work well?

Lawrence, I also just came across an article in Compliance Engineering 
magazine which deals with EMI concerns in medical environments.  It was 
in the March/April 1995 issue Page17 and was titled "Product-SAfety Requirements
for Medical Electrical Equipment. Enjoy!

***********************************************
... and crawling on the planet's face
	some insects called the human race...
... lost in time ... lost in space
... and meaning
***********************************************


From saudijobs@aol.com Mon May 29 21:47:48 EDT 1995
Article: 2156 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!bloom-beacon.mit.edu!usc!math.ohio-state.edu!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: saudijobs@aol.com (Saudi Jobs)
Newsgroups: sci.engr.lighting
Subject: ! Saudi Arabia Air Field Lighting Challenge
Date: 29 May 1995 12:13:20 -0400
Organization: America Online, Inc. (1-800-827-6364)
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Reply-To: saudijobs@aol.com (Saudi Jobs)
NNTP-Posting-Host: newsbf02.mail.aol.com

Immediate opening for airfield lighting specialist for large international
airport operations & maintenance contract. Job to start July/August. 
Minimum one year contract. round trip travel, housing, medical care, food
allowance plus tax free salary ($30 to 38K). Single Status.
Many other openings. See list that follows:
Fax 610-993-3159 (Philadelphia)
Call 800-524-6330
Email resume to saudijobs@aol.com for add info.

Job description: 
Supervise & train personnel of 24 hr air field lighting maintenance  group
in  preventive and corrective maintenance.   Translate  work orders,
sketches & blue prints into completed quality work. Coordinate with field
forces to solve technical problems. Generate  reports & notifications of
alerts to management and essential users. Generate materials requests.
Monitor and evaluate staff  performance. Skilled in use of AM/FM radios or
tower signal system to move safely on the airfield.   Includes runway,
taxiway and apron lighting fixtures, current monitors and associated
control circuits, aircraft docking loops, 400  Hz supplies, signage &
other electrical services located in the airside area of the airport.    
 BS Technical field with 6 yrs similar exp. (including 3 yrs super exp).
Or 8 years combined mgmt & applied exp in lieu of degree.       

13005   K21   Trainer, Electrical Airfield Lighting
Perform OJT in all practical areas of airfield lighting, supervise
trainees in workshops, develop curriculum, prepare lesson plans,  assign
trainees.  BS Electrical Engineering or equivalent area. Vocational
training credentials.     

Maintenance Control Services           
  K40    Supervisor, Service Desk               
  K72    Lead equipment Controller              
  K41    Supervisor,Planning & estimating     
  K42    Planner & Estimator                    
  K43    Supervisor,Preventive Maintenance      
  K44    Analyst, Preventive Maintenance        
  K45    Supervisor, Equipment Data Monitoring            
  K46    Supervisor, Reports & Analysis         
 Building & Facilities         
  K47    Supervisor, Sheet Metal Shop                            
  K48    Supervisor, Machine Shop               
  K49    Supervisor, Mechanical Equipment                     
  K50    Supervisor, Lock Shop & Key Control               
  K51    Supervisor, Fire Suppression
Cellular Comm       
  K30    Cellular Global Specialists                    
  K31    Specialist Siemens EWSD Exchange       
Utilities
  K52    Supervisor, HVAC/Refrigeration                            
  K71    Supervisor, Power Generation                           
  K53    Supervisor, HV Distribution                               
  K54    Supervisor, H V Maintenance                             
  K55    Supervisor, Air Field Lighting                            
  K56    Supervisor, UPS System     
  K69    Supervisor, Water Plants                                    
  K57    Supervisor, Waste Operations                            
  K58    Supervisor, Utility Support                                 
  K59    Supervisor, H & C Maintenance                   
Communications/Electronics/Controls               
  K05    Chief, Telephone Systems            
  K60    Supervisor Inside Plant                       
  K61    Technician, 1AESS                             
  K62    Supervisor, Television Systems                          
  K63    Supervisor, FIDS                              
  K08    Chief, Central Control /Instrumentation 
  K11    Engineer Central Computer Systems                  
  K12    Chief Local Control Systems                   
  K13    Engineer  Local Control Systems               
Specialized Equipment                
  K14    Superintendent,      
  K15    Chief, Fixed Equipment                      
  K64    Supervisor, Elevators & Escalators                    
  K70    Supervisor, Baggage Systems                 
  K65    Supervisor, Passenger Loading Bridges   
  K66    Supervisor, Inspection Systems              
  K16    Chief, Printing & Reproduction              
Procurement                  
   K67    Supervisor, Material                             
On the Job Training Program          
   K20    Trainer, Heavy Equipment 
   K21    Trainer, Electrical Airfield Lighting
   K22    Trainer, Vehicle Maintenace          
 Hospital facility Maintenance
   U90 Chief Facility  Engineer ($45K)
   U91 Facility Engineer  ($40K)        

We also recruit medical staff including RNs, Mds, technicians,
professional
hospital medical care
staff, hundreds of openings! 


From BERNELLO@aol.com Mon May 29 21:47:49 EDT 1995
Article: 2157 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.sprintlink.net!uunet!dove.nist.gov!gateway
From: BERNELLO@aol.com
Newsgroups: sci.engr.lighting
Subject: Re: EEG and RFI/EMF
Date: 29 May 1995 12:33:15 -0400
Organization: NIST
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Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <950529122722_15735606@aol.com>
NNTP-Posting-Host: dove.nist.gov

REPLY REGARDING DESIGN OF EEG ROOM FOR DOCTOR:

GE has a fiber optic XENON lamp system that will solve your problem.  Their
tech person told me that your application  and jewelry store display cases
(for security) are two of the main applications currently for the product.
 The auto industry is looking very closely along with 3M and others at fiber
optic lighting - this may  bring the prices down.

GE Contact: Scott Mangum @ 216-266-3836.  He wrote a 20 page brochure about
the product.

Ron Manganiello


From jdawson@csn.net Mon May 29 21:47:50 EDT 1995
Article: 2158 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.sprintlink.net!noc.netcom.net!simtel!col.hp.com!csn!csnnews!jdawson
From: jdawson@csn.net (Jason Dawson)
Newsgroups: sci.engr.lighting
Subject: Light Rail 3 (Indoor light mover)
Date: 29 May 1995 01:27:18 GMT
Organization: Supernet Inc. (303)-296-8202 Denver, Colorado 
Lines: 15
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NNTP-Posting-Host: 199.117.27.22
X-Newsreader: TIN [version 1.2 PL2]


Light Rail 3 for sale

Light Rail 3 used for moving lights back and for forth for indoor
greenhouses.

Light mover and rail starting at $95

E-mail for details

California Used Equipment

All lightrails are used and have been refurbished. Covered under warrenty
by California used equipment.



From scox425426@aol.com Tue May 30 23:17:32 EDT 1995
Article: 2159 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!taco.cc.ncsu.edu!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: scox425426@aol.com (SCox425426)
Newsgroups: sci.engr.lighting
Subject: Where can I get Lightwave Research LCC software?
Date: 29 May 1995 02:13:21 -0400
Organization: America Online, Inc. (1-800-827-6364)
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NNTP-Posting-Host: newsbf02.mail.aol.com

If you Know E Mail me 
SCox@aol.com
STEPHEN J


From hardballer@aol.com Tue May 30 23:17:33 EDT 1995
Article: 2160 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!news.iag.net!usenet.eel.ufl.edu!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: hardballer@aol.com (HARDBALLER)
Newsgroups: sci.engr.lighting
Subject: Re: BALLASTS - 12vdc
Date: 29 May 1995 17:31:10 -0400
Organization: America Online, Inc. (1-800-827-6364)
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Reply-To: hardballer@aol.com (HARDBALLER)
NNTP-Posting-Host: newsbf02.mail.aol.com

12vdc ballasts are becoming more available as fluorescent sources work
their way into more automotive and aircraft applications.  In all cases
the lamps are operated on inverter ballasts which convert the 12vdc into
high frequency ac.  These ballasts are available from Osram/Sylvania for
the 7 and 9 watt cfls.  Specify the Accutronic AT7-9/12.  Iota Engineering
also makes several types of 12vdc ballasts for cfls.  In a pinch,
emergency ballasts such as those made by Bodine can be used to operate
cfls, but the output may be reduced.


From hardballer@aol.com Tue May 30 23:17:35 EDT 1995
Article: 2161 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!news.iag.net!usenet.eel.ufl.edu!pacifier!news.alpha.net!uwm.edu!vixen.cso.uiuc.edu!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: hardballer@aol.com (HARDBALLER)
Newsgroups: sci.engr.lighting
Subject: Re: Dimming fluorescent lamps
Date: 29 May 1995 17:31:30 -0400
Organization: America Online, Inc. (1-800-827-6364)
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Reply-To: hardballer@aol.com (HARDBALLER)
NNTP-Posting-Host: newsbf02.mail.aol.com

Many manufacturers make fluorescent dimming gear, but Lutron in
Coopersburg ,PA makes the best there is.  You can get their equipment at
many local electrical distributors. Good luck.


From hardballer@aol.com Tue May 30 23:17:36 EDT 1995
Article: 2162 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!news.iag.net!usenet.eel.ufl.edu!news.mathworks.com!uhog.mit.edu!sgiblab!swrinde!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: hardballer@aol.com (HARDBALLER)
Newsgroups: sci.engr.lighting
Subject: Re: Q: ARCING BETWEEN ELEC. CONTACTS & HOUSING
Date: 29 May 1995 17:43:46 -0400
Organization: America Online, Inc. (1-800-827-6364)
Lines: 11
Sender: root@newsbf02.news.aol.com
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References: <skymed-2405952331330001@blv-pm0-ip2.halcyon.com>
Reply-To: hardballer@aol.com (HARDBALLER)
NNTP-Posting-Host: newsbf02.mail.aol.com

Regarding your arcing problem, it would be clear to anyone who has done
any TIG welding what your problem is...unfortunately you didn't mention
what the distance between contacts is or whether you were operating ac or
dc current. In any case, it would appear that you have created a nearly
optimal environment to strike an arc,ie:  a (grounded?) conductive
enclosure filled with inert gas, containing exposed contacts operating at
sufficient voltage to strike an arc.  Under these conditions, I would
probably recommend in insulating material be positioned between the
contacts and between the contacts and the housing.  Silicone rubber would
be good or Nomex or possibly even Mica.  This way you can retain your
inert gas fill.  Good Luck.


From rod@vlsi4.racal.com Tue May 30 23:17:37 EDT 1995
Article: 2163 of sci.engr.lighting
Newsgroups: sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news.sprintlink.net!news.gate.net!rd1.racal.com!news
From: rod@vlsi4.racal.com (Rod Gotty)
Subject: Laser controller.
Message-ID: <D9EBBo.I6A@rd1.racal.com>
Sender: news@rd1.racal.com
Organization: Racal Datacom
X-Newsreader: Forte Free Agent v0.55
Date: Tue, 30 May 1995 14:37:51 GMT
Lines: 9

I'm looking for help in designing a laser controller for a home
project.  I have a laser and would like to put together a system of
computer controlled mirrors... to allow simple pictures to be drawn.
Does anyone have any ideas on how this can be done practically.  Sure,
I could probably go out and buy something to do this but I would like
to build it myself.  TIA

-Rod



From mark.stephens@gsfc.nasa.gov Tue May 30 23:17:38 EDT 1995
Article: 2164 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!emf.emf.net!overload.lbl.gov!lll-winken.llnl.gov!ames!newsfeed.gsfc.nasa.gov!centauri.hq.nasa.gov!NewsWatcher!user
From: mark.stephens@gsfc.nasa.gov (mark stephens)
Newsgroups: sci.engr.lighting
Subject: Re: Dimming fluorescent lamps
Date: Tue, 30 May 1995 15:04:22 -0400
Organization: code 522, NASA/GSFC
Lines: 16
Message-ID: <mark.stephens-3005951504220001@131.182.102.108>
References: <199505252258.SAA52137@cortez.its.rpi.edu>
NNTP-Posting-Host: 131.182.102.108

What is the "average" cost of these units?  In the aquarium world, a
company called IceCap produces a unit which accepts up to VHO bulbs and
has a dimming capacity.  Cost for 4 bulb unit is about $160-180.  It's
nice in that you can mix standard, HO and VHO bulbs.

I'm very interested in these ballasts for aquarium and terrarium use... it
scares the hell out of the wild life when the "sun" goes off all at once. 
Are they avaliable from my local electrical/lighting distributor?

Also, I would want to connect the dimmer wire to a microprocessor, either
directly or thru an interface circuit.  I get the impression that the
companies want to sell you a dimmer, but do some also publish the specs?

thanks!

mark


From expertlt@aol.com Tue May 30 23:17:39 EDT 1995
Article: 2165 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: expertlt@aol.com (ExpertLt)
Newsgroups: sci.engr.lighting
Subject: Re: Office lighting
Date: 30 May 1995 16:08:23 -0400
Organization: America Online, Inc. (1-800-827-6364)
Lines: 5
Sender: root@newsbf02.news.aol.com
Message-ID: <3qftvn$3mr@newsbf02.news.aol.com>
References: <9505262056.AA20166@dove.nist.gov>
Reply-To: expertlt@aol.com (ExpertLt)
NNTP-Posting-Host: newsbf02.mail.aol.com

Isn't lighting the outside from the inside sort of like RAM Disk as an
installation procedure?   I agree with Naomi.

Deb Witte
The Lighting Group, San Francisco


From penns@Engr.UVic.CA Thu Jul  6 12:09:58 EDT 1995
Article: 2175 of sci.engr.lighting
Newsgroups: sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!cs.utexas.edu!math.ohio-state.edu!scipio.cyberstore.ca!nntp.cs.ubc.ca!news.UVic.CA!uglz!penns
From: penns@Engr.UVic.CA (Peter  Enns)
Subject: lights that automatically track a camera
Message-ID: <1995May31.165422.29323@sol.UVic.CA>
Originator: penns@uglz
Keywords: light, robot, ocean, undersea, submarine
Sender: news@sol.UVic.CA
Nntp-Posting-Host: uglz.uvic.ca
Reply-To: penns@Engr.UVic.CA
Organization: University of Victoria, Victoria, BC, Canada
Date: Wed, 31 May 95 16:54:22 GMT
Lines: 8

I am working on an interesting lighting project.  I have a video camera and two lights.  I want to mount the lights on motors so that they will point wherever the camera "looks".

To make the matter more complicated, the camera and lights will be 3000m below the ocean surface.

Has anyone ever heard of a similar system?





From SBORDER@netins.net Thu Jul  6 12:09:59 EDT 1995
Article: 2176 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!igor.rutgers.edu!newsserver.jvnc.net!news.cac.psu.edu!news.tc.cornell.edu!travelers.mail.cornell.edu!cornellcs!rochester!cantaloupe.srv.cs.cmu.edu!das-news2.harvard.edu!news2.near.net!news.mathworks.com!gatech!news-feed-1.peachnet.edu!news.netins.net!s189.netins.net!SBORDER
From: SBORDER@netins.net (Steven Border)
Newsgroups: sci.engr.lighting
Subject: <AD> New Web Page: Commercial Lighting Supplies
Date: Thu, 1 Jun 1995 15:49:42 cst
Organization: Budget Lighting, Inc.
Lines: 16
Message-ID: <SBORDER.105.00695E65@netins.net>
NNTP-Posting-Host: s189.netins.net
Keywords: lighting,bulbs
X-Newsreader: Trumpet for Windows [Version 1.0 Rev B final beta #1]

        **********We Invite You To A New Web Page***********


Now Commercial, Industrial and Individuals can purchase lighting supplies
     over the web.

Budget Lighting has their complete catalog at this site and more features
are planned in the future.

The URL for this web page is: http://www.netins.net/showcase/lighting/

Comments are welcome:

Steven Border
Budget Lighting, Inc.
sborder@netins.net


From jhburns@kopt0002.delcoelect.com Thu Jul  6 12:10:01 EDT 1995
Article: 2177 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.sprintlink.net!noc.netcom.net!simtel!news1.oakland.edu!newshub.gmr.com!news.delcoelect.com!jhburns
From: jhburns@kopt0002.delcoelect.com (Jeffrey H. Burns)
Newsgroups: sci.engr.lighting
Subject: Re: Laser controller.
Date: 31 May 1995 19:39:12 GMT
Organization: Delco Electronics Corp.
Lines: 20
Distribution: world
Message-ID: <3qigl0$6tc@kocrsv08.delcoelect.com>
References: <D9EBBo.I6A@rd1.racal.com> <3qigfu$6t5@kocrsv08.delcoelect.com>
NNTP-Posting-Host: kobc0002.delcoelect.com
Originator: jhburns@kobc0002



In article <D9EBBo.I6A@rd1.racal.com>, rod@vlsi4.racal.com (Rod Gotty) writes:
> I'm looking for help in designing a laser controller for a home
> project.  I have a laser and would like to put together a system of
> computer controlled mirrors... to allow simple pictures to be drawn.
> Does anyone have any ideas on how this can be done practically.  Sure,
> I could probably go out and buy something to do this but I would like
> to build it myself.  TIA
> 
> -Rod
> 

I once saw a student project that did this.

They used an audio speakers to move the mirrors. One side of the
mirror was connected to a hinge. The other side of the mirror was connected to 
the cone of a speaker. With two mirror they were able to draw letters on
a screen. Of course the mechanical part if this problem is the easy part.
The control sircitry is the hard part


From lidial@ix.netcom.com Thu Jul  6 12:10:03 EDT 1995
Article: 2178 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!hearst.acc.Virginia.EDU!maui.cc.odu.edu!kuroshio.ccpo.odu.edu!xanth.cs.odu.edu!night.primate.wisc.edu!newsspool.doit.wisc.edu!uwm.edu!cs.utexas.edu!swrinde!gatech!news.sprintlink.net!noc.netcom.net!ix.netcom.com!netnews
From: lidial@ix.netcom.com (Lidia LoPinto)
Newsgroups: sci.engr.biomed,sci.engr.chem,sci.engr.civil,sci.engr.control,sci.engr.lighting,sci.engr.manufacturing,sci.engr.mech,sci.engr.metallurgy,sci.engr.safety
Subject: The Engineering Software Exchange, get your free newsletter on the web now.
Date: 1 Jun 1995 04:52:53 GMT
Organization: Netcom
Lines: 29
Distribution: world
Message-ID: <3qjh35$9fa@ixnews4.ix.netcom.com>
NNTP-Posting-Host: ix-wp1-17.ix.netcom.com
Xref: bigblue.oit.unc.edu sci.engr.biomed:4214 sci.engr.chem:7879 sci.engr.civil:8715 sci.engr.control:5616 sci.engr.lighting:2178 sci.engr.manufacturing:5651 sci.engr.mech:14635 sci.engr.metallurgy:1707 sci.engr.safety:547

We got such a great response to the free e-mail newsletter that we
just posted it on the web. It changes every month.

     You get to it by:

     http://www.engineers.com/ese/ese.html

Once you are there, check out our directory and e-mail newsletter
and click on FREE newsletter, to download a newsletter you'll
see on-line.  Don't forget to save it or print it. 

Why The Engineering Software Exchange?

Have you ever had to wear a multidisciplinary hat? 
What do you do if you are not familiar with a calculation
because it is not your discipline and you can not get help?
You turn to a computer program.  This is why I started
The Engineering Software Exchange in 1980.  Because
when you need help fast, where do you find programs in
other disciplines or your own discipline? 
Well, now there is a place, and that is ESE.
                
Hope you like our new site.

Thanks, Lidia LoPinto, Founder
lidial@ix.netcom.com

-----------------------------------------------------------------
ESE ESE ESE -- THE ENGINEERING SOFTWARE EXCHANGE -- ESE ESE ESE  


From moore@teleport.com Thu Jul  6 12:10:04 EDT 1995
Article: 2179 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!taco.cc.ncsu.edu!gatech!news.sprintlink.net!psgrain!nntp.teleport.com!usenet
From: moore@teleport.com (Dustin Moore)
Newsgroups: sci.engr.lighting
Subject: Re: Laser controller.
Date: Thu, 01 Jun 1995 02:14:40 GMT
Organization: Teleport - Portland's Public Access (503) 220-1016
Lines: 35
Message-ID: <3qjbcv$55f@maureen.teleport.com>
References: <D9EBBo.I6A@rd1.racal.com> <3qigfu$6t5@kocrsv08.delcoelect.com> <3qigl0$6tc@kocrsv08.delcoelect.com>
NNTP-Posting-Host: ip-pdx3-31.teleport.com
X-Newsreader: Forte Free Agent v0.55

jhburns@kopt0002.delcoelect.com (Jeffrey H. Burns) wrote:



>In article <D9EBBo.I6A@rd1.racal.com>, rod@vlsi4.racal.com (Rod Gotty) writes:
>> I'm looking for help in designing a laser controller for a home
>> project.  I have a laser and would like to put together a system of
>> computer controlled mirrors... to allow simple pictures to be drawn.
>> Does anyone have any ideas on how this can be done practically.  Sure,
>> I could probably go out and buy something to do this but I would like
>> to build it myself.  TIA
>> 
>> -Rod
>> 

>I once saw a student project that did this.

>They used an audio speakers to move the mirrors. One side of the
>mirror was connected to a hinge. The other side of the mirror was connected to 
>the cone of a speaker. With two mirror they were able to draw letters on
>a screen. Of course the mechanical part if this problem is the easy part.
>The control sircitry is the hard part

..Um...no....you cannna not do dat wit a speaker....

It's true you can make cool abstract patterns, but in order to create
images/lissagous patterns you need a set of galvenometers, which are
little solinoid/meter like things with mirrors mounted on the end.
With two of them you have x/y and you use that to move the beam
around.  Find a laser display catalog for more information. Else
fails, get a book, there are a lot of them out there.


Dustin Moore moore@teleport.com http://www.teleport.com/~moore 



From lamptech@panix.com Thu Jul  6 12:10:06 EDT 1995
Article: 2180 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!newsxfer.itd.umich.edu!zip.eecs.umich.edu!panix!not-for-mail
From: lamptech@panix.com (Lamp Technology)
Newsgroups: sci.engr.lighting
Subject: Re: 'PL Type' fluorescent replacement lamps
Date: 2 Jun 1995 13:51:07 -0400
Organization: PANIX Public Access Internet and Unix, NYC
Lines: 28
Message-ID: <3qnj2b$qr9@panix.com>
References: <3pkt9e$7lu@newsbf02.news.aol.com> <3q9shv$mue@newsbf02.news.aol.com> <SBORDER.94.01159BCD@netins.net>
X-Newsreader: TIN [version 1.2 PL2]

Steven Border (SBORDER@netins.net) wrote:
: You might also try using Panasonic EFT or EFG (globe). 

: They are much smaller than the philips SL-18 and are electronic as well as 
: enclosed. 

: Call them at:  800-245-5874
: E-mail at: Sborder@netins.net
: Or visit their web page: http://www.netins.net/showcase/lighting/


I believe these lamps were discontinued by Panasonic although there may 
be some out there in circulation. Check it out. Philips line of Earth 
Lights (energy saving lamps series) are better I think. If you would like 
specs on the whole Philips series e-mail me at lamptech@panix.com. I can 
fax or mail what you need!


Janet Connolly


-------------------------------------------
 Janet Connolly      Lamp Technology, Inc.
 lamptech@panix.com    1-800-KEEP-LIT
  "We a have bulb for every socket"
  http://www.webscope.com/lamptech/
-------------------------------------------



From penns@Engr.UVic.CA Mon Jul 31 16:36:01 EDT 1995
Article: 2175 of sci.engr.lighting
Newsgroups: sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!cs.utexas.edu!math.ohio-state.edu!scipio.cyberstore.ca!nntp.cs.ubc.ca!news.UVic.CA!uglz!penns
From: penns@Engr.UVic.CA (Peter  Enns)
Subject: lights that automatically track a camera
Message-ID: <1995May31.165422.29323@sol.UVic.CA>
Originator: penns@uglz
Keywords: light, robot, ocean, undersea, submarine
Sender: news@sol.UVic.CA
Nntp-Posting-Host: uglz.uvic.ca
Reply-To: penns@Engr.UVic.CA
Organization: University of Victoria, Victoria, BC, Canada
Date: Wed, 31 May 95 16:54:22 GMT
Lines: 8

I am working on an interesting lighting project.  I have a video camera and two lights.  I want to mount the lights on motors so that they will point wherever the camera "looks".

To make the matter more complicated, the camera and lights will be 3000m below the ocean surface.

Has anyone ever heard of a similar system?





From SBORDER@netins.net Mon Jul 31 16:36:02 EDT 1995
Article: 2176 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!igor.rutgers.edu!newsserver.jvnc.net!news.cac.psu.edu!news.tc.cornell.edu!travelers.mail.cornell.edu!cornellcs!rochester!cantaloupe.srv.cs.cmu.edu!das-news2.harvard.edu!news2.near.net!news.mathworks.com!gatech!news-feed-1.peachnet.edu!news.netins.net!s189.netins.net!SBORDER
From: SBORDER@netins.net (Steven Border)
Newsgroups: sci.engr.lighting
Subject: <AD> New Web Page: Commercial Lighting Supplies
Date: Thu, 1 Jun 1995 15:49:42 cst
Organization: Budget Lighting, Inc.
Lines: 16
Message-ID: <SBORDER.105.00695E65@netins.net>
NNTP-Posting-Host: s189.netins.net
Keywords: lighting,bulbs
X-Newsreader: Trumpet for Windows [Version 1.0 Rev B final beta #1]

        **********We Invite You To A New Web Page***********


Now Commercial, Industrial and Individuals can purchase lighting supplies
     over the web.

Budget Lighting has their complete catalog at this site and more features
are planned in the future.

The URL for this web page is: http://www.netins.net/showcase/lighting/

Comments are welcome:

Steven Border
Budget Lighting, Inc.
sborder@netins.net


From jhburns@kopt0002.delcoelect.com Mon Jul 31 16:36:03 EDT 1995
Article: 2177 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.sprintlink.net!noc.netcom.net!simtel!news1.oakland.edu!newshub.gmr.com!news.delcoelect.com!jhburns
From: jhburns@kopt0002.delcoelect.com (Jeffrey H. Burns)
Newsgroups: sci.engr.lighting
Subject: Re: Laser controller.
Date: 31 May 1995 19:39:12 GMT
Organization: Delco Electronics Corp.
Lines: 20
Distribution: world
Message-ID: <3qigl0$6tc@kocrsv08.delcoelect.com>
References: <D9EBBo.I6A@rd1.racal.com> <3qigfu$6t5@kocrsv08.delcoelect.com>
NNTP-Posting-Host: kobc0002.delcoelect.com
Originator: jhburns@kobc0002



In article <D9EBBo.I6A@rd1.racal.com>, rod@vlsi4.racal.com (Rod Gotty) writes:
> I'm looking for help in designing a laser controller for a home
> project.  I have a laser and would like to put together a system of
> computer controlled mirrors... to allow simple pictures to be drawn.
> Does anyone have any ideas on how this can be done practically.  Sure,
> I could probably go out and buy something to do this but I would like
> to build it myself.  TIA
> 
> -Rod
> 

I once saw a student project that did this.

They used an audio speakers to move the mirrors. One side of the
mirror was connected to a hinge. The other side of the mirror was connected to 
the cone of a speaker. With two mirror they were able to draw letters on
a screen. Of course the mechanical part if this problem is the easy part.
The control sircitry is the hard part


From lidial@ix.netcom.com Mon Jul 31 16:36:05 EDT 1995
Article: 2178 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!hearst.acc.Virginia.EDU!maui.cc.odu.edu!kuroshio.ccpo.odu.edu!xanth.cs.odu.edu!night.primate.wisc.edu!newsspool.doit.wisc.edu!uwm.edu!cs.utexas.edu!swrinde!gatech!news.sprintlink.net!noc.netcom.net!ix.netcom.com!netnews
From: lidial@ix.netcom.com (Lidia LoPinto)
Newsgroups: sci.engr.biomed,sci.engr.chem,sci.engr.civil,sci.engr.control,sci.engr.lighting,sci.engr.manufacturing,sci.engr.mech,sci.engr.metallurgy,sci.engr.safety
Subject: The Engineering Software Exchange, get your free newsletter on the web now.
Date: 1 Jun 1995 04:52:53 GMT
Organization: Netcom
Lines: 29
Distribution: world
Message-ID: <3qjh35$9fa@ixnews4.ix.netcom.com>
NNTP-Posting-Host: ix-wp1-17.ix.netcom.com
Xref: bigblue.oit.unc.edu sci.engr.biomed:4214 sci.engr.chem:7879 sci.engr.civil:8715 sci.engr.control:5616 sci.engr.lighting:2178 sci.engr.manufacturing:5651 sci.engr.mech:14635 sci.engr.metallurgy:1707 sci.engr.safety:547

We got such a great response to the free e-mail newsletter that we
just posted it on the web. It changes every month.

     You get to it by:

     http://www.engineers.com/ese/ese.html

Once you are there, check out our directory and e-mail newsletter
and click on FREE newsletter, to download a newsletter you'll
see on-line.  Don't forget to save it or print it. 

Why The Engineering Software Exchange?

Have you ever had to wear a multidisciplinary hat? 
What do you do if you are not familiar with a calculation
because it is not your discipline and you can not get help?
You turn to a computer program.  This is why I started
The Engineering Software Exchange in 1980.  Because
when you need help fast, where do you find programs in
other disciplines or your own discipline? 
Well, now there is a place, and that is ESE.
                
Hope you like our new site.

Thanks, Lidia LoPinto, Founder
lidial@ix.netcom.com

-----------------------------------------------------------------
ESE ESE ESE -- THE ENGINEERING SOFTWARE EXCHANGE -- ESE ESE ESE  


From moore@teleport.com Mon Jul 31 16:36:06 EDT 1995
Article: 2179 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!taco.cc.ncsu.edu!gatech!news.sprintlink.net!psgrain!nntp.teleport.com!usenet
From: moore@teleport.com (Dustin Moore)
Newsgroups: sci.engr.lighting
Subject: Re: Laser controller.
Date: Thu, 01 Jun 1995 02:14:40 GMT
Organization: Teleport - Portland's Public Access (503) 220-1016
Lines: 35
Message-ID: <3qjbcv$55f@maureen.teleport.com>
References: <D9EBBo.I6A@rd1.racal.com> <3qigfu$6t5@kocrsv08.delcoelect.com> <3qigl0$6tc@kocrsv08.delcoelect.com>
NNTP-Posting-Host: ip-pdx3-31.teleport.com
X-Newsreader: Forte Free Agent v0.55

jhburns@kopt0002.delcoelect.com (Jeffrey H. Burns) wrote:



>In article <D9EBBo.I6A@rd1.racal.com>, rod@vlsi4.racal.com (Rod Gotty) writes:
>> I'm looking for help in designing a laser controller for a home
>> project.  I have a laser and would like to put together a system of
>> computer controlled mirrors... to allow simple pictures to be drawn.
>> Does anyone have any ideas on how this can be done practically.  Sure,
>> I could probably go out and buy something to do this but I would like
>> to build it myself.  TIA
>> 
>> -Rod
>> 

>I once saw a student project that did this.

>They used an audio speakers to move the mirrors. One side of the
>mirror was connected to a hinge. The other side of the mirror was connected to 
>the cone of a speaker. With two mirror they were able to draw letters on
>a screen. Of course the mechanical part if this problem is the easy part.
>The control sircitry is the hard part

..Um...no....you cannna not do dat wit a speaker....

It's true you can make cool abstract patterns, but in order to create
images/lissagous patterns you need a set of galvenometers, which are
little solinoid/meter like things with mirrors mounted on the end.
With two of them you have x/y and you use that to move the beam
around.  Find a laser display catalog for more information. Else
fails, get a book, there are a lot of them out there.


Dustin Moore moore@teleport.com http://www.teleport.com/~moore 



From lamptech@panix.com Mon Jul 31 16:36:07 EDT 1995
Article: 2180 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!newsxfer.itd.umich.edu!zip.eecs.umich.edu!panix!not-for-mail
From: lamptech@panix.com (Lamp Technology)
Newsgroups: sci.engr.lighting
Subject: Re: 'PL Type' fluorescent replacement lamps
Date: 2 Jun 1995 13:51:07 -0400
Organization: PANIX Public Access Internet and Unix, NYC
Lines: 28
Message-ID: <3qnj2b$qr9@panix.com>
References: <3pkt9e$7lu@newsbf02.news.aol.com> <3q9shv$mue@newsbf02.news.aol.com> <SBORDER.94.01159BCD@netins.net>
X-Newsreader: TIN [version 1.2 PL2]

Steven Border (SBORDER@netins.net) wrote:
: You might also try using Panasonic EFT or EFG (globe). 

: They are much smaller than the philips SL-18 and are electronic as well as 
: enclosed. 

: Call them at:  800-245-5874
: E-mail at: Sborder@netins.net
: Or visit their web page: http://www.netins.net/showcase/lighting/


I believe these lamps were discontinued by Panasonic although there may 
be some out there in circulation. Check it out. Philips line of Earth 
Lights (energy saving lamps series) are better I think. If you would like 
specs on the whole Philips series e-mail me at lamptech@panix.com. I can 
fax or mail what you need!


Janet Connolly


-------------------------------------------
 Janet Connolly      Lamp Technology, Inc.
 lamptech@panix.com    1-800-KEEP-LIT
  "We a have bulb for every socket"
  http://www.webscope.com/lamptech/
-------------------------------------------



From widevo Mon Jul 31 16:36:08 EDT 1995
Article: 2181 of sci.engr.lighting
Newsgroups: sci.engr.lighting
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From: widevo ()
Subject: Lighting Design Software
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Does anyone know where on the web I can find lighting design software
for DOS or Windows?

ffmmff@mixcom.com



From steveu@usgp3.ih.att.com Mon Jul 31 16:36:09 EDT 1995
Article: 2182 of sci.engr.lighting
Newsgroups: sci.engr.lighting,sci.engr.manufacturing,sci.physics.electromag,sci.energy,sci.engr
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From: steveu@usgp3.ih.att.com (sp uthuppan)
Subject: Re: Converting Diesel/Steam Locomotives to Mini Power Plants (Generators)
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Xref: bigblue.oit.unc.edu sci.engr.lighting:2182 sci.engr.manufacturing:5665 sci.physics.electromag:4569 sci.energy:32648 sci.engr:15576

In article <3petsg$or8@aud1.aud.auc.dk>,
Poul Alberg Ostergaard <poul@i4.auc.dk> wrote:
>In article <3pcvlr$4bu@misc1.microserve.net>, john.levin@paonline.com 
>says...
>>
>>Diesel locomotives are already generators (the engine turns a generator 
>>which feeds electric power to the wheels.) -- 
>
>I know that is the case for Northern countries, but is it also the case
>in 3rd world countries (I know one diesel train in Ecuador which I 
>_bet_ did _not_ use a generator).
>

The diesel locomotives extensively used in India are diesel-electric.
Now, India is a 3rd or 2nd world, that's another issue...



From parapsycho@aol.com Mon Jul 31 16:36:10 EDT 1995
Article: 2183 of sci.engr.lighting
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From: parapsycho@aol.com (Parapsycho)
Newsgroups: sci.engr.lighting
Subject: Re: Blue LEDs
Date: 1 Jun 1995 11:57:53 -0400
Organization: America Online, Inc. (1-800-827-6364)
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A company called Gillway (I believe that's how you spell it) has white and
blue LED's  I will post the address and phone number when I get it.

Cya!

Mike
Mike Parker


From hardballer@aol.com Mon Jul 31 16:36:11 EDT 1995
Article: 2184 of sci.engr.lighting
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From: hardballer@aol.com (HARDBALLER)
Newsgroups: sci.engr.lighting
Subject: Re: Dimming fluorescent lamps
Date: 2 Jun 1995 17:16:42 -0400
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Lutron makes a very nice infrared remote control for use with their
dimming systems.  The Ranax remote dimming control is compatible with many
of their fluorescent dimming ballasts.


From db16696@navix.com Mon Jul 31 16:36:12 EDT 1995
Article: 2185 of sci.engr.lighting
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From: db16696@navix.com (Doug Bell)
Newsgroups: sci.engr.lighting
Subject: International Dark-Sky Assocociation
Date: Fri, 02 Jun 95 20:02:26 GMT
Organization: Lincoln Telephone
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>Philip Decker (pdecker@lds.loral.com) wrote:
>: I hope all of you involved in outdoor lighting are
>: supporting members of the International Dark-Sky
>: Association (IDA).  Otherwise, the day will come
>: when there are no urban residents who remember
>: seeing the stars.
>
>regarding the IDA....how about some info on that? I would be very
>interested in finding out more about it!
>
>Janet Connolly

(Objective information follows)

    The IDA is a non-profit organization dedicated to promoting quality
outdoor lighting and preserving the night sky.  Its premise is that the
night sky is intrinsically beautiful and worth preserving.  It also holds
that quality lighting is both safer (due to better light values and lower
glare), cheaper (due to more efficient lamps and less wasted light), and less
obtrusive.  The group was started by professional and amateur astronomers
but now includes many illumination professionals and members of the general
public.

    The IDA is a great source of information regarding outdoor illumination
and the effects of wasted light, glare, light trespass, and skyglow.  It is also
involved in setting community standards for lighting design and establishing
building codes and ordinances to enforce them.  The IDA sponsors occasional
meetings, a newsletter, an information database, and supports a WWW home
page at:

	http://cfa-www.harvard.edu/"graff/nelpag/ida/IDA1.HTML  (whew!)

(IDA member opinion follows)

    IDA is doing a lot of good work at making our communities safer and
more pleasant places to live.  That the public also supports these issues
is shown by the number of lighting suppliers and commercial developers
(particularly those trying to get approval to build near residential areas)
who are getting competitive advantage by providing and using quality
lighting systems.

   This may actually sound more involved than it is.  In practice this
means that lighting systems should be designed, not just installed.
They should be fully shielded to keep the light where it's wanted, timed
to provide light only when wanted, sized to use only as much as needed,
and selected to provide the appropriate color rendition.  The end result
is an illumination system with pleasing uniformity and color, little trespass
and glare, good visibility, and low lifetime costs.

   I would expect a lighting professional to be aware of these issues even
if their clients are not. I would hope that he/she would consider it a
professional's responsibility to incorporate them into his/her lighting
plans.

    You should support IDA.  The memberships are cheap, the information is
free.  They are some of the biggest supporters of professionally designed
lighting I can think of.  The also have lots of experience selling good
lighting systems to skeptical audiences (your potential clients!)

    (Disclosure.  I am a member of IDA and an amateur astronomer.  I
am not a lighting engineer and am not associated with any lighting
supplier, installer, or designer.)


Best wishes,
Doug Bell	DB16696@ltec.net


Doug Bell               Opinions expressed are strictly my own.
db16696@ltec.com


From cmc@wtae.com Mon Jul 31 16:36:13 EDT 1995
Article: 2517 of sci.engr.lighting
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Subject: Sister Mary Rena
Newsgroups: sci.engr.lighting
From: cmc@wtae.com
Date: Tue, 25 Jul 95 17:57:24 EST
Message-ID: <7929-288848301@wtae.com>
Organization: WESTMORELAND ONLINE OIS
Lines: 6



Greetings from CMC ( Carl ). Recieved your E- Mail this am.

--
westmoreland online 


From mkc3@ix.netcom.com Mon Jul 31 16:36:15 EDT 1995
Article: 2518 of sci.engr.lighting
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From: mkc3@ix.netcom.com (Kirke Coney )
Newsgroups: sci.engr.lighting
Subject: Re: Looking for 35W HPS Yard Light, Mounting Height 5-8 ft.
Date: 25 Jul 1995 22:14:22 GMT
Organization: Netcom
Lines: 17
Distribution: world
Message-ID: <3v3qbu$r68@ixnews3.ix.netcom.com>
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NNTP-Posting-Host: ix-aus2-01.ix.netcom.com

In <3v3e2v$ecb@nntp.ucs.ubc.ca> ifisher@unixg.ubc.ca (Ian Fisher)
writes: 
>

>I hope the church realises this will make any vegetation they have
>look dead and the low wattage will further emphasise the hellish
>appearance of the light. A church a few blocks from me recently
>replaced some servicable looking HPS wall-mounted lights with halogen
>floods. I didn't think the gloomy HPS light was suitable for lighting
>a chruch and it would appear that my opinion was not unique.

I have seen several HPS lit churches, and none of them look "hellish".
I think the key feature is a quality luminaire. A good posttop is made
by McGraw Edison.  It is a cutoff, but looks like a traditional gas
light.  It is cataloged as a 50 watt unit, but I am sure a 35w would be
no trouble.  McGraw also makes the pole.



From schulman@madmax.hrl.hac.com Mon Jul 31 16:36:16 EDT 1995
Article: 2519 of sci.engr.lighting
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From: Joel Schulman <schulman@madmax.hrl.hac.com>
Newsgroups: sci.engr.lighting
Subject: Looking for xenon lamps
Date: 25 Jul 1995 23:54:20 GMT
Organization: Hughes Aircraft Company
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Can someone recommend a place to find low cost high quality
short arc spherical xenon lamps? Wattage would be from 250
to 3000 watts.

Thanks very much.

Joel
schulman@madmax.hrl.hac.com



From oksi@cerfnet.com Mon Jul 31 16:36:18 EDT 1995
Article: 2520 of sci.engr.lighting
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From: Nahum Gat <oksi@cerfnet.com>
Newsgroups: sci.engr.lighting
Subject: Re: Green Bldg Call for Papers
Date: 26 Jul 1995 05:09:56 GMT
Organization: Opto-Knowledge Systems, Inc.
Lines: 7
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To: cphillips@energy.commerce.state.nc.us

TechExpo at    http://www.techexpo.com/
is now posting technical ocnferences.  The site is visited by hundreds of 
users per day from all over.  Posting conferences is free.  Please check 
it out and fill out the forms there.
Regards,
Nahum Gat



From canoe@astral.magic.ca Mon Jul 31 16:36:19 EDT 1995
Article: 2521 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!hearst.acc.Virginia.EDU!portal.gmu.edu!europa.chnt.gtegsc.com!news.mathworks.com!uhog.mit.edu!rutgers!utcsri!news.sygma.net!magic-toronto!pm1pool17.magic.ca!user
From: canoe@astral.magic.ca (Henry & Doreen Chow)
Newsgroups: sci.engr.lighting
Subject: pure sunlight via fibre optic cables
Date: Tue, 25 Jul 1995 23:16:35 -0500
Organization: Magic Online Services Toronto Inc.
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NNTP-Posting-Host: pm1pool17.magic.ca

I just read Frank Ogden's "The Last Book You'll Ever Read", and I came
across a reference to how the Japanese are collecting sunlight with
Fresnel lenses that track the sun's movements, then the sunlight is
flitered to eliminate UV rays, and is subjected to a "light shift" which
removes the red part of the spectrum, allowing only pure sunlight to reach
the indoors.  He talks about how "they" can grow 15 foot high tomato
plants from a single seed that bears thousands of tomatos.  Science
fiction, or is this really possible?  Can anyone point me to some Internet
resources that will shed some more light (so to speak)?  Thanks.
Henry


From daveoesper@aol.com Mon Jul 31 16:36:20 EDT 1995
Article: 2522 of sci.engr.lighting
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From: daveoesper@aol.com (DaveOesper)
Newsgroups: sci.engr.lighting
Subject: Re: Looking for 35W HPS Yard Light, Mounting Height 5-8 ft.
Date: 26 Jul 1995 00:05:14 -0400
Organization: America Online, Inc. (1-800-827-6364)
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Ian Fisher writes:

>I hope the church realises this will make any vegetation they have
>look dead and the low wattage will further emphasise the hellish
>appearance of the light. A church a few blocks from me recently
>replaced some servicable looking HPS wall-mounted lights with halogen
>floods. I didn't think the gloomy HPS light was suitable for lighting
>a chruch and it would appear that my opinion was not unique.

Good thing I didn't say anything about how much I like LPS for many
outdoor applications!  Personally, I don't like full-spectrum white light
sources such as metal halide for most outdoor lighting applications
because of their  "harsh" appearance and their negative effect on dark
adaptation (rods are blue-sensitive).  Perhaps halogen is a little better
in this respect.

Kirke Coney writes:

>I have seen several HPS lit churches, and none of them look "hellish".  I
>think the key feature is a quality luminaire.

AMEN!

David Oesper
Outdoor Lighting Associates, Inc.
Ames, Iowa  USA


From seanjg@hamlet.umd.edu Mon Jul 31 16:36:21 EDT 1995
Article: 2523 of sci.engr.lighting
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From: seanjg@hamlet.umd.edu (Gallagher - Sean J.)
Newsgroups: sci.engr.lighting
Subject: Re: electronic ballasts
Date: 26 Jul 1995 18:02:02 GMT
Organization: University of Maryland, College Park
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X-Newsreader: TIN [version 1.2 PL1]

Kirke Coney (mkc3@ix.netcom.com) wrote:
: I went to a Sylvania/Osram seminar yesterday. Very nice presentation.
: Any opinions out there of the merits of rapid start vs instant start
: ballasts?  They make a good case for instant start, but then that's all
: they offer. 

>From  my limited experience, I will pass on what I have heard.  It may 
only be marketing fodder by those that make the rapid start.

>From  what I've heard, the instant start are harder on the lamps 
(cathodes) and cause the lamps to have a shorter life than if a rapid 
start ballast was used.  The rapid start ballast are alittle easier on 
the lamps yielding longer lamp life.

I'll stand by to see more educated responses.  This is a question I'd 
like to be more informed on.


From mkc3@ix.netcom.com Mon Jul 31 16:36:22 EDT 1995
Article: 2524 of sci.engr.lighting
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From: mkc3@ix.netcom.com (Kirke Coney )
Newsgroups: sci.engr.lighting
Subject: electronic ballasts
Date: 26 Jul 1995 12:49:47 GMT
Organization: Netcom
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Distribution: world
Message-ID: <3v5dlb$mq6@ixnews2.ix.netcom.com>
NNTP-Posting-Host: ix-aus2-06.ix.netcom.com

I went to a Sylvania/Osram seminar yesterday. Very nice presentation.
Any opinions out there of the merits of rapid start vs instant start
ballasts?  They make a good case for instant start, but then that's all
they offer. 


From blockj@rpi.edu Mon Jul 31 16:36:23 EDT 1995
Article: 2525 of sci.engr.lighting
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From: blockj@rpi.edu (Judith Block)
Newsgroups: sci.engr.lighting
Subject: New lighting publications
Date: 26 Jul 1995 15:47:41 -0400
Organization: NIST
Lines: 37
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <199507261947.PAA19843@goya.its.rpi.edu>
NNTP-Posting-Host: dove.nist.gov


The Lighting Research Center, Rensselaer Polytechnic Institute,
Troy, New York, announces the publication of Lighting Listings, a
236-page directory of publications, research organizations,
educational opportunities, and associations for the lighting
industry.  Originally published in 1992, this edition has been
revised and expanded to include entries from many foreign
countries.  Intended to be used as a quick reference guide, this
directory briefly summarizes pertinent information about an
organization and lists names, addresses, phone numbers, fax
numbers, e-mail addresses and contact names, where known.

Chapter 1, Lighting Publications, categorizes lighting magazines
and journals into English and non-English language serials. Many
new titles have been added as well as information on lighting
databases and the NIST electronic mailing list.  Chapter 2, Research
Organizations, features energy offices an agencies in states with
active energy conservation and lighting efficiency programs. It also
lists federal agencies and nongovernment research organizations.
Chapter 3, Lighting Education Opportunities, includes programs at
colleges and universities; those universities which have research
centers for the study of lighting or related fields or extensive
lighting education programs are described in detail.  Also covered
in this chapter are professional association and manufacturer
seminars, conferences and demonstration centers.  Chapter 4, U.S.
Associations, describes lighting-related associations, which include
trade and professional organizations as well as energy and
environment groups.  Finally, Chapter 5, International Lighting
Education and Research Programs, Associations and Trade Shows
highlights important information about lighting organizations
>from  around the world.

For information on how to obtain Lighting Listings, please contact:
Publications, Lighting Research Center, Rensselaer Polytechnic
Institute, Troy, New York 12180-3590. Phone: 518 276-8716; Fax:
276-2999; e-mail: lrc@rpi.edu.



From blockj@rpi.edu Mon Jul 31 16:36:24 EDT 1995
Article: 2526 of sci.engr.lighting
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From: blockj@rpi.edu (Judith Block)
Newsgroups: sci.engr.lighting
Subject: More lighting publications
Date: 26 Jul 1995 15:52:07 -0400
Organization: NIST
Lines: 26
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <199507261951.PAA20137@goya.its.rpi.edu>
NNTP-Posting-Host: dove.nist.gov


Electrodeless lamps. Intelligent occupancy sensors. Luminous
ceilings. Where can one find information about these and other
issues affecting the future of lighting? Just released is Lighting
Futures, a newsletter published by the Lighting Research Center of
Rensselaer Polytechnic Institute, Troy, New York, which covers
advances in the lighting industry, especially in technologies and
techniques. Each issue of Lighting Futures will carry a feature
article about a significant lighting trend.  Editor Catherine Luo
reports that ongoing depatments will include Flash!, a column
that covers new and upcoming lighting product techniques;
Trade in Flux, which covers the activities of government, nonprofit,
professional and other organizations that can affect the lighting
community; Switched Online, which reviews the lighting resources
on the Internet and other information services; and Reflections, a
forum for members of the lighting trade to express their opinions,
concerns and questions about the future of lighting.

Lighting Futures, sponsored by the U.S. Environmental Protection
Agency, is published six times a year and, for a limited time, is
available free of charge. For a subscription, contact Publications,
Lighting Research Center, Rensselaer Polytechnic Institute, Troy,
New York 12180-3590, tel: (518) 276-8716; fax: (518) 276-2999;
e-mail: lrc@rpi.edu;
World Wide Web: http://www.rpi.edu/dept/lrc/LRC.html.



From charless@crissy.EECS.Berkeley.EDU Mon Jul 31 16:36:26 EDT 1995
Article: 2527 of sci.engr.lighting
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From: charless@crissy.EECS.Berkeley.EDU (Charles R. Sullivan)
Newsgroups: sci.engr.lighting
Subject: Re: Neon Xfmr: electrical model?
Date: 27 Jul 1995 01:17:07 GMT
Organization: University of California, Berkeley
Lines: 18
Message-ID: <3v6pej$2ts@agate.berkeley.edu>
References: <3ugk6q$ntr@locutus.rchland.ibm.com>
NNTP-Posting-Host: crissy.eecs.berkeley.edu

brzozoww@mycroft.endicott.ibm.com (Wesley Brzozowski) writes:

>In trying to use a neon sign transformer for purposes other than its intended

Don't hurt yourself!

>one, I'm trying to understand how it performs the way it does. The internal
>magnetic shunt is there to perform a current limiting function, of course. But
>does the shunt provide an effective series inductance to limit the secondary
>current? Is the effect of the shunt more complex than this? Any enlightenment
>would be appreciated.

Exactly.  If you operate somewhere other than the intended voltage,
frequency, current, you might have parasitic capacitances, and magnetic
saturation to worry about, but those are not essential parts of the
intended function.

Charlie Sullivan


From charless@crissy.EECS.Berkeley.EDU Mon Jul 31 16:36:28 EDT 1995
Article: 2528 of sci.engr.lighting
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From: charless@crissy.EECS.Berkeley.EDU (Charles R. Sullivan)
Newsgroups: sci.engr.lighting
Subject: Re: Fluorescent lighting hints wrap-up
Date: 27 Jul 1995 01:44:12 GMT
Organization: University of California, Berkeley
Lines: 11
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Very nice lighting is possible with electronic ballasts and
rare-earth phosphors in residential applications.  The only
limitation (aside from the skill of the designer) is that 
even compact fluorescents are not very compact sources compared to
tungsten, so you can't get as tightly controlled a beam.  But rarely
will you want that in a residential setting anyway.

Yes, IR interference is a possible problem, but if so change out the one
light that causes the problem.

Charlie Sullivan


From lwilton@BIX.com Mon Jul 31 16:36:30 EDT 1995
Article: 2529 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!uunet!in1.uu.net!news.delphi.com!usenet
From: lwilton@BIX.com (Loren Wilton)
Newsgroups: sci.engr.lighting
Subject: Re: Fiber Optic Backlights? (was Re: electrolumenescense)
Date: 27 Jul 1995 08:43:53 GMT
Organization: Delphi Internet Services Corporation
Lines: 47
Message-ID: <3v7jk9$t92@news2.delphi.com>
References: <joninDC6pGI.4Ls@netcom.com>
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X-Newsreader: NetBix 1.140
X-Newsreader-Author: lwilton@BIX.com (Loren Wilton)
    This message has been posted with development version software.
    If there are any problems with the message format, send me mail.

In article <joninDC6pGI.4Ls@netcom.com>, jonin@netcom.com (Lord Jonin) wrote:
>Loren Wilton (lwilton@BIX.com) blurted:
>
>: (although fiber optic backlights are perhaps more common on LCD panels).
>
>This may be something I am looking for.  Where might I find these type of
>products?
>
>I am bascially looking for backlighting techniques to flood a 1 1/2" circular
>display - and other sizes later.  I havent worked with fiber optics, but I
>
>p.s. most my projects are made for special effects/props.  That is why some
>of them have to be very small, and others have to be very visible. 
>Not knowing the lightsource of the Fiber optic backlight, I though it might
>be cool to attach one/several of the new RGB LEDS to it so I can vary its
>color on the fly.  This might not be feasable depending on how the actual
>light source is rigged on those things.

Again, I don't have references handy, although the same electronics trade
journals will have lots of ads in them for backlights of various kinds.

The basic fiber-optic panel backlight is very similar to what you describe.
It starts with from one to 3 bundles of clear fibers, that are then spread
out to produce a flat layer of fibers.  This is sandwitched between a piece
of clear plex on the front and a piece of something else (probably reflective)
on the back.  You put lightbulbs near the ends of the fiber bundles, and the
result is an evenly distributed light over the panel area.  You put bright,
typically incandescent hallogen lamps at the bundle ends to illuminate the
panel.

A variation is a panel with all of the fibers terminated along the edge.
This kind is illuminated with a linear liight source, typically a flourescent
tube perhaps 4mm in diameter and 2, 4, 6, 9, or so inches long.

If you are doing this backlight as part of a costume, I recommend *against*
using electrolumenscent panel material, even though it is usually flexable.
Disney did this for one of their parades, and had problems with wire abraision
resulting in ocasional shocks to the actors, since this stuff runs on about
130V AC from an inverter.  They went to some form of fiber optic panel that
could be illuminated at a lower voltage.

I don't have any exact references on this, but you could try contacting
Walt Disney World Entertainment Division in Florida and see if you can
find someone willing to talk about their solution.

	Loren
	


From wesb@vnet.ibm.com Mon Jul 31 16:36:31 EDT 1995
Article: 2530 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!ukma!usenet.eel.ufl.edu!news.cybercom.net!news.mathworks.com!uunet!in2.uu.net!portal.austin.ibm.com!bocanews.bocaraton.ibm.com!watnews.watson.ibm.com!locutus.rchland.ibm.com!mycroft.endicott.ibm.com!brzozoww
From: brzozoww@mycroft.endicott.ibm.com (Wesley Brzozowski)
Newsgroups: sci.engr.lighting
Subject: Re: Neon Xfmr: electrical model?
Date: 27 Jul 1995 17:37:18 GMT
Organization: IBM Rochester MN
Lines: 73
Distribution: world
Message-ID: <3v8ise$m31@locutus.rchland.ibm.com>
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NNTP-Posting-Host: mycroft.endicott.ibm.com

In article <3v6pej$2ts@agate.berkeley.edu>, charless@crissy.EECS.Berkeley.EDU (Charles R. Sullivan) writes:
|> brzozoww@mycroft.endicott.ibm.com (Wesley Brzozowski) writes:
|> 
|> >In trying to use a neon sign transformer for purposes other than its intended
|> 
|> Don't hurt yourself!

<sigh> Thanks for the vote of confidence :-). Actually, I've been an electrical
engineer for more than 20 years, and have enough high voltage work under my 
belt to have some chance of survival on this. The use of a neon sign 
transformer is common in certain homebrew electrical projects which tend to
get constructed by rule-of-thumb, rather than any real design. The engineer in
me says that there's gotta be a better way and I'm trying to find it. 

|> >one, I'm trying to understand how it performs the way it does. The internal
|> >magnetic shunt is there to perform a current limiting function, of course. But
|> >does the shunt provide an effective series inductance to limit the secondary
|> >current? Is the effect of the shunt more complex than this? Any enlightenment
|> >would be appreciated.
|> 
|> Exactly.  If you operate somewhere other than the intended voltage,

A comedian, eh? Well, I wouldn't quit that day job just yet! :-).

|> frequency, current, you might have parasitic capacitances, and magnetic
|> saturation to worry about, but those are not essential parts of the
|> intended function.

Aw, c'mon Charlie; I'm looking for some information here. With all due respect,
you're just stating that information exists. I'm sure that there are some
decent numbers available on neon sign transformers, but they're hiding awfully
well from me. Even a couple of excellent technical libraries available to me 
have little more than vague information on the technical details of these
suckers. If you've got something concrete, I'd _really_ be interested 
in hearing what you've got to say. 

Parasitic capacitance will play a considerable part in my results, but I
didn't expect to find anything on that here, as folks using 'em for their
intended purpose are unlikely to need that information. I'm pretty sure I can
get some ballpark measurements on that, but if you have some numbers, I'd be
immensely grateful.

As far as saturation goes, the end use will have a 60 Hz transformer being 
driven at its usual 60 Hz. If there's any way to saturate one considering their 
internal current limiting, (say, with a capacitive load, just to toss out an 
idea) I'd once again be very glad to hear about it.

But my original question, which I guess I can ask again, involves the internal
magnetic shunt. While I've not had the best time finding a basic  analysis of 
a transformer with such a core, one fields text did start with a
transformer/magnetic circuit with a shunt. It then used one of those
"and-then-a-miracle-occurs" handwavings to end up with a model that 
involved the equivalent of series inductance. I'm interested in knowing wether
such a model is realistic for a neon sign transformer, even in its intended 
usage. (I'll deal with the more perverse usages of such a device later on).

I intend to take a lot of data on such a transformer in-situ, and will
be building and refining my own model of the beast, but right now, a little 
preliminary information on the things would be very helpful. I'm doing this 
at my own cost and on my own time, and any hints that would make the journey
a bit easier and less costly to traverse would be immensely appreciated.

Does anyone out there see these things as more than just a black box? (Yeah,
yeah, I've seen blue ones, too. :-)

Wes B.

-- 

*******************************************************************************
*  Wes Brzozowski      *        Nothing is a waste that makes a memory        *
*  wesb@vnet.ibm.com   *                                - Ned Rorem           *
*******************************************************************************


From mjo@nwu.edu Mon Jul 31 16:36:32 EDT 1995
Article: 2531 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!ukma!jobone!newsxfer.itd.umich.edu!gatech!news.mathworks.com!uunet!in2.uu.net!ftpbox!newsfeed.acns.nwu.edu!news.acns.nwu.edu!news	
From: "Michael J. Ostaffe" <mjo@nwu.edu>
Newsgroups: sci.engr.lighting
Subject: Re: electronic ballasts
Date: 27 Jul 1995 05:04:32 GMT
Organization: Northwestern University, Evanston, IL, US
Lines: 37
Message-ID: <3v76p0$si5@news.acns.nwu.edu>
References: <3v5dlb$mq6@ixnews2.ix.netcom.com> <3v5vuq$5ku@hecate.umd.edu>
NNTP-Posting-Host: lucky101.acns.nwu.edu

seanjg@hamlet.umd.edu (Gallagher - Sean J.) wrote:
>
> Kirke Coney (mkc3@ix.netcom.com) wrote:
> : I went to a Sylvania/Osram seminar yesterday. Very nice presentation.
> : Any opinions out there of the merits of rapid start vs instant start
> : ballasts?  They make a good case for instant start, but then that's all
> : they offer. 
> 
>
> 
> From what I've heard, the instant start are harder on the lamps 
> (cathodes) and cause the lamps to have a shorter life than if a rapid 
> start ballast was used.  The rapid start ballast are alittle easier on 
> the lamps yielding longer lamp life.


> 
> The biggest benefit to most instant start ballasts is that they operate
at a lower wattage than do their rapid start cousins with the same light
output.  An Advance 2 lamp F32T8 electronic ballast operates at 58 watts
with .88 ballast factor, and our 2 lamp rapid start operates at 62 watts.

Our four lamp instant start operates at 112watts, where a competiors 4 lamp
rapid starts operate at approx 120W. This could mean over $40 extra energy costs
over the life of the unit.  

If the lamps are turned on once in the morning and turned off at night, there
should be no difference in lamp life between the two starting methods.
If you are using occupancy detectors, you should use rapid start, since instant
starting should reduce lamp life by up to 25%.

Please me if you have any questions.  I hope that this helps.

Mike Ostaffe
Electronic Product Manager
Advance Transformer Co.
mjo@nwu.edu


From jmcvay@comp.uark.edu Mon Jul 31 16:36:33 EDT 1995
Article: 2532 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!hearst.acc.Virginia.EDU!portal.gmu.edu!europa.chnt.gtegsc.com!news.mathworks.com!gatech!paladin.american.edu!news.ecn.uoknor.edu!bubba.ucc.okstate.edu!wizard.uark.edu!comp!jmcvay
From: jmcvay@comp.uark.edu (Jason McVay)
Newsgroups: sci.engr.lighting
Subject: Fiber Optic lighting
Date: 28 Jul 1995 14:28:25 GMT
Organization: University of Arkansas
Lines: 12
Message-ID: <3vas69$2pp@wizard.uark.edu>
NNTP-Posting-Host: comp.uark.edu
Keywords: fiber


A couple of years ago, I saw that a car company was thinking of 
backlighting a car's gauges with a single light bulb by branching optic 
fibers from _one_ lightbulb to the back of the gauges. My question is: 
could this engineering technique be done on a much larger scale and could 
fiber optic lighting 
be used as a primary source of light rather than just backlight? For 
instance, replacing 3 hallway lights with optic fibers branching from 
just one bulb? Could this be done and still retain light quality and 
_save money_?

Jason


From ai641@torfree.net Mon Jul 31 16:36:35 EDT 1995
Article: 2533 of sci.engr.lighting
Newsgroups: sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!usenet.eel.ufl.edu!interlog.com!io.org!torfree!ai641
From: ai641@torfree.net (Gary Chiasson)
Subject: 6 inch black light needed
Message-ID: <DCFtoF.5y0.0.bloor@torfree.net>
Organization: Toronto Free-Net
X-Newsreader: TIN [version 1.2 PL2]
Date: Fri, 28 Jul 1995 17:53:02 GMT
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I am in need of a 6 inch black light.  Where could I find one?  Help!

Gary C.



From hardis@garnet.nist.gov Mon Jul 31 16:36:35 EDT 1995
Article: 2534 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!hearst.acc.Virginia.EDU!portal.gmu.edu!europa.chnt.gtegsc.com!news.mathworks.com!uunet!in2.uu.net!dove.nist.gov!zeolite.nist.gov!user
From: hardis@garnet.nist.gov (Jonathan E. Hardis)
Newsgroups: sci.engr.lighting
Subject: Re: ultraviolet light
Date: Fri, 28 Jul 1995 17:51:42 -0500
Organization: National Institute of Standards & Technology
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References: <DC8tu7.t12@ns1.nodak.edu>
NNTP-Posting-Host: zeolite.nist.gov

In article <DC8tu7.t12@ns1.nodak.edu>, comstock@plains.NoDak.edu (Clay
Comstock) wrote:

> Can anyone tell me what kind of glass or plastic lets uv light through?

That depends on what wavelength band of ultraviolet radiation you have in mind.
Most glasses will transmit reasonably well down to about 300 or 350 nm.
Fused silica (glass) is used for transmission down to about 200 nm.

  - Jonathan


From dhutton@kcp.com Mon Jul 31 16:36:37 EDT 1995
Article: 2535 of sci.engr.lighting
Newsgroups: sci.engr.mech,sci.engr.marine.hydrodynamics,sci.engr.manufacturing,sci.engr.lighting,sci.engr.heat-vent-ac,sci.engr.geomechanics,sci.engr.control,sci.engr.civil,sci.engr.chem,sci.engr.biomed,sci.engr.advanced-tv,sci.energy.hydrogen
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From: dhutton@kcp.com (Dave Hutton)
Subject: Re: www site for engineers and scientists
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In article <3uuk7v$1m3@helena.MT.net>,
   "Nigel Mends, PE" <nmends@mt.net> wrote:
>iain@cssip.levels.unisa.edu.au (Iain Collings) wrote:
>>In article <3tpr8q$pk8@news.vcd.hp.com>, edmoore@vcd.hp.com (Ed Moore) 
writes:
>
>>|> Mosaic.  I fired up my ancient Mosaic and immediately connected to his
>>|> site.  I've tried Netscape serveral more times on the site; it fails 
every
>>|> time.  Mosaic connects every time.
>
>>I tried on Netscape and it worked first time!!!
>
>I don't understand what's going on, but Internet Chameleon Websurfer finds 
this 
>site first time, every time, but I have yet to be able to find the site even 
>once with Netscape.  My ISP claims this is a known problem with Netscape; 
i.e., 
>that it has trouble connecting to some sites.  If anybody could explain it, 
I'd 
>be interested to hear what's going on.
>
>Nigel

I've had this problem with other sites, and the way I corrected it was to 
purge the cache files, where Netscape stores information to help it run 
faster.  Sometimes (I understand) a misconnect can corrupt these, and then 
it'get the same error from then on.  Doing a "reload" is supposed to fix this 
also, but I've not done that.
>
>
>


From seanjg@hamlet.umd.edu Mon Jul 31 16:36:38 EDT 1995
Article: 2536 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!engr.orst.edu!osshe.edu!news.uoregon.edu!gatech!purdue!haven.umd.edu!hecate.umd.edu!hamlet.umd.edu!seanjg
From: seanjg@hamlet.umd.edu (Gallagher - Sean J.)
Newsgroups: sci.engr.lighting
Subject: Re: electronic ballasts
Date: 28 Jul 1995 13:30:46 GMT
Organization: University of Maryland, College Park
Lines: 26
Message-ID: <3vaoq6$m2n@hecate.umd.edu>
References: <3v5dlb$mq6@ixnews2.ix.netcom.com> <3v5vuq$5ku@hecate.umd.edu> <3v76p0$si5@news.acns.nwu.edu>
NNTP-Posting-Host: hamlet.umd.edu
X-Newsreader: TIN [version 1.2 PL1]

Michael J. Ostaffe (mjo@nwu.edu) wrote:

[question of instant start v. rapid start & comments deleted]

: If the lamps are turned on once in the morning and turned off at night, there
: should be no difference in lamp life between the two starting methods.
: If you are using occupancy detectors, you should use rapid start, since instant
: starting should reduce lamp life by up to 25%.

Most T-8 lamps are rated at an average life hours of 20,000 assuming 1 
start every three hours.  Your above statement for same lamp life is 
probably assuming 10-12 hr/start.  At 3hr/start, will using instant start 
electronic ballast result in a low average lamp life than the rated 20,000 
hours?

Will a 3hr/start cycle using rapid start electronic ballasts give you 
more than a 20,000 hour average lamp life?

Thanks for the help.

Sean Gallagher seanjg@umd5.umd.edu

: Mike Ostaffe
: Electronic Product Manager
: Advance Transformer Co.
: mjo@nwu.edu


From billyfish@aol.com Mon Jul 31 16:36:39 EDT 1995
Article: 2537 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!taco.cc.ncsu.edu!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: billyfish@aol.com (BillyFish)
Newsgroups: sci.engr.lighting
Subject: Fluorescents that don't start in the dark
Date: 29 Jul 1995 00:55:40 -0400
Organization: America Online, Inc. (1-800-827-6364)
Lines: 42
Sender: root@newsbf02.news.aol.com
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Reply-To: billyfish@aol.com (BillyFish)
NNTP-Posting-Host: newsbf02.mail.aol.com

I have been having trouble with a fluorescent lamp that uses a
conventional glow tube starter.  It does not start in the dark!  I have
traced the problem back to the starter.

The routine was that I would buy a new starter, get it home, try it out. 
The new starter would work just fine.  The slow starting would then show
up again.  I am too embarassed to tell how long it took before I realized
that the hard starting ocurred only at night.  Of course, the new starter
was first tried during the day with no starting difficulty.

The starters, made or imported by Regent, have about 2mm holes in their
aluminum cases.  At first, I thought that the hole was to allow you to see
whether the glow tube turned on if you had trouble starting.  This hole
allows light into the case to illuminate the electrodes in the
thermostatic glow tube.  Photoelectrons are formed.  These electrons allow
the glow to get started. Letting the light in seems to be the real purpose
of the hole.

I did other tests to confirm the difficult start at night.  For example,
after a minute or so of not starting, I would shine a flashlight on the
starter.  The lamp started in about two seconds.  There never was a
starting problem during the day.

In the old days, there were no holes in the starter cases.  Maybe some
radioactive material was used to help things along.  I don't know.  Now,
if it is really dark, it looks like you have to wait for natural
radioactivity or a cosmic ray if you want your lamp to work.  It may also
be that the glow tubes receive more thorough processing than used to be
the case.  It might be that all sharp points and barnacles eliminate any
possibility that field emission starts the glow.

When I point these problems out to the vendors of starters, I get laughed
at.  I have not received much better treatment from the engineer at
Regent.

What has been the experience of others on this newsgroup?  Are there
brands other than Regent that do not have this problem?

I am new to this newsgroup so this problem may have been discussed before.
 In that case, please be easy on me.

William Buchman, Ph.D., P.E.


From billyfish@aol.com Mon Jul 31 16:36:40 EDT 1995
Article: 2538 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!taco.cc.ncsu.edu!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: billyfish@aol.com (BillyFish)
Newsgroups: sci.engr.lighting
Subject: Re: Neon Lights
Date: 29 Jul 1995 00:55:55 -0400
Organization: America Online, Inc. (1-800-827-6364)
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Sender: root@newsbf02.news.aol.com
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NNTP-Posting-Host: newsbf02.mail.aol.com

Zvonimir Tomislav Hlousek <hlousek@csulb.edu> writes:

>For a while I have been interested in obtaining or having someone make 
>me a small point light source, a mercury discahrge lamp with a spot
>size of 1mm in diameter or less. 

Have you considered a zirconium arc lamp?  I used them many years ago. 
You can project film without a lens.  Well, almost.

William Buchman


From billyfish@aol.com Mon Jul 31 16:36:41 EDT 1995
Article: 2539 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!taco.cc.ncsu.edu!gatech!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: billyfish@aol.com (BillyFish)
Newsgroups: sci.engr.lighting
Subject: Re: Gradually lightning neon. How?
Date: 29 Jul 1995 00:56:09 -0400
Organization: America Online, Inc. (1-800-827-6364)
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In article <DBup2B.Er@ssbunews.ih.att.com>,
0396103-delden <avdelde@hvscc09.ns-nl.att.com> wrote:
>Some time ago I was in a novelty store where they sold some neon things.
>One of the neons was a figure made from glasstube that began burning at
>one end of the tube and then slowly followed the tube (with its lightning
>path) to the other end (and was totaly lit then). Then it made its way
back
>again, slowly fading from fully lit to totaly out. How is this done? I've
>always thought that the ignition of a neon tube was some kind of chain-
>reaction and could not be controlled. After all everything takes place
>between two electrodes.....
>
>In another tube (saw it somewhere else) they were able to send 'light
pearls'
>down the tube. I looked like a continuous stream of small light balls
going
>through the tube. A very cute effect.

Although I do not know how the effect was achieved, one possibility for
the first one is by current control.  In glow discharges, the area of the
glow is roughly proportional to the current.  It is only when the glow
covers the entire cathode, that additional current starts the transition
to arc discharge.

William Buchman


From becnel@crl.com Mon Jul 31 16:36:42 EDT 1995
Article: 2540 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!gatech!howland.reston.ans.net!nntp.crl.com!crl10.crl.com!not-for-mail
From: becnel@crl.com (Robert Becnel)
Newsgroups: alt.cad,comp.robotics,sci.engr.control,comp.software-eng,sci.engr.lighting,alt.cad.autocad
Subject: What is Pro/E
Date: 27 Jul 1995 16:14:16 -0700
Organization: CRL Dialup Internet Access	(415) 705-6060  [Login: guest]
Lines: 11
Message-ID: <3v96k8$po1@crl10.crl.com>
NNTP-Posting-Host: crl10.crl.com
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Xref: bigblue.oit.unc.edu alt.cad:6857 comp.robotics:22067 sci.engr.control:6211 comp.software-eng:30688 sci.engr.lighting:2540 alt.cad.autocad:17719

Could someone send me some information to me on Pro/E?  Who is the 
manuf?  Is there a Web Site?  Email address?  

Please send direct to becnel@crl.com.

Thanks in advance

-- 
************************************************************************
Robert G. Becnel   Email becnel@crl.com   WWW http://www.crl.com/~becnel
************************************************************************


From mjo@nwu.edu Mon Jul 31 16:36:45 EDT 1995
Article: 2541 of sci.engr.lighting
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From: "Michael J. Ostaffe" <mjo@nwu.edu>
Newsgroups: sci.engr.lighting
Subject: Re: electronic ballasts
Date: 29 Jul 1995 15:06:24 GMT
Organization: Northwestern University, Evanston, IL, US
Lines: 43
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seanjg@hamlet.umd.edu (Gallagher - Sean J.) wrote:
>
> Michael J. Ostaffe (mjo@nwu.edu) wrote:
> 
> [question of instant start v. rapid start & comments deleted]
> 
> : If the lamps are turned on once in the morning and turned off at night, there
> : should be no difference in lamp life between the two starting methods.
> : If you are using occupancy detectors, you should use rapid start, since instant
> : starting should reduce lamp life by up to 25%.
> 
> Most T-8 lamps are rated at an average life hours of 20,000 assuming 1 
> start every three hours.  Your above statement for same lamp life is 
> probably assuming 10-12 hr/start.  At 3hr/start, will using instant start 
> electronic ballast result in a low average lamp life than the rated 20,000 
> hours?
> 
> Will a 3hr/start cycle using rapid start electronic ballasts give you 
> more than a 20,000 hour average lamp life?
> 
> Thanks for the help.
> 
> Sean Gallagher seanjg@umd5.umd.edu
> 

At 3 hours per start, the 20,000 hour T8 lamp should last 20,000 hours 
on a rpaid start circuit, and 15,000 hours on an instant start circuit.
This is the 25% lamp life reduction.  If the lamp is on 10-12 hours per day,
lamp life in both scenarios should reach 23-25,000 hours. and at 24 hours
per day, both should last to 30-32,000 hours.

Since 80-90% of all electronic ballasts sold for the rapid start T8 lamps
are instantstart, the lamp manufacturers are begining to improve their lamps
to operate better while being instant started.

There is ongoing research on the effects of lamp life when being started at
15 min or 30 min per start, which may replicate heavy use on occupancy detectors.
I have not seen the a final report on the subject. However, some have indicated 
that life may decrease to 10-12,000 hours on both starting scenario.

Mike Ostaffe
Electronic Product Manager
Advance Transformer Co.


From pmorrow@mbnet.mb.ca Mon Jul 31 16:36:47 EDT 1995
Article: 2542 of sci.engr.lighting
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From: Phil Morrow <pmorrow@mbnet.mb.ca>
Newsgroups: sci.engr.lighting
Subject: Re: electronic ballasts
Date: 30 Jul 1995 01:02:39 GMT
Organization: Phil Morrow Consulting
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"Michael J. Ostaffe" <mjo@nwu.edu> wrote:


>
>At 3 hours per start, the 20,000 hour T8 lamp should last 20,000 hours 
>on a rpaid start circuit, and 15,000 hours on an instant start circuit.
>This is the 25% lamp life reduction.  If the lamp is on 10-12 hours per day,
>lamp life in both scenarios should reach 23-25,000 hours. and at 24 hours
>per day, both should last to 30-32,000 hours.

>
>Mike Ostaffe
>Electronic Product Manager
>Advance Transformer Co.

Let's hope we all have the sense to re-lamp well before these lamps reach 
"25-30,000 hrs."
I don't have a T8 mortality curve in front of me but I wish to make a 
point that when talking about real world lamps that far too few 
installations are re-lamping at the appropriate time to ensure that the 
original spec is met.
Let's stamp out the scourge of 'burnout-only" re-lamping!!!
Just a thought.
Phil Morrow



From jon@cftnet.com Mon Aug 14 13:51:14 EDT 1995
Article: 2605 of sci.engr.lighting
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From: jon@cftnet.com (Jon)
Newsgroups: sci.engr.lighting
Subject: Metal Halide - HID lamps
Date: 9 Aug 1995 01:32:12 GMT
Organization: Your Organization
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	I'm looking for some info on Metal Halide and HID lamps.. does 
anyone know where I can go for some technical information. Gopher, WWW, 
FTP.. Thanks...
	
	Jon



From schmidt@sdd.hp.com Mon Aug 14 13:51:16 EDT 1995
Article: 2607 of sci.engr.lighting
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From: schmidt@sdd.hp.com (Jack Schmidt)
Newsgroups: sci.engr.lighting
Subject: Re: HI-LUX (TM) lamps
Date: 9 Aug 1995 23:18:02 GMT
Organization: Hewlett-Packard, San Diego Division
Lines: 17
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In article <motim.807779117@techunix.technion.ac.il>, motim@techunix.technion.ac.il (Margalit Moti) writes:
|> Hi,
|> 
|>  I would appreciate any information about HI-LUX (TM) lamps
|>  which are made I think by Welch Allyn.  I have been told they
|>  are comparable to Halogen light but are more effiecent hence
|>  run at cooler temperature. 
|> 

HI-Lux lamps are indeed Welch-Allyn products.  They are high intensity
metal halide lamps -- NOT COMPACT FLUORESCENT LAMPS.  Efficiency is
about 55 Lumens/Watt, color temperature (not bulb temperature) is
5500K.  They have a 750 hour lamp and a brighter 300 hour lamp.  The
lamp needs some cooling considerations.

Jack Schmidt



From nstn1168@fox.nstn.ca Mon Aug 14 13:51:17 EDT 1995
Article: 2608 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!ukma!darwin.sura.net!gatech!news.mathworks.com!newsfeed.internetmci.com!hookup!nstn.ns.ca!news
From: nstn2905@fox.nstn.ca (John MacDonald)
Newsgroups: sci.engr.lighting
Subject: web site missing
Date: 9 Aug 1995 18:44:26 GMT
Organization: NSTN Inc. ICS/Windows Dialup User
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I was wondering if anyone could help me.  I was accessing a web site that
was handled by, I think, the lighting resource center.  It had information
on new lighting products coming onto the market.  I have tried to access
this site but it is no longer available.  Is it still operating but at a 
different site?  Has it been permanently closed?

***********************************************
... and crawling on the planet's face
	some insects called the human race...
... lost in time ... lost in space
... and meaning
***********************************************


From nstn1168@fox.nstn.ca Mon Aug 14 13:51:18 EDT 1995
Article: 2609 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!rutgers!ukma!darwin.sura.net!gatech!news.mathworks.com!news.kei.com!newshost.marcam.com!hookup!nstn.ns.ca!news
From: nstn2905@fox.nstn.ca (John MacDonald)
Newsgroups: sci.engr.lighting
Subject: fibre-optic HID lighting
Date: 9 Aug 1995 18:47:22 GMT
Organization: NSTN Inc. ICS/Windows Dialup User
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I seem to recall a company which made a type of fibre optic lighting for 
HID ballasts.  I think that lamp/ballast were located remotely and that
light was transfered by fibre optics.  Anyone have information on this?

***********************************************
... and crawling on the planet's face
	some insects called the human race...
... lost in time ... lost in space
... and meaning
***********************************************


From oksi@cerfnet.com Mon Aug 14 13:51:19 EDT 1995
Article: 2610 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!newshost.marcam.com!usc!news.cerf.net!news
From: Nahum Gat <oksi@cerfnet.com>
Newsgroups: sci.engr.mech,sci.engr.marine.hydrodynamics,sci.engr.manufacturing,sci.engr.lighting,sci.engr.heat-vent-ac,sci.engr.geomechanics,sci.engr.control,sci.engr.civil,sci.engr.chem,sci.engr.biomed,sci.engr.advanced-tv,sci.energy.hydrogen
Subject: Re: Re(2): www site for engineers and scientists
Date: 10 Aug 1995 05:29:02 GMT
Organization: Opto-Knowledge Systems, Inc.
Lines: 8
Message-ID: <40c5eu$gjv@news.cerf.net>
References: <NEWTNews.11668.804751344.oksi@oksi.cerfnet.com> <3tpr8q$pk8@news.vcd.hp.com> <3ufc2v$ph0@vail.levels.unisa.edu.au> <3uuk7v$1m3@helena.MT.net> <DCFxyH.73E@ko.kcp.com> <3vsfv3$f4c@news.cerf.net>
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Xref: bigblue.oit.unc.edu sci.engr.mech:16942 sci.engr.marine.hydrodynamics:532 sci.engr.manufacturing:7002 sci.engr.lighting:2610 sci.engr.heat-vent-ac:1715 sci.engr.geomechanics:245 sci.engr.control:6365 sci.engr.civil:10134 sci.engr.chem:9237 sci.engr.biomed:4669 sci.energy.hydrogen:2609

Of Course the most important point was omitted.  The URL for TechExpo is

http://www.techexpo.com/

Sorry.   :-(

Nahum Gat, Ph.D.



From oksi@cerfnet.com Mon Aug 14 13:51:21 EDT 1995
Article: 2611 of sci.engr.lighting
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From: Nahum Gat <oksi@cerfnet.com>
Newsgroups: sci.engr.civil,sci.engr.mech,sci.engr.marine.hydrodynamics,sci.engr.manufacturing,sci.engr.lighting,sci.engr.heat-vent-ac,sci.engr.geomechanics,sci.engr.control,sci.engr.civil,sci.eng.chem,sci.engr.biomed,sci.energy.hydrogen,sci.engr.advanced-tv
Subject: Re: Web Based Online Database Searching
Date: 10 Aug 1995 05:32:55 GMT
Organization: Opto-Knowledge Systems, Inc.
Lines: 11
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To: don_puffer@corp.dialog.com
Xref: bigblue.oit.unc.edu sci.engr.civil:10135 sci.engr.mech:16943 sci.engr.marine.hydrodynamics:533 sci.engr.manufacturing:7003 sci.engr.lighting:2611 sci.engr.heat-vent-ac:1716 sci.engr.geomechanics:246 sci.engr.control:6366 sci.engr.biomed:4670 sci.energy.hydrogen:2610

Some of what you suggesting may be already happening.  The Smithsonian 
Institute is providing such services (and continuously adding more 
databases).  Their Web site address escaped my mind, but you can find 
them hot-linked at the TechExpo site

http://www.techexpo.com/

under links to academia technology sites

Regards



From pmconsult@mbnet.mb.ca Mon Aug 14 13:51:22 EDT 1995
Article: 2612 of sci.engr.lighting
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From: pmconsult@mbnet.mb.ca (Phil Morrow)
Newsgroups: sci.engr.lighting
Subject: !!Web Site!!: Lighting in Canada
Date: Thu, 10 Aug 1995 01:52:14 GMT
Organization: Phil Morrow Consulting
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An informational page dealing with the lighting industry, with a
distinctive Canadian outlook.
I am looking for news, views, comments, rants, raves and your
participation. 
Send in that article or review that you have always wanted to write.
Publish that technical paper. Send in your company listing or URL. 
IES Section news wanted as well. 
Send in the lighting links you have found or check out ours.
Let's all participate to make this a useful and fun resource.

Lighting in Canada: http://www.mbnet.mb.ca/pmconsult/corner.html

Thanks in advance.
Phil Morrow

"...and remember...keep your stick on the ice!"
                                    -R. Green-



From 74203,3041 @Compuserve.com Mon Aug 14 13:51:24 EDT 1995
Article: 2613 of sci.engr.lighting
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From: 74203,3041 @Compuserve.com (Tom Biebel)
Newsgroups: sci.engr.lighting
Subject: Re: Neon Xfmr: electrical model?
Date: Thu, 10 Aug 1995 05:53:49 GMT
Organization: Plasma Graphics Neon
Lines: 35
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References: <3v8ise$m31@locutus.rchland.ibm.com> <3vhvhf$pmv@news2.delphi.com> <3vmrpd$1mv@agate.berkeley.edu> <3vo1p7$5k5@dub-news-svc-6.compuserve.com> <3vrrs3$d6p@agate.berkeley.edu>
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>But to understand it in terms
>of the lamp being nonlinear, and the transformer being linear, consider
>the fact that stray capacitance and inductance in the transformer or
>associated wiring will have resonant frequencies.  The nonlinearity of
>the lamp can produce some energy at this frequency and get an
>oscillation going, whereas with no lamp, all the energy would be at
>60 Hz and none of this would happen.

OK... I'll buy the resonant frequency as a potental creator of the oscillations
that produce the high frequencies.  What about the magnetic eddie current
"bounce" as I call it?  Like a ball bouncing in a rackeball court the magnetic
flux reacts with the boundary of the core and the air around it.  Is there such
a thing or was I misled on this one over the years?

>the waveforms definitely result from an interaction of lamp and transformer,

Agreed.  I just have developed this "feel" thing for neon transformers after
working with them for 20 years. It is an area of neon that is most often
misunderstood.  Especially that I work with neon installations and associated
interference with audio and video systems.  I find that if the transformers are
loaded with less tubes ( higher current and lower voltage on the secondary )
then I have no problems.  Most of my repair work is from corona effects
destroying insulation and micro-arcs cracking the glass.  Usually from
overloaded systems.  Strangely, the transformer manufacturers recomend that
their transformers be loaded heavier than I load them.  In all this time I have
lost only a few and usually due to tubes that have failed and took the
transformer with it. Perhaps you can tell me how added capacitance in series
with the load ( from high voltage cable in conduit ) would affect these
resonances? 


--
Tom Biebel
"Neoman"



From 74203,3041 @Compuserve.com Mon Aug 14 13:51:25 EDT 1995
Article: 2614 of sci.engr.lighting
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From: 74203,3041 @Compuserve.com (Tom Biebel)
Newsgroups: sci.engr.lighting
Subject: Re: Neon Xfmr: electrical model?
Date: Thu, 10 Aug 1995 06:11:07 GMT
Organization: Plasma Graphics Neon
Lines: 35
Message-ID: <40bf7o$dd@dub-news-svc-6.compuserve.com>
References: <3v8ise$m31@locutus.rchland.ibm.com> <3vhvhf$pmv@news2.delphi.com> <3vmrpd$1mv@agate.berkeley.edu> <3vo1p7$5k5@dub-news-svc-6.compuserve.com> <3vrrs3$d6p@agate.berkeley.edu>
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>But to understand it in terms
>of the lamp being nonlinear, and the transformer being linear, consider
>the fact that stray capacitance and inductance in the transformer or
>associated wiring will have resonant frequencies.  The nonlinearity of
>the lamp can produce some energy at this frequency and get an
>oscillation going, whereas with no lamp, all the energy would be at
>60 Hz and none of this would happen.

OK... I'll buy the resonant frequency as a potental creator of the oscillations
that produce the high frequencies.  What about the magnetic eddie current
"bounce" as I call it?  Like a ball bouncing in a rackeball court the magnetic
flux reacts with the boundary of the core and the air around it.  Is there such
a thing or was I misled on this one over the years?

>the waveforms definitely result from an interaction of lamp and transformer,

Agreed.  I just have developed this "feel" thing for neon transformers after
working with them for 20 years. It is an area of neon that is most often
misunderstood.  Especially that I work with neon installations and associated
interference with audio and video systems.  I find that if the transformers are
loaded with less tubes ( higher current and lower voltage on the secondary )
then I have no problems.  Most of my repair work is from corona effects
destroying insulation and micro-arcs cracking the glass.  Usually from
overloaded systems.  Strangely, the transformer manufacturers recomend that
their transformers be loaded heavier than I load them.  In all this time I have
lost only a few and usually due to tubes that have failed and took the
transformer with it. Perhaps you can tell me how added capacitance in series
with the load ( from high voltage cable in conduit ) would affect these
resonances? 


--
Tom Biebel
"Neoman"



From postmaster@cyber.winweb.com Mon Aug 14 13:51:26 EDT 1995
Article: 2615 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!tank.news.pipex.net!pipex!soap.news.pipex.net!pipex!usenet
From: postmaster@cyber.winweb.com
Newsgroups: sci.engr.lighting
Subject: martin prof u.k.
Date: 10 Aug 1995 17:30:31 GMT
Organization: UnipalmPIPEX server (post doesn't reflect views of UnipalmPIPEX)
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To: rbainbridge@cyber.winweb.com

does anyone know if martin professional have an e.mail adress or a www 
page?
is there any one out there with any info on down loading programmes from 
the martin 2308 lighting controller

thanks for any help



From billyfish@aol.com Mon Aug 14 13:51:27 EDT 1995
Article: 2616 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!usenet.eel.ufl.edu!col.hp.com!sony!sonysjc!sonybc!sonyfwbc!newsjunkie.ans.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: billyfish@aol.com (BillyFish)
Newsgroups: sci.engr.lighting
Subject: Lumens per watt on tungsten/halide
Date: 10 Aug 1995 13:39:16 -0400
Organization: America Online, Inc. (1-800-827-6364)
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What is a ball park number for lumens per watt on a tungsten halide 200 W
projection lamp?

William Buchman


From nstn1168@fox.nstn.ca Mon Aug 14 13:51:29 EDT 1995
Article: 2617 of sci.engr.lighting
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From: nstn2905@fox.nstn.ca (John {Groovy} MacDonald)
Newsgroups: sci.engr.lighting
Subject: Re: P-Spice Model for Ballast
Date: 10 Aug 1995 20:06:29 GMT
Organization: NSTN Inc. ICS/Windows Dialup User
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References: <95080712061004@csupomona.edu>
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X-Newsreader: WinVN 0.92.2

In article <95080712061004@csupomona.edu>, rfsmith@csupomona.edu says:
>
>I would appreciate hearing from anyone who has modeled both a magnetic and
>electronic ballast on PSpic for the differect lamp types.  The model for the
>different lamp types would also be useful.
>
>As a laboratory experience I want students to model a system and the compare
>the model behavior to an actual (real) lighting system.
 
I am also interested in PSPICE models of ballasts and lamps.  If anyone
has this information available would they please post here as well.
Thanks.

***********************************************
... and crawling on the planet's face
	some insects called the human race...
... lost in time ... lost in space
... and meaning
***********************************************


From Tony@pbatech.demon.co.uk Mon Aug 14 13:51:30 EDT 1995
Article: 2618 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!newsfeed.internetmci.com!tank.news.pipex.net!pipex!dispatch.news.demon.net!demon!mail2news.demon.co.uk!pbatech.demon.co.uk!Tony
From: Tony McCollum <Tony@pbatech.demon.co.uk>
Newsgroups: sci.engr.lighting
Subject: Re: Electroluminescent Panels
Date: Thu, 10 Aug 1995 20:58:18 GMT
Organization: Myorganisation
Lines: 12
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Reply-To: Tony@pbatech.demon.co.uk
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Can anyone tell me where I can find suppliers of electroluminescent 
panels.  I'm trying to build a thin transilluminator that avoids using 
fluorescent tubes.

Thanks in advance.

-- 
Tony McCollum



From 102341.3410@CompuServe.COM Mon Aug 14 13:51:31 EDT 1995
Article: 2619 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!newsfeed.internetmci.com!news.compuserve.com!news.production.compuserve.com!news
From: Craig Lewis <102341.3410@CompuServe.COM>
Newsgroups: sci.engr.lighting
Subject: Thunder & Lightning
Date: 11 Aug 1995 16:03:20 GMT
Organization: CompuServe, Inc. (1-800-689-0736)
Lines: 8
Message-ID: <40fv08$ag6$1@mhafm.production.compuserve.com>

  I need help.....

  I would like to have a couple of strobe lights and sync them to 
sound (thunder).  Anybody have any ideas on how to sync them or 
to create something that is made just for this?

  Thanks,
    Craig


From wmdawes@infi.net Mon Aug 14 13:51:33 EDT 1995
Article: 2620 of sci.engr.lighting
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From: wmdawes@infi.net (William Dawes)
Newsgroups: sci.engr.lighting
Subject: COLORING List/Digest and Pages, an invitation
Date: 10 Aug 1995 23:59:20 GMT
Organization: ColorNet Ventures
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                           What is COLORING?

     EVERYTHING you see has been colored by nature, or by coloring
     specialists. Your interest may be casual -- you may just have a
     question for our experts, or you may have a continuing interest in
     these topics. There is no newsgroup for color yet, though there is
     an ongoing effort to form one, to be called sci.engr.color.

     IF you are one of the thousands of specialists, you may want to
     place a bookmark to our pages, and request E-Mail notice of
     significant updates to these pages. Or you may wish to subscribe
     to the COLORING List/Digest and take part in the discussions there.

     You may SUBSCRIBE to the E-Mail COLORING List/Digest or request a 
     SAMPLE DIGEST from COLOR@INFI.NET. Please give your name and write a
     few sentences about your special interest in color.

     If you have WWW access, see the COLORING Pages at

		http://www.infi.net/~color/.

   * The COLORING List and Pages are intended to serve people interested in
     the coloring of paints, plastics, fabrics, inks, ceramics, and other
     materials. The List is published about twice a month in Digest form.
     It was started in April 1995, and has signed about 180 members.

   * Members include 
        o artists, art conservators and restorers;
        o colorists, color technologists, scientists, engineers,
          mathematicians, chemists and spectroscopists;
        o designers, stylists, psychologists and philosophers; and
        o workers in the pigment, dye, paint, plastics, textile, and
          instrument industries.

   * Discussions may include, but are not limited to
        o lighting and filters;
        o vision and perception;
        o instruments, measurement, standards and calibration;
        o color difference metrics and tolerances;
        o color order systems, color naming;
        o pigments and dyes;
        o safety and environmental concers;
        o color stability; and
        o color matching, software, colorant calibration and color lab
          procedures.

   * Employment opportunities for, and profiles from color specialists and
     consultants are welcome. A directory of COLORING People is maintained
     here, which includes all the List subscribers. Anyone who wishes to be
     listed as a specialist in color may apply here.

   * Company profiles will be solicited and published.

   * Announcements of Web pages by individuals and entities serving color
     science and the color industry are encouraged.

   * Announcements of technical meetings of interest to coloring
     specialists are posted.

   * The group will attempt to create archives of important public domain
     spectra and other data, and software for the benefit of color science
     and technology.

-- 
Bill Dawes  wmdawes@infi.net
http://www.infi.net/~wmdawes/ 



From ba6@aol.com Mon Aug 14 13:51:38 EDT 1995
Article: 2621 of sci.engr.lighting
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From: ba6@aol.com (BA6)
Newsgroups: sci.engr.lighting
Subject: Re: Fiber Optic lighting
Date: 11 Aug 1995 13:07:18 -0400
Organization: America Online, Inc. (1-800-827-6364)
Lines: 6
Sender: root@newsbf02.news.aol.com
Message-ID: <40g2o6$phv@newsbf02.news.aol.com>
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Reply-To: ba6@aol.com (BA6)
NNTP-Posting-Host: newsbf02.mail.aol.com

Another company that offers Fiber Optic Lighting and is very concerned
with useable light is Lighting Services Inc (LSI).  The are a manufacturer
in Stony Point, NY.  There phone number is (800)999-9574 or fax
(914)942-2177.

I would suggest that you try here for you Fiber Optic needs.


From ba6@aol.com Mon Aug 14 13:51:40 EDT 1995
Article: 2622 of sci.engr.lighting
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From: ba6@aol.com (BA6)
Newsgroups: sci.engr.lighting
Subject: Re: Sensors to detect human presence(motion detectors)
Date: 11 Aug 1995 13:14:02 -0400
Organization: America Online, Inc. (1-800-827-6364)
Lines: 3
Sender: root@newsbf02.news.aol.com
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NNTP-Posting-Host: newsbf02.mail.aol.com

Lighting Services Inc has developed a motion sensor that they wire to
fixtures in track, accent and display lighting applications.  Perhaps
someone in their design department can guide you further (800)999-9574.


From ba6@aol.com Mon Aug 14 13:51:41 EDT 1995
Article: 2623 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!newsfeed.internetmci.com!news.sprintlink.net!in2.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: ba6@aol.com (BA6)
Newsgroups: sci.engr.lighting
Subject: Re: fibre-optic HID lighting
Date: 11 Aug 1995 13:20:09 -0400
Organization: America Online, Inc. (1-800-827-6364)
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NNTP-Posting-Host: newsbf02.mail.aol.com

Lighting Services Inc (800)999-9574 has and HID light box (150 watts) with
fiber optics available.  Their fax number is (914)942-2177.


From anves@aol.com Mon Aug 14 13:51:42 EDT 1995
Article: 2624 of sci.engr.lighting
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From: anves@aol.com (AnVes)
Newsgroups: sci.engr.lighting
Subject: Re: fibre-optic HID lighting
Date: 12 Aug 1995 10:00:30 -0400
Organization: America Online, Inc. (1-800-827-6364)
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Reply-To: anves@aol.com (AnVes)
NNTP-Posting-Host: newsbf02.mail.aol.com

Most mfrs. of fiber optic cable also build illuminators with HID light
sources.  Fiberstars in Fremont, California manufacturers fiber optic
cable for side-emitting and end-emitting purposes, along with 150w and
400w metal halide illuminators.  These illuminators offer high light
output and long lamp life.  One drawback of metal halide and other HID
lamps is not much red in their color spectrum.  So, even with dichroic
filters, you won't get deep red colors. For more info call 1-800-327-7877.
Regards, 
AnVes@aol.com (Tony Vespoli)


From jareman@aol.com Mon Aug 14 13:51:44 EDT 1995
Article: 2625 of sci.engr.lighting
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From: jareman@aol.com (JAREMAN)
Newsgroups: sci.engr.civil,sci.engr.mech,sci.engr.marine.hydrodynamics,sci.engr.manufacturing,sci.engr.lighting,sci.engr.heat-vent-ac,sci.engr.geomechanics,sci.engr.control,sci.engr.civil,sci.eng.chem,sci.engr.biomed,sci.energy.hydrogen,sci.engr.advanced-tv
Subject: Re: Web Based Online Database Searching
Date: 12 Aug 1995 13:40:59 -0400
Organization: America Online, Inc. (1-800-827-6364)
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Xref: bigblue.oit.unc.edu sci.engr.civil:10180 sci.engr.mech:17038 sci.engr.marine.hydrodynamics:541 sci.engr.manufacturing:7056 sci.engr.lighting:2625 sci.engr.heat-vent-ac:1762 sci.engr.geomechanics:252 sci.engr.control:6404 sci.engr.biomed:4691 sci.energy.hydrogen:2626

I would like to see such a thing come about.  I am a graduate student at
the Univ. of Washington in the Orthopedic Biomechanics Lab at Harborview
Hospital.  It would be very nice to be able to do medline type searches
and even searches of solid biomechanics libraries around the world if they
were available.  The old dial into the university will only last another
couple years for me until I complete my Ph.D. and then when I am no longer
affiliated with the university what do I do.  Since I have america online
and have the ability to get on the web pretty much at will I would
appreciate the opportunity to perform searches on databases such as
medline or others.


From wmdawes@infi.net Mon Aug 14 13:51:45 EDT 1995
Article: 2626 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!taco.cc.ncsu.edu!gatech!news.mathworks.com!news.ultranet.com!news.sprintlink.net!news.infi.net!usenet
From: wmdawes@infi.net (William Dawes)
Newsgroups: sci.engr.lighting
Subject: Re: Color (colour)
Date: 11 Aug 1995 03:30:29 GMT
Organization: ColorNet Ventures
Lines: 58
Message-ID: <40eisl$fo7@allnews.infi.net>
References: <403bun$go3@shiva.usa.net>
NNTP-Posting-Host: h-aqaumarine.richmond.infi.net
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In article <403bun$go3@shiva.usa.net>, hkcastle@usa.net says...
>
>Color (Colour) measurement and tolerancing!
>
>I am seeking information about a color tolerancing system called CMC.
>
>It uses L, c, h color space and establishes ellipsoid tolerances around targets. Ellipsoids get
>larger with higher chroma values simulating human sensitivity.

	Well, of course all color metrics have claimed that they
	simulate human sensitivity. Macadam (from P.G.Nutting's
	observations) established ellipses first, maybe 40 years
	ago. The FMC units were the first practical applications
	of theses when computers became available...

>
>This system is extensively used in the U.K. and E.C. for establishing color specifications (colour
>specifications).  It was developed for textiles and dyes.  It is an ISO standard and mimicked by
>AATCC standards.

	Oh? I thought the AATCC was exactly the same as CMC???

>If you use this system or know where I can talk with someone who does, please drop me a line
>at hkcastle@usa.net

	The CMC system is enjoying widespread use here in the US
	now. Though it was develped by McDonald at Coates using
	threads, and has been adopted by the AATCC here, it is
	also used widely in the plastics industry. When using the
	L:C ratio of 1.3:1, it has been shown to correlate much
	better with visual pass-fail judgements than CIELab 1972 or
	1994, McAdam, or Hunter Lab. (SPE ANTEC, 1995, Mulholland)

	I believe the CMC metric is currently an option on all new
	color measuring equipment. I know Eastman plastics, Hoechst-
	Celanese, and Allied-Signal use it, and I believe Ford
	requires it.

	Often the CIE L, a, and b values are also used by colorists
	used to thinking in red-green and yellow-blue terms, especially
	in the gray and near neutral colors, where they just make more
	sense than dHue and dChroma.

	Just what do you need? I have QuickBasic code that calculates
	it from tristimulus values, if you want to add it to some
	existing software of yours... will be happy to talk to you
	on the phone, or put you in touch with experts who have
	thouroughly evaluated it in plastics.

	Bill



-- 
--Bill Dawes          <wmdawes@infi.net>      804 748-8639--
--http://www.infi.net/~wmdawes/ Personal pages
--http://www.infi.net/~color/   Home of the COLORING pages--



From stevek@netcom.com Mon Aug 14 13:51:46 EDT 1995
Article: 2627 of sci.engr.lighting
Newsgroups: sci.engr.civil,sci.engr.mech,sci.engr.marine.hydrodynamics,sci.engr.manufacturing,sci.engr.lighting,sci.engr.heat-vent-ac,sci.engr.geomechanics,sci.engr.control,sci.engr.civil,sci.eng.chem,sci.engr.biomed,sci.energy.hydrogen,sci.engr.advanced-tv
Path: bigblue.oit.unc.edu!concert!gatech!news.sprintlink.net!howland.reston.ans.net!ix.netcom.com!netcom.com!stevek
From: stevek@netcom.com (Steve M. Kile)
Subject: Re: Web Based Online Database Searching
Message-ID: <stevekDD7oJ7.DA1@netcom.com>
Organization: Allina Health System - Roseville, MN
References: <3vtlqr$k5d@gatekeeper.dialog.com> <40ip3b$j8l@newsbf02.news.aol.com>
Date: Sat, 12 Aug 1995 18:54:43 GMT
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Sender: stevek@netcom21.netcom.com
Xref: bigblue.oit.unc.edu sci.engr.civil:10182 sci.engr.mech:17040 sci.engr.marine.hydrodynamics:542 sci.engr.manufacturing:7058 sci.engr.lighting:2627 sci.engr.heat-vent-ac:1764 sci.engr.geomechanics:254 sci.engr.control:6406 sci.engr.biomed:4693 sci.energy.hydrogen:2628

In article <40ip3b$j8l@newsbf02.news.aol.com> jareman@aol.com (JAREMAN) writes:
>I would like to see such a thing come about.  I am a graduate student at
>the Univ. of Washington in the Orthopedic Biomechanics Lab at Harborview
>Hospital.  It would be very nice to be able to do medline type searches
>and even searches of solid biomechanics libraries around the world if they
>were available.  The old dial into the university will only last another
>couple years for me until I complete my Ph.D. and then when I am no longer
>affiliated with the university what do I do.

Hopefully when you complete your Ph.D you will seek full time employment and
have a suitable income to support paying for a few online searches.  Perhaps
your employer would pick up the cost.

>Since I have america online
>and have the ability to get on the web pretty much at will I would
>appreciate the opportunity to perform searches on databases such as
>medline or others.

No such thing as a free lunch.  Welcome to the real world.
--
Steve M. Kile, CBET                                stevek@netcom.com




From readout@iol.ie Mon Aug 14 13:51:47 EDT 1995
Article: 2628 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!tank.news.pipex.net!pipex!plug.news.pipex.net!pipex!dish.news.pipex.net!pipex!iol!usenet
From: Eoin O'Riain <readout@iol.ie>
Newsgroups: sci.engr.mech,sci.engr.marine.hydrodynamics,sci.engr.manufacturing,sci.engr.lighting,sci.engr.heat-vent-ac,sci.engr.geomechanics,sci.engr.control,sci.engr.civil,sci.engr.chem,sci.engr.biomed,sci.engr.advanced-tv,sci.energy.hydrogen
Subject: Re: Re(2): www site for engineers and scientists
Date: 12 Aug 1995 21:48:49 GMT
Organization: Readout Publications
Lines: 16
Message-ID: <40j7k1$bt8@barnacle.iol.ie>
References: <NEWTNews.11668.804751344.oksi@oksi.cerfnet.com> <3tpr8q$pk8@news.vcd.hp.com> <3ufc2v$ph0@vail.levels.unisa.edu.au> <3uuk7v$1m3@helena.MT.net> <DCFxyH.73E@ko.kcp.com> <3vsfv3$f4c@news.cerf.net> <40c5eu$gjv@news.cerf.net>
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Sorry I missed what this was about.

Could anyone either repost to this group or directly to me at 
readout@iol,ie

Thanks in advance

  Readout Publications, PO Box 3516, Shankill, Co. Dublin, Ireland 
- The Instrumentation & Control Signpost: 
http://www.iol.ie/~readout/index.html
- Compilers and Co-Publishers of the Instrumentation Directory on the 
NET
                       
            Tomhas agus Stiu/radh in E/irinn agus ar fu/d an Domhain




From gdredger@interserf.net Mon Aug 14 13:51:49 EDT 1995
Article: 2629 of sci.engr.lighting
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From: "Gerald E. Greener" <gdredger@interserf.net>
Newsgroups: sci.engr.civil,sci.engr.mech,sci.engr.marine.hydrodynamics,sci.engr.manufacturing,sci.engr.lighting,sci.engr.heat-vent-ac,sci.engr.geomechanics,sci.engr.control,sci.engr.civil,sci.eng.chem,sci.engr.biomed,sci.energy.hydrogen,sci.engr.advanced-tv
Subject: Re: Web Based Online Database Searching
Date: 13 Aug 1995 02:31:14 GMT
Organization: Internet Services Of Fredericksburg
Lines: 10
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I have found more and more reference material online, but have spent some 
time developing my sources.  Some of the government sources are the best. 
You can use your free 90 searches on infosearch to get some good leads.  
I could not afford it on aol and had to change to a private local 
provider. $150 per year for 28.8 dialup.  I am searching for 
environmental, civil engineering and dredging on the inernet and have 
some good sources.

Jerry



From pjm@nando.net Mon Aug 14 13:51:50 EDT 1995
Article: 2630 of sci.engr.lighting
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From: pjm@nando.net (paul milligan)
Newsgroups: sci.engr.civil,sci.engr.mech,sci.engr.marine.hydrodynamics,sci.engr.manufacturing,sci.engr.lighting,sci.engr.geomechanics,sci.engr.control,sci.engr.civil,sci.eng.chem,sci.engr.biomed,sci.energy.hydrogen,sci.engr.advanced-tv
Subject: Re: Web Based Online Database Searching
Date: 13 Aug 1995 03:53:26 GMT
Organization: News & Observer Public Access
Lines: 13
Message-ID: <40jt25$oqk_001@grail403.nando.net>
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Please Please Please !!!!

	Look at the headers on this thread !  This is what they look like ;

sci.engr.civil,sci.engr.mech,sci.engr.marine.hydrodynamics,
sci.engr.manufacturing,sci.engr.lighting,sci.engr.heat-vent-ac,
sci.engr.geomechanics,sci.engr.control,sci.engr.civil,sci.eng.chem,
sci.engr.biomed,sci.energy.hydrogen,sci.engr.advanced-tv

	That's right, you're cross posting to 13 different groups !

PLEASE DELETE SCI.ENGR.HEAT-VENT-AC from this cross-posted thread !!!


From oksi@cerfnet.com Mon Aug 14 13:51:51 EDT 1995
Article: 2631 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!newshost.marcam.com!usc!news.cerf.net!news
From: Nahum Gat <oksi@cerfnet.com>
Newsgroups: sci.engr.mech,sci.engr.marine.hydrodynamics,sci.engr.manufacturing,sci.engr.lighting,sci.engr.heat-vent-ac,sci.engr.geomechanics,sci.engr.control,sci.engr.civil,sci.engr.chem,sci.engr.biomed,sci.engr.advanced-tv,sci.energy.hydrogen
Subject: Re: Re(2): www site for engineers and scientists
Date: Sat, 12 Aug 95 22:35:09 PDT
Organization: CERFnet
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Message-ID: <NEWTNews.32302.808292282.oksi@oksi.cerfnet.com>
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In article <40j7k1$bt8@barnacle.iol.ie>, <readout@iol.ie> writes:

> Sorry I missed what this was about.
> 
> Could anyone either repost to this group or directly to me at 
> readout@iol,ie
> 
> Thanks in advance

The reference is to TechExpo at URL:

http://www.techexpo.com/

A site for Technology and the Engineering Sciences.  It contains:

-Directory of hi-tech companies, products and services
-Directory of technical societies
-Directory of technical trade magazines (non-referred)
-Comprehensive schedule of technology, engineering and science conferences
-Links to gov. and academia technology sites

Have fun
Nahum Gat, Ph.D.





From dave@cmns-moon.think.com Mon Aug 14 13:51:53 EDT 1995
Article: 2632 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!newsfeed.internetmci.com!news.sprintlink.net!in2.uu.net!svc.portal.com!sdd.hp.com!bone.think.com!news!dave
From: dave@cmns-moon.think.com (Dave Mainwaring)
Newsgroups: sci.engr.mech,sci.engr.marine.hydrodynamics,sci.engr.manufacturing,sci.engr.lighting,sci.engr.heat-vent-ac,sci.engr.geomechanics,sci.engr.control,sci.engr.civil,sci.engr.chem,sci.engr.biomed,sci.engr.advanced-tv,sci.energy.hydrogen
Subject: Re: www site for engineers and scientists
Date: 13 Aug 95 08:37:14
Organization: /u/dave/.organization
Lines: 3
Distribution: usa
Message-ID: <DAVE.95Aug13083714@cmns-moon.think.com>
References: <NEWTNews.11668.804751344.oksi@oksi.cerfnet.com>
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	<3uuk7v$1m3@helena.MT.net> <DCFxyH.73E@ko.kcp.com>
NNTP-Posting-Host: cmns.think.com
In-reply-to: dhutton@kcp.com's message of Fri, 28 Jul 1995 19:25:55 GMT
Xref: bigblue.oit.unc.edu sci.engr.mech:17056 sci.engr.marine.hydrodynamics:547 sci.engr.manufacturing:7072 sci.engr.lighting:2632 sci.engr.heat-vent-ac:1776 sci.engr.geomechanics:259 sci.engr.control:6417 sci.engr.civil:10196 sci.engr.chem:9283 sci.engr.biomed:4707 sci.energy.hydrogen:2635

I have read that Netscape is not following the current protocals and
that some of their enhancements are leading to WWW incompatabilities.
They are creating anther Beta vs VHS conflict.


From orgnine@well.com Mon Aug 14 13:51:54 EDT 1995
Article: 2633 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!zombie.ncsc.mil!simtel!news.kei.com!bloom-beacon.mit.edu!newsfeed.internetmci.com!news.sprintlink.net!in1.uu.net!news1.digital.com!nntp-hub2.barrnet.net!nntp-ucb.barrnet.net!well!usenet
From: David Orgish <orgnine@well.com>
Newsgroups: sci.engr.lighting
Subject: Lighting education for Architects
Date: 14 Aug 1995 06:56:56 GMT
Organization: The Whole Earth 'Lectronic Link, Sausalito, CA
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I have been given the opportunity to introduce lighting to a group of 
architectural students this term at a local college. I am interested in 
developing the students awareness of lighting in their everyday travels. 
One possible approach is to ask the students to engage themselves in 
"experiments" which would enhance their experience with light (for 
example, color, emotional response, etc.). Given that this newsgroup is 
read by many of the most outstanding people in this industry, I thought 
this would be a good place to share some thoughts and ideas on the 
subject. Any feedback would be most appreciated.

Kind regards,




From Lighting Guy Mon Aug 14 13:51:55 EDT 1995
Article: 2634 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!newsfeed.internetmci.com!news.sprintlink.net!news3.insinc.net!newsfeed.direct.ca!usenet
From: cnygard@direct.ca (craig nygard)
Newsgroups: sci.engr.lighting
Subject: Re: Thunder & Lightning
Date: 14 Aug 1995 07:58:57 GMT
Organization: Internet Direct Inc.
Lines: 16
Message-ID: <40mvo1$pl8@grid.Direct.CA>
References: <40fv08$ag6$1@mhafm.production.compuserve.com>
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In article <40fv08$ag6$1@mhafm.production.compuserve.com>, Craig Lewis <102341.3410@CompuServe.COM> says:
>
>  I need help.....
>
>  I would like to have a couple of strobe lights and sync them to 
>sound (thunder).  Anybody have any ideas on how to sync them or 
>to create something that is made just for this?
>
>  Thanks,
>    Craig

Most larger lighting rental houses will have an audio (0-10v line) input 
strobe controller and syncable strobe for rent for a resonable price.

		L.G.
 


From lwilton@BIX.com Mon Aug 14 13:51:56 EDT 1995
Article: 2635 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!newsjunkie.ans.net!howland.reston.ans.net!news.sprintlink.net!in1.uu.net!news.delphi.com!usenet
From: lwilton@BIX.com (Loren Wilton)
Newsgroups: sci.engr.lighting
Subject: Re: Thunder & Lightning
Date: 13 Aug 1995 23:40:20 GMT
Organization: Delphi Internet Services Corporation
Lines: 36
Message-ID: <40m2h4$mjl@news2.delphi.com>
References: <40fv08$ag6$1@mhafm.production.compuserve.com>
Reply-To: lwilton@BIX.com (Loren Wilton)
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    This message has been posted with development version software.
    If there are any problems with the message format, send me mail.

In article <40fv08$ag6$1@mhafm.production.compuserve.com>,
   Craig Lewis <102341.3410@CompuServe.COM> wrote:
>  I would like to have a couple of strobe lights and sync them to 
>sound (thunder).  Anybody have any ideas on how to sync them or 
>to create something that is made just for this?

It depends on where the sound is coming from.  Using modern technology,
one might assume that the thunder could be a sample on a synth.  The
synth will respond to MIDI commands, and may even be able to generate them
if it has a built-in sequencer.

You can also get quite cheap switch closure devices that are triggered
by MIDI commands.  A switch closure can of course be used to trigger your
strobes.

So you can record your thunder as some samples, set up a sequencer to play
them back, and also have it trigger the strobes.

Older technology would have used thunder on one track of a tape recorder,
and a cue track on the other track, or foil on the back of the tape,
depending on the sort of tape player you used.

	Loren

PS: If you are planning on using this in a theatrical production, test
it beforehand by triggering the strobes manually.  It has been my experience
that strobes by themselves make lousy lightning effects.  The flash duration
is too short.  You will probably get better results with some 250W or 500W
photoflood bulbs, since when you pulse them you can get something lasting
around .1 to .3 second as it fades out.  The longer time causes the pupils
to close down farther, and give a sensation of "deeper darkness" after
the flash, just as a real lightning bolt will.  A typical photo strobe
is so fast that the eyes don't start to close down.

	LW
	


From nils.borg@nutek.se Mon Aug 14 13:51:58 EDT 1995
Article: 2636 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!news.ultranet.com!news.sprintlink.net!in1.uu.net!dove.nist.gov!gateway
From: nils.borg@nutek.se (Nils Borg)
Newsgroups: sci.engr.lighting
Subject: Right Light Three Proccedin
Date: 13 Aug 1995 10:20:45 -0400
Organization: NIST
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ANGÅENDE                 Right Light Three Proccedings available

RIGHT LIGHT THREE PROCEEDINGS AVAILABLE NOW

A very comprehensive, reliable and authoritative update on the status of
energy-efficient lighting programs and technologies around the world.

Proceedings from Right Light Three, the 3rd European Conference on
Energy-Efficient Lighting

·	50 peer-reviewed papers and 30 poster papers by authors from 30 countries
·	575 pages in two volumes on different aspects of energy-efficient lighting


VOLUME ONE: PEER-REVIEWED PAPERS in five broad topic areas:
·	IMPLEMENTATION, including 21 papers under the following headlines: National
Programmes and Perspectives, Commercial and Industrial Lessons from the Field,
Residential Lessons From the Field, and Technology Push and Lighting Quality.
Implementation papers mainly cover Brazil, China, India, Mexico, Netherlands,
Poland, Sweden, UK, and USA.
·	LIGHTING SYSTEMS, including 12 papers on Daylighting, Lighting Design
Software, Controls and Daylight, and Lighting Design and Application Issues.
These papers cover case and comparative studies on the application of
traditional technologies as well as state-of-the-art technologies such as
sulphur lamps and hollow light guide systems, advanced daylight systems, and
daylight dimming systems. Papers from Canada, Denmark, Italy, Norway, Germany,
UK, and USA.
·	STANDARDS, GUIDELINES, AND POLICY ISSUES including eight papers under three
subcategories: Five papers (from Canada, Denmark, UK, and USA) give a general
overview on policy options and discuss the feasibility of European lighting
standards, as well as discussing component testing and technology-specific
standards. Three papers give updates on the new UK, Dutch and US National
Standards and Guidelines.
·	LIGHTING AND ENVIRONMENT, including six papers under two subcategories:
Economics and Life-Cycle Analyses, and "Sky Glow" with authors from Germany,
Japan, the Netherlands, Norway, UK, and Sweden.
·	LIGHTING AND RENEWABLES, with four papers on PV-based lighting systems.
Here, general technology overviews as well as two papers on the national
large-scale programs in Vietnam and Sri Lanka are presented.

VOLUME TWO contain POSTER PAPERS from all five topic areas, including papers
on:

·	CFL Programs in Brazil
·	Light loggers as a low-cost method for evaluating lighting savings
·	Electricity conservation and T&D losses in electricity grids
·	Public lighting in the Netherlands
·	Lighting design and energy analysis software
·	Using lighting patterns to change lighting practice
·	Public electric utility perspectives
·	Comparisons between various luminaire types and their light distribution
·	Integrating daylight and artificial lighting in developing-country
situations
·	Sulphur lamps and advanced reflector-based light distribution
·	general overviews and commercial/industrial case studies from Argentina,
India, Lithuania, the Netherlands, Poland, Romania, USA
·	Industrial and Public Lighting standards and guidelines from Romania and
Denmark

Right Light Three, the 3rd European Conference on Energy-Efficient Lighting,
was organised by Northern Electric on behalf of the International Association
for Energy-Efficient Lighting (IAEEL). The conference took place in Newcastle
upon-Tyne, England, June 18-21, 1995. The third conference in this series of
bi-annual conference was the most international event so far with more than
200 participants from 40 countries.


Proceedings cost GBP 120 (surface mail) and GBP 130 (air mail). Invoice will
be included with the proceedings. Two or copies to the same address (and on
the same invoice) cost GBP200 (300 for three copies etc). ) (GBP 210, 310,
etc. for air delivery)

Order proceedings from (please state if you prefer air delivery)
Right Light Three Conference Office
Northern Electric
Carliol House
Market Street
Newcastle-upon-Tyne NE1 6NE
phone: + 44 191 235 2801
Fax: + 44 191 235 2898

OR:

You can also Email your order to me, Nils Borg, <nils.borg@nutek.se> and I
will forward your request to Northern Electric.




From pkay@smartlink.net Mon Aug 14 13:51:59 EDT 1995
Article: 2637 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!newsfeed.internetmci.com!news.sprintlink.net!news.smartlink.net!usenet
From: Peter Kesselman <pkay@smartlink.net>
Newsgroups: sci.engr.mech,sci.engr.marine.hydrodynamics,sci.engr.manufacturing,sci.engr.lighting,sci.engr.heat-vent-ac,sci.engr.geomechanics,sci.engr.control,sci.engr.civil,sci.engr.chem,sci.engr.biomed,sci.engr.advanced-tv,sci.energy.hydrogen
Subject: Re: www site for engineers and scientists
Date: 13 Aug 1995 18:12:29 GMT
Organization: SmartDOCS
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Message-ID: <40lfad$isu@frodo.smartlink.net>
References: <NEWTNews.11668.804751344.oksi@oksi.cerfnet.com>	<3tpr8q$pk8@news.vcd.hp.com> <3ufc2v$ph0@vail.levels.unisa.edu.au>	<3uuk7v$1m3@helena.MT.net> <DCFxyH.73E@ko.kcp.com> <DAVE.95Aug13083714@cmns-moon.think.com>
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dave@cmns-moon.think.com (Dave Mainwaring) wrote:
>I have read that Netscape is not following the current protocals and
>that some of their enhancements are leading to WWW incompatabilities.
>They are creating anther Beta vs VHS conflict.

Actually, they are pushing the envelope for improvements that are really 
easy in this day and age. Netscape and its users are not content to wait 
around while a bunch of academics try to decide on the next HTML 3.0 
standards (most of the enhancements are proposed 3.0 standards). Are you 
willing to wait?


Peter Kesselman 
http://www.smartlink.net/~pkay




From marks@news.holonet.net Mon Aug 14 13:52:00 EDT 1995
Article: 2638 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!tank.news.pipex.net!pipex!news.sprintlink.net!holonet!colossus.holonet.net!marks
From: marks@news.holonet.net (postmaster@marks.org)
Newsgroups: sci.engr.lighting
Subject: Re: Thunder & Lightning
Date: 13 Aug 1995 21:08:35 GMT
Organization: HoloNet National Internet Access System: 510-704-1058/modem
Lines: 19
Message-ID: <40lpkj$ohf@colossus.holonet.net>
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X-Newsreader: TIN [version 1.2 PL2]

Craig Lewis (102341.3410@CompuServe.COM) wrote:
:   I need help.....

:   I would like to have a couple of strobe lights and sync them to 
: sound (thunder).  Anybody have any ideas on how to sync them or 
: to create something that is made just for this?

:   Thanks,
:     Craig


Craig,

Try Lightning Strikes at 213/461-6361, and Great American
Market at 213/461-0200.

Good Luck!

  -Dale Marks          dale@marks.org


From lwilton@BIX.com Mon Aug 14 13:52:02 EDT 1995
Article: 2639 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!hookup!news.uoregon.edu!news.delphi.com!usenet
From: lwilton@BIX.com (Loren Wilton)
Newsgroups: sci.engr.lighting
Subject: Re: martin prof u.k.
Date: 13 Aug 1995 23:40:16 GMT
Organization: Delphi Internet Services Corporation
Lines: 13
Message-ID: <40m2h0$mjl@news2.delphi.com>
References: <40dfnn$gk3@soap.pipex.net>
Reply-To: lwilton@BIX.com (Loren Wilton)
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    This message has been posted with development version software.
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In article <40dfnn$gk3@soap.pipex.net>, postmaster@cyber.winweb.com wrote:
>does anyone know if martin professional have an e.mail adress or a www 
>page?
>is there any one out there with any info on down loading programmes from 
>the martin 2308 lighting controller

Try asking over in alt.stagecraft or rec.arts.theatre.stagecraft; you will
probably get a better response.  This group tends more toward architectural,
theoretical, and scientific lighting issues.  The other groups cover theater
and disco lighting quite well.

	Loren
	


From 102341.3410@CompuServe.COM Mon Aug 14 13:52:04 EDT 1995
Article: 2640 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!newsfeed.internetmci.com!news.sprintlink.net!in2.uu.net!news.compuserve.com!news.production.compuserve.com!news
From: Craig Lewis <102341.3410@CompuServe.COM>
Newsgroups: sci.engr.lighting
Subject: Re: Thunder & Lightning
Date: 14 Aug 1995 00:32:04 GMT
Organization: CompuServe, Inc. (1-800-689-0736)
Lines: 1
Message-ID: <40m5i4$rel$1@mhafc.production.compuserve.com>
References: <40lpkj$ohf@colossus.holonet.net>

  I will try it Monday, Thanks!


From bmhn_cif@uhura.cc.rochester.edu Mon Aug 14 13:52:05 EDT 1995
Article: 2641 of sci.engr.lighting
Newsgroups: sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!news.kei.com!ub!galileo.cc.rochester.edu!uhura.cc.rochester.edu!bmhn_cif
From: bmhn_cif@uhura.cc.rochester.edu ()
Subject: Plasma balls and the sort.. 
Message-ID: <1995Aug14.010217.17546@galileo.cc.rochester.edu>
Sender: news@galileo.cc.rochester.edu
Nntp-Posting-Host: uhura.cc.rochester.edu
Organization: University of Rochester - Rochester, New York
Date: Mon, 14 Aug 95 01:02:17 GMT
Lines: 16

	I would like information on how to build the following 

A plasma light souce  - such as those seen in radio shack etc.  

A collomated light souce.  I know how to build one basically but do not know
where to get the parts. 

A lava lamp - what is in those things anyway?


Any info appriciated.. 

bmhn_cif@uhura.cc.rochester.edu

Brian S. Meehan



From jack@widomaker.com Mon Aug 14 13:52:07 EDT 1995
Article: 2642 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news.sprintlink.net!in1.uu.net!news.widomaker.com!usenet
From: jack@p-o.widomaker.com (Dr. John R. Davidson)
Newsgroups: sci.engr.lighting
Subject: Re: Searching for "Lighting Design" by Moon and Spencer
Date: 14 Aug 1995 16:36:03 GMT
Organization: Widomaker Communication Services
Lines: 11
Message-ID: <40nu1j$32e@widomaker.widomaker.com>
References: <40nt36$29e@widomaker.widomaker.com>
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In article <40nt36$29e@widomaker.widomaker.com>, jack@p-o.widomaker.com 
says...
>
>I would like to buy a copy of "Lighting Design" by Perry Moon and Domina 
>Eberly Spencer. It was published circa 1948, and was used as a textbook 
>at Brown University, Providence, RI.    
>                                Jack
>                        jack@widomaker.com
>
Sorry. My correct e-mail address is   jack@p-o.widomaker.com



From rfsmith@csupomona.edu Tue Aug 15 01:17:10 EDT 1995
Article: 2643 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!uunet!in2.uu.net!dove.nist.gov!gateway
From: rfsmith@csupomona.edu
Newsgroups: sci.engr.lighting
Subject: Lighting Educators Conference
Date: 14 Aug 1995 17:44:54 -0400
Organization: NIST
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August 14, 1995

As you may know, a follow-up to the Conference on Lighting Education held at
the University of Colorado is being planned at Cal Poly Pomona, and is
tentatively scheduled for October 26-29, 1995. Initial responses to this
announcement have prompted this survey.  We would appreciate a response to the
following survey at your earliest convenience. Please reply to:

Frank Smith
Cal Poly
3801 W. Temple Ave.
Pomona CA 91768

RFSmith@CSUPomona.EDU

1) Do you feel a follow-on conference would be beneficial?	Yes   No

2) Do you feel a conference with a workshop format dealing with focused areas
such as the following agenda would be responsive to your interests:

	a) Conference focus:
		Teaching aids, descriptions and library resources? 	Yes
 No
	b) Workshops:
	Laboratory experiments, demonstrations, and projects? 	Yes   No
	Lecture, texts, publications, sources? 	Yes   No
	Establishment of an educators network? 	Yes   No
	Models for collaborative university-university and/or
	  university-industry instruction, research and resources? 	Yes
 No
	c) Would you be willing to take a leadership role in the workshops or
other              		conference sessions? 	Yes   No
	d) Other suggestions and comments?________________________________
	___________________________________________________________

3) Schedule options:
	a) October 26-29, 1995-likely to attend? 	Yes   No
	b) February, 1996-likely to attend? 	Yes   No
	c) Would you prefer a Th-Sun Conference?    or a Fri-Sun Conference?

4) Is an estimated 3 days lodging, meals, and fees charge of approx. $190
acceptable?	Yes   No

5) Other suggestions?_______________________________________________
	___________________________________________________________
___________________________________________________________


From tanse@singnet.com.sg Tue Aug 15 01:17:11 EDT 1995
Article: 2644 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!news.kei.com!simtel!news.sprintlink.net!howland.reston.ans.net!newsjunkie.ans.net!lantana.singnet.com.sg!usenet
From: tanse@singnet.com.sg
Newsgroups: sci.engr.lighting
Subject: Re: Color (colour)
Date: Mon, 14 Aug 1995 20:47:48 GMT
Organization: Singapore Telecom Internet Service
Lines: 26
Message-ID: <40mobs$gd1@lantana.singnet.com.sg>
References: <403bun$go3@shiva.usa.net>
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X-Newsreader: Forte Free Agent 1.0.82

hkcastle@usa.net wrote:

>Color (Colour) measurement and tolerancing!

>I am seeking information about a color tolerancing system called CMC.

>It uses L, c, h color space and establishes ellipsoid tolerances around targets. Ellipsoids get
>larger with higher chroma values simulating human sensitivity.

>This system is extensively used in the U.K. and E.C. for establishing color specifications (colour
>specifications).  It was developed for textiles and dyes.  It is an ISO standard and mimicked by
>AATCC standards.

>If you use this system or know where I can talk with someone who does, please drop me a line
>at hkcastle@usa.net

You might want to contact Minolta Corporation at Ramsey for more
information.  They manufacture a range of color instrumentation.
Hope this help.

GT







From neofish@MCS.COM Fri Sep  1 01:20:37 EDT 1995
Article: 2714 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!news.kei.com!ddsw1!news.mcs.net!not-for-mail
From: neofish@MCS.COM (Jacob Fishman)
Newsgroups: sci.engr.lighting
Subject: Neon Artist Home Page
Date: 26 Aug 1995 18:07:24 -0500
Organization: MCSNet Services
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new home page on neon artwork
http://www.mcs.net/~neofish/home.htm
Let me know what you think.
JAF



From joseph@cts.com Fri Sep  1 01:20:38 EDT 1995
Article: 2715 of sci.engr.lighting
Newsgroups: sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!cs.utexas.edu!usc!crash!joseph
From: joseph@cts.com (Joseph Hunter)
Subject: " Maintenance Management made easier  ! "  a FREE Guide
Organization: CTSNET
Date: Sun, 27 Aug 1995 15:48:49 GMT
Message-ID: <DDzGDE.GJA@crash.cts.com>
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 A friend & I are almost ready with a helpful FREE Guide:

	" Maintenance Management made e a s i e r ! "

 To be one of the first in line for the URL (Home Page) # ,when we get it, reply NOW.









From devitech@novi.auc.dk Fri Sep  1 01:20:39 EDT 1995
Article: 2716 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!newsfeed.internetmci.com!howland.reston.ans.net!news.sprintlink.net!sunic!sunic.sunet.se!news.uni-c.dk!iesd.auc.dk!alope!devitech
From: devitech@novi.auc.dk (Devitech I/S)
Newsgroups: sci.engr.lighting
Subject: How much IR-radiant energy can the eye tolerate?
Date: Mon, 28 Aug 1995 18:53:06 LOCAL
Organization: Math & CS at Aalborg University
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We are currently working with a infrared computer vision system, for which the 
ilumination is to be automatically controlled. Our illumination system consists
of infrared lamps, which radiates light of a wavelenght from 800 - 1000 nm.
Due to the fact that infrared light can be dangerous to the eye, we would 
like to know if anyone is aware of the maximal irradiance Watt/m^2 that the 
eye can tolerate (as a function of wavelength). Also we would like to know how 
much this limit changes if the light is pulsed (only "on" in the time 
of exposure, eg. 1/10000 sec. ) i.e. the limit as a function of T_on and 
dutycycle. 


Regards

Jesper Due, Peter Jurgensen and Thomas Heder.
Devitech
E-mail: devitech@novi.auc.dk



From robpen@wseo.wa.gov Fri Sep  1 01:20:40 EDT 1995
Article: 2717 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!news.sprintlink.net!in2.uu.net!dove.nist.gov!gateway
From: robpen@wseo.wa.gov (Rob Penney)
Newsgroups: sci.engr.lighting
Subject: LED Exit Sign Retrofit Kits: 240V,50Hz
Date: 28 Aug 1995 15:51:37 -0400
Organization: Washington State Energy Office
Lines: 12
Sender: daemon@dove.nist.gov
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I would very much appreciate any leads for manufacturers of LED exit sign
retrofit kits that operate on 240-volt, 50-Hz.  Hopefully these will be
off-the-shelf, commonly available in Europe and not custom specialty
products.  We have mostly dealt with U.S. clients but are starting to branch
out.  Thank you.

Rob Penney, P.E.
Lead Engineer for the Energy Ideas Clearinghouse
robpen@wseo.wa.gov
(360) 956-2053



From snodirk@hcc.be Fri Sep  1 01:20:41 EDT 1995
Article: 2718 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!newsfeed.internetmci.com!howland.reston.ans.net!tank.news.pipex.net!pipex!dish.news.pipex.net!pipex!INbe.net!usenet
From: snodirk@hcc.be
Newsgroups: sci.engr.lighting
Subject: DXF-512
Date: 28 Aug 1995 20:12:37 GMT
Organization: INnet NV (post doesn't reflect views of INnet NV)
Lines: 1
Distribution: world
Message-ID: <41t7vl$i2u@news.INbe.net>
Reply-To: snodirk@hcc.be
NNTP-Posting-Host: pool03-28.innet.be
X-Newsreader: IBM NewsReader/2 v1.03

Does anybody know the latest protocol of DXF-512. 


From gary_sasser@sj.hp.com Fri Sep  1 01:20:43 EDT 1995
Article: 2719 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!newsfeed.internetmci.com!usenet.eel.ufl.edu!col.hp.com!news.dtc.hp.com!hpscit.sc.hp.com!news
From: Gary Sasser <gary_sasser@sj.hp.com>
Newsgroups: sci.engr.lighting
Subject: Help on Book Search
Date: 28 Aug 1995 22:52:11 GMT
Organization: Hewlett Packard
Lines: 20
Message-ID: <41thar$sej@hpscit.sc.hp.com>
NNTP-Posting-Host: sjs0p806.sj.hp.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.1N (Windows; I; 16bit)

I'm interested in receiving suggestions for locating a good technical 
book on the history of commercial light sources, particularly, 
incandescent (including halogen), low-pressure mercury, & low- and 
high-pressure sodium.  (The info can be contained in multiple 
references.)  Up to now, I have access only to current product offerings, 
and general treatments of the history of lighting (IESNA's Lighting 
Handbook, etc.); I'd prefer a rather technical and detailed 
historical survey.

Thanks for your help.

************************************************************************
*  Gary Sasser  * HEWLETT-PACKARD      * Phone:           408/435-6333 *
*               * Optoelectronics Div. * Telnet:            1-435-6333 *
*    Product    * M/S 91-UH            * Fax:             408/435-6574 *
*  Development  * 370 W. Trimble Road  *                               *
*   Engineer    * San Jose, CA  95131  * e-mail: gary_sasser@sj.hp.com *
************************************************************************




From joannt@teleport.com Fri Sep  1 01:20:44 EDT 1995
Article: 2720 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!newsfeed.internetmci.com!info.ucla.edu!library.ucla.edu!psgrain!nntp.teleport.com!nntp.teleport.com!not-for-mail
From: joannt@teleport.com (Joann Taylor)
Newsgroups: sci.engr.lighting
Subject: LED's
Date: 29 Aug 1995 08:43:29 -0700
Organization: Teleport - Portland's Public Access (503) 220-1016
Lines: 26
Message-ID: <41vcj1$ju@kelly.teleport.com>
NNTP-Posting-Host: kelly.teleport.com

I am currently compiling information on LED's - capability,
availability, etc. This is an area that is new to me so I am asking for
 pointer's to information.  I have access to a reasonable technical
 library and , of course, on-line resources.  I was hoping that readers
 might have some creative suggestions as to where one might look for
information. Namely, trade-shows where LED manufacturer's exhibit (the
last Photonics and SID shows had nothing to speak of....), particular
publications that feature LED developments,&  manufacturer's of LED's-
particularly those that might not be considered 'mainstream'. 
Any university programs doing
research in LED's would also be of interest.

Please feel free to contact me via E-mail (joannt@teleport.com )
or post for the group at large if you feel there might be enough general
interest.  Thank you for any information that you can provide - it is
much appreciated.

Best Regards,

Joann Taylor

-- 
* Joann Taylor                                               *
* Principal Consultant - Color Technology Solutions          *
* Specializing in Color Science, Technology and Applications *
* joannt@teleport.com                                        *


From joannt@teleport.com Fri Sep  1 01:20:45 EDT 1995
Article: 2721 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!newsfeed.internetmci.com!news.sprintlink.net!psgrain!nntp.teleport.com!nntp.teleport.com!not-for-mail
From: joannt@teleport.com (Joann Taylor)
Newsgroups: sci.engr.lighting
Subject: LED's - followup
Date: 29 Aug 1995 11:34:14 -0700
Organization: Teleport - Portland's Public Access (503) 220-1016
Lines: 16
Message-ID: <41vmj6$hgv@kelly.teleport.com>
NNTP-Posting-Host: kelly.teleport.com

I realized that my earlier posting may have been a bit vague regarding
my request for information related to LED's.  I have looked at
conventional resources such as literature search, and patent data bases
- as well as manufacturing directories and the like...My real interest
is in tapping into the resources that might not be as easily found -
ones that a professional in the area of LED development or manufacturing
might turn to.  

Thank you again.

Joann
-- 
* Joann Taylor                                               *
* Principal Consultant - Color Technology Solutions          *
* Specializing in Color Science, Technology and Applications *
* joannt@teleport.com                                        *


From hardis@garnet.nist.gov Fri Sep  1 01:20:46 EDT 1995
Article: 2722 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!tank.news.pipex.net!pipex!in1.uu.net!dove.nist.gov!gateway
From: hardis@garnet.nist.gov (Jonathan E. Hardis)
Newsgroups: sci.engr.lighting
Subject: RE: ANSI/IEC standards
Date: 29 Aug 1995 16:28:59 -0400
Organization: NIST
Lines: 6
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Message-ID: <009959B4.E8DB4580.15@garnet.nist.gov>
NNTP-Posting-Host: dove.nist.gov

> What legal status do the ANSI standards have?

ANSI publishes voluntary, industry standards.  If any particular standard
is later adopted as law or regulation, that's a separate issue.

  - Jonathan


From iashdown@ledalite.com Fri Sep  1 01:20:47 EDT 1995
Article: 2723 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!tank.news.pipex.net!pipex!howland.reston.ans.net!news.sprintlink.net!in1.uu.net!dove.nist.gov!gateway
From: iashdown@ledalite.com (Ian Ashdown)
Newsgroups: sci.engr.lighting
Subject: IESNA versus CIE photometry
Date: 29 Aug 1995 12:41:26 -0400
Organization: NIST
Lines: 25
Sender: daemon@dove.nist.gov
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Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"

CIE Publication 102-1993, "Recommended File Format for Electronic Transfer
of Luminaire Photometric Data," clearly and unambiguously defines three types
of photometry: A (alpha), B (beta), and C (gamma). The accompanying diagrams
leave no doubt as to how their photometric webs are oriented with respect to
the luminaire.

IES LM-63-1991, "IES Standard File Format for Electronic Transfer of
Photometric Data and Related Information," on the other hand, is less
helpful. It refers the reader to the IES Lighting Handbook for a description
of Types A and B goniophotometers, and to CIE 27-1973 ("Photometry of
Luminaires for Street Lighting") and CIE 43-1979 ("Photometry of Floodlights")
for a description of type C. It then says that "Type C is the form in common
use in the United States (although it was formerly referred to as Type A)."

As best as I can tell from the descriptions in LM-63-1991 (and comparing them
to CIE 102-1993), it appears that the IES Type C is equivalent to the CIE Type
A, and that the IES Type A is equivalent to the CIE Type C. Is this correct?

Ian Ashdown, P. Eng.                               READ THE BOOK!
Research & Development Manager          Radiosity: A Programmer's Perspective
Ledalite Architectural Products Inc.               by Ian Ashdown
9087A - 198th Street                           John Wiley & Sons, 1994
Langley, British Columbia
Canada V3A 4P8                              (Sneaky Internet Advertising)



From nils.borg@nutek.se Fri Sep  1 01:20:49 EDT 1995
Article: 2724 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!tank.news.pipex.net!pipex!howland.reston.ans.net!news.sprintlink.net!in1.uu.net!dove.nist.gov!gateway
From: nils.borg@nutek.se (Nils Borg)
Newsgroups: sci.engr.lighting
Subject: ANSI/IEC standards
Date: 29 Aug 1995 14:37:38 -0400
Organization: NIST
Lines: 11
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NNTP-Posting-Host: dove.nist.gov
Mime-Version: 1.0
Content-Type: text/plain; charset="ISO-8859-1"; Name="Message Body"

ANGÅENDE                 ANSI/IEC standards

Does any one know how the US ANSI standards relate to the IEC (Int'l
Electrotechnincal Commission) standards/recommendation. What legal status do
the ANSI sdtandards have? Are there any standards that regulate harmonics from
lighting equipment, or are these standards rather recommendations?
Thanks
NILS BORG
Editor IAEEL Newsletter




From dead@netcom.com Fri Sep  1 01:20:50 EDT 1995
Article: 2725 of sci.engr.lighting
Newsgroups: sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!tank.news.pipex.net!pipex!howland.reston.ans.net!news.sprintlink.net!noc.netcom.net!netcom.com!dead
From: dead@netcom.com (ja)
Subject: The NEON list is online
Message-ID: <deadDE3w0A.8v4@netcom.com>
Organization: NETCOM
Date: Wed, 30 Aug 1995 04:19:21 GMT
Lines: 22
Sender: dead@netcom18.netcom.com

The Neon mailing list is now online.  Topic of discussion:  neon signs, 
art, lighting, sculpture, applicable codes/regulations, etc.

To subscribe, send a message to:

           listserv@netcom.com

In the body of the message (the subject is ignored) place the phrase:

           subscribe neon-l@netcom.com

(PLEASE NOTE: that is a lower case "L" after "neon-")

The list posting address is: neon-l@netcom.com


 ______________________

    John Anderson
       Mega Volt Neon
       Austin, TX
-- 


From mtnman2@ix.netcom.com Fri Sep  1 01:20:51 EDT 1995
Article: 2726 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!uunet!in1.uu.net!news.sprintlink.net!howland.reston.ans.net!ix.netcom.com!netnews
From: mtnman2@ix.netcom.com (Roy D. Buckner )
Newsgroups: sci.engr.lighting
Subject: Shielding
Date: 30 Aug 1995 03:08:04 GMT
Organization: Netcom
Lines: 12
Message-ID: <420kmk$dur@ixnews4.ix.netcom.com>
NNTP-Posting-Host: ix-den8-04.ix.netcom.com

I have a complaint in an office building that the magnetic field from
the transformer in an adjacent electrical room is interferring with
computer monitors.  The tenant will only spend up to $600, and moving
the monitors is not a consideration.  I would think that a grounded
copper plate between the monitors and the transformer would solve this
problem.  Does anyone have any experience in this matter?  I'd really
appreciate any information.

Thanks in advance.

Roy
Mtnman@ix.netcom.com


From itv@Glue.umd.edu Fri Sep  1 01:20:52 EDT 1995
Article: 2727 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!newsfeed.internetmci.com!howland.reston.ans.net!math.ohio-state.edu!magnus.acs.ohio-state.edu!lerc.nasa.gov!purdue!haven.umd.edu!cs.umd.edu!mojo.eng.umd.edu!tee.eng.umd.edu!not-for-mail
From: itv@Glue.umd.edu (Glenn M Brown Jr)
Newsgroups: sci.engr.lighting
Subject: Polymer Satellite Video Conf.:  "Polymer Manufacturing & Processing"
Date: 30 Aug 1995 12:00:56 -0400
Organization: Project Glue, University of Maryland, College Park
Lines: 245
Message-ID: <4221vo$88h@tee.eng.umd.edu>
NNTP-Posting-Host: tee.eng.umd.edu

You and members of your organization are invited
to participate in a live satellite broadcast titled:
"Polymer Manufacturing and Processing"

presented by the University of Maryland 
Instructional Television System on September 7, September 14
and September 21, 1995

For information about this seminar, you can e-mail us at 
itv@eng.umd.edu  or call us at (301)-405-4905

Also check out our cool web pages at 
http://www.polymers.com/polylink/sponsors/s1.html

Enrollment:
This 3 day seminar will be broadcast live via satellite on
 the National Technological University (NTU) Network. 
 (Seminar Code MC95090704).
 To participate in this seminar your organization must be a
 member of NTU.  A list of NTU sites is included at the end 
of this post. If you have questions about NTU 
registration/membership, please call (303) 495-6400.

SEMINAR DESCRIPTION:  From time to time in applied science,
there is a condition where the technology greatly lags the
practice, we are such a nexus in the injection molding field. 
The nature of the industry has drastically changed, but the
content of the published research has not.  Over the past 5-7
years in the plastics field, product performance and
properties have been achieved by blending, alloying and
reactive compounding, rather than the creation of new
polymers.  One reason for the shift is that any new product
requires an entire vertical chain of suppliers and customers
in order to bring the product to market.  This process is too
expensive and time consuming.  Furthermore, the new polymers
may require more complex architecture in order to satisfy the
performance requirements.  There is an inverse relationship
between polymer complexity and recyclability.
    It is more incumbent upon the involved personnel - from
the machine operator to the process design engineer - to
understand the complex relationship between the chemistry of
the polymer, the rheology of the polymer system, the specific
mixing process and the final screw design and operating
conditions.
    This series of seminars will provide the building blocks for
a basic understanding the various aspects of polymer processing.
Case studies will demonstrate how these principles assist in
understanding the problems and finding the solutions.

BENEFITS:  You will:

*   Be introduced to general principles of polymer science with
    an emphasis on polymer blends and compatibilized polymer mixtures
*   Understand the issues in characterizing polymer
    mixtures and blends
*   Understand the fundamentals to polymer flow in an extruder
*   Understand the principals for screw design in a
    Corotating Twin Screw Extruder
 
INTENDED AUDIENCE:  This course is for machine operators, lab
technicians, polymer engineers, people with Chemical,
Materials, and Mechanical Engineering degrees who are now
involved in the polymer industry.

PRESENTERS:   Robert M. Briber, Ph.D., is an Assistant Professor
of Materials and Nuclear Engineering.  Prior to coming to the
University of Maryland, Dr. Briber was a staff scientist at
the National Institute of Standards and Technology.  Dr.
Briber is an expert in the areas of polymer physics, polymer
characterization and polymer morphology.  He received his Ph.D.
>from  the University of Massachusetts in Polymer Science and
Engineering in 1984.
David Bigio, Ph.D., is an Associate Professor of Mechanical
Engineering.  He has been involved in the area of Polymer
Processing and Mixing for the past 10 years since receiving
his Ph.D. from MIT.  Since coming to the University of
Maryland at College Park, he has established the Polymer
Processing Laboratory which is engaged in research dedicated
to quantification of mixing as a basis for extruder
performance evaluation.  The concept has been applied to
various polymer processes like reactive extrusion,
devolitalization, and blend compatibilization for both
individual companies and the Polymer Mixing Program - an
Industrial Partnership.

Enrollment:
This 3 day seminar will be broadcast live via satellite on 
the National Technological University (NTU) Network in the 
United States, Southern Canada and Northern Mexico.
(Seminar Code  MC95090704).
To participate in this seminar your organization must be a 
member of NTU.  A list of NTU sites is included with this 
post. If you have questions about NTU 
registration/membership, please call (303) 495-6400.

*If you live in the Baltimore or Washington DC Metropolitan area
you can view this conference at one of the following remote sites
only if you are an employee of the organization:

Bureau of the Census
Department of Defense, Fort Meade/FANX
Fort Ritchie
General Accounting Office
Goddard Space Flight Center
Loral 
Naval Research Lab
Patuxant River Naval Air Station
SAIC (Science Applications International Corporation)
Social Security Admn.

*If you are an employee or member of the following
organizations, you are member of the NTU Network
and your organization has the capability to receive this 
broadcast.  Contact your training office and ask for the 
NTU Site Coordinator or call NTU at (303)495-6400.

Participating Organizations:

Advanced Micro Devices, Inc
Aeroquip Corporation
Air Products and Chemicals, Inc.
ALCOA
Alliance for Higher Education
Allied Signal Aerospace Company
American Association of Retired Persons (AARP)
AMP Incorporated
Analog Devices, Inc.
Applied Research Laboratory
Argonne National Laboratory
ARINC
Armco Steel Co., L.P.
Army Research Laboratory
AT & T
AT & T Global Information Solutions
AXIOHM IPB
Bellcore
BNR Inc.
Boeing Defense and Space Group
Bull Electronics
Burle Industries Inc.
Burr-Brown Corporation
Colorado Memory Systems
Computing Devices International
datotek, An AT & T Company
David Sarnoff Research Center
Deere & Company
Detroit Diesel Corporation
Digital Communications Associates, Inc.
Digital Equipment Corporation
Eastman Chemical Company
Eastman Kodak Company
Eaton Corporation
Eaton Cutler-Hammer
EG & G Rocky Flats
E.I. du Pont de Nemours & Company
Electronic Data Systems Corporation
E-Systems, Inc.
Ericsson GE Mobile Communications
Evans & Sutherland
Extended Systems, Inc.
Exxon Corporation
GBCS Education & Training
General Electric Company
General Instrument Corporation
Glenayre Electronics Corporation
GM Saginaw Steering
Grass Valley Group
GTE Corporation
Hamilton Standard
Harris Corporation
Hewlett-Packard Company
Honeywell, Inc.
HRB Systems
Hughes Missile Systems Company
IBM
Integrated Device Technology, Inc.
Intel Corporation
Internal Revenue Service
IOMEGA Corporation
John Deere Dubuque Works
K & L Microwave
Knolls Atomic Power Laboratory
Lake Shore, Inc.
Lawrence Berkeley Laboratory
Lawrence Livermore National Laboratory
LEXIS-NEXIS
Lexmark International, Inc.
Lockheed Martin Corporation
Loral Federal Systems Company
Loral Space Information Systems Company
Los Alamos National Laboratory
Magnavox Electro-Optical Systems Company
Magnavox Electronic Systems Company
Mason & Hanger
McDonnell Douglas Aerospace-East
Metrum Information Storage
Michigan Information Technology Network, Inc.
Micron Technology, Inc.
Middle Georgia Technology Development Center
Milliken & Company
The MITRE Corporation
Motorola, Inc.
Naval Air Development Center
Naval Air Engineering Center
Naval Air Systems Command
Naval Air Warfare Center
Naval Research Laboratory
Naval Surface Warfare Center
NASA
National Semiconductor Corporation
Noise Cancellation Technologies
Occidental Chemical Corporation
Pacific Bell
Pacific Tustin
Polaroid Corporation
Prince Corporation
PSE & G Nuclear Training Center
Quantum Corporation
RDL Inc.
Rockwell International Corporation
ROLM Company
Sandia National Laboratories
Santa Barbara Research Center
Schuller International, Inc.
Siemens Medical Systems, Inc.
Symbios Logic, Inc.
Tektronics Consolidated
Texas Instruments, Inc.
3M Company
The Travelers Insurance Company
U.S. West Advanced Technologies, Inc.
U.S. Air Force
U.S. Air Force Academy
U.S. Army
U.S. Bureau of Mines
U.S. Department of Energy
U.S. Mine Safety & Health Admistration
U.S. Navy
US Signal Corporation
Westinghouse Electronic Corporation
Whirlpool Corporation
Xerox Corporation
Zenith Data Systems




From mpodany@mail.multiverse.com Fri Sep  1 01:20:53 EDT 1995
Article: 2728 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!swrinde!hookup!multiverse!pgmdi2.pmgdi.com!user
From: mpodany@mail.multiverse.com (Mark Podany)
Newsgroups: sci.engr.lighting
Subject: Child Attractive Lighting
Date: 30 Aug 1995 20:34:39 GMT
Organization: PGM Diversified Industries
Lines: 14
Message-ID: <mpodany-3008951640010001@pgmdi2.pmgdi.com>
NNTP-Posting-Host: 205.133.15.181

I am currently consulting on a case involving a fire caused by a reading
lamp in a child's bedroom and am currently looking for standards regarding
child attractive lighting equipment, both US and foreign.  I found an IEC
standard regarding the subject but it deals with fixtures operating on 24V
and lower.  Is there anything out dealing with fixtures operating at
120VAC? Any help would be appreciated.

Mark Podany
216-885-3500 (voice, North America)
216-842-9228 (fax, North America)
E-Mail:
mpodany@pgmdi.com
MPodany@aol.com
AppleLink:D2899


From lwilton@BIX.com Fri Sep  1 01:20:54 EDT 1995
Article: 2729 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!satisfied.apocalypse.org!news2.near.net!news.delphi.com!usenet
From: lwilton@BIX.com (Loren Wilton)
Newsgroups: sci.engr.lighting
Subject: Re: LED's
Date: 31 Aug 1995 05:34:25 GMT
Organization: Delphi Internet Services Corporation
Lines: 16
Message-ID: <423hl1$7g2@news2.delphi.com>
References: <41vcj1$ju@kelly.teleport.com>
Reply-To: lwilton@BIX.com (Loren Wilton)
NNTP-Posting-Host: bix.com
X-Newsreader: NetBix 1.150
X-Newsreader-Author: lwilton@BIX.com (Loren Wilton)
    This message has been posted with development version software.
    If there are any problems with the message format, send me mail.

This sort of thing is usually covered by the more hardware-oriented electronics
shows.  Wescon usually has a large number of companies exhibiting each year.
I'm sure the east coast counterpart (I forget its name) must have many also.

Various components-oriented magazines often have ads for any number of LED
companies.  Electronic Components, ECN, EDN, and many others are good sources.

One of the largest primary LED makers in the world is Hewlett Packard.
The HP optoelectronics catalog is about 1.5 inches thick, packed with data
sheets.  Chicago Minature also sells LEDs.  There are any number of
manufacturers in the near and far east,  notably Tiwan.  Also, there are
scads of repackagers that buy leds from other sources and package them into
things like incandescent-lamp replacements.

	Loren
	


From snodirk@hcc.be Fri Sep  1 01:20:55 EDT 1995
Article: 2730 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!tank.news.pipex.net!pipex!lade.news.pipex.net!pipex!dish.news.pipex.net!pipex!INbe.net!usenet
From: snodirk@hcc.be
Newsgroups: sci.engr.lighting
Subject: DMX-512
Date: 31 Aug 1995 20:28:44 GMT
Organization: INnet NV (post doesn't reflect views of INnet NV)
Lines: 15
Distribution: world
Message-ID: <42561s$8kv@news.INbe.net>
Reply-To: snodirk@hcc.be
NNTP-Posting-Host: pool03-35.innet.be
X-Newsreader: IBM NewsReader/2 v1.03

Does anybody have info of the DMX-512 protocol for lighting equipment ?

Thanks and bye.

//------------------------------------------------------
// Dirk Snoeckx		There are two endless things.
// Lier			One is the universe,
// Belgium		The other is humans stupidity.
//			About the first I'm not certain.
//			A. Einstein
//
// E-mail   : snodirk@hcc.be or snodirk@innet.be
// HomePage : http://www.club.innet.be/~snodirk/
//
//


From billyfish@aol.com Fri Sep  1 01:20:56 EDT 1995
Article: 2731 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!newsfeed.internetmci.com!howland.reston.ans.net!news.sprintlink.net!in1.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: billyfish@aol.com (BillyFish)
Newsgroups: sci.engr.lighting
Subject: Re: Shielding
Date: 31 Aug 1995 13:08:45 -0400
Organization: America Online, Inc. (1-800-827-6364)
Lines: 18
Sender: root@newsbf02.news.aol.com
Message-ID: <424qat$ibj@newsbf02.news.aol.com>
Reply-To: billyfish@aol.com (BillyFish)
NNTP-Posting-Host: newsbf02.mail.aol.com

mtnman2@ix.netcom.com (Roy D. Buckner ) wrote

********
I have a complaint in an office building that the magnetic field from
the transformer in an adjacent electrical room is interferring with
computer monitors.  The tenant will only spend up to $600, and moving
the monitors is not a consideration.  I would think that a grounded
copper plate between the monitors and the transformer would solve this
problem.  Does anyone have any experience in this matter?  I'd really
appreciate any information.
********

If you are trying to shield the monitors from the 60 Hz field of the
transformer with a single sheet, you are out of luck.  The skin depth in
copper at 60 Hz is about 6 mm.  That is likely to be too expensive and
heavy to be practical.  Making the shield out of multiples copper sheets
with air gaps in between can make the shielding of a given total amount of
copper more effective.


From nils.borg@nutek.se Fri Sep  1 01:20:58 EDT 1995
Article: 2732 of sci.engr.lighting
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From: nils.borg@nutek.se (Nils Borg)
Newsgroups: sci.engr.lighting
Subject: Ang-RE>ANSI/IEC standards
Date: 31 Aug 1995 19:11:12 -0400
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             Svar:  Ang-RE>ANSI/IEC standards

Let' get more specific. What about CFLs is there any US law regulating
harmonic emissions from lamps under   25 W power, in accordance with the IEC
standards that has a general exemption for lighting products <25W.

AND, the new EC standards  propose that light sources under 25 W be regulated
as far as THD/PF is concerned. Is there any similar regulatory move in the US?

Will the ANSI standard propose the ame thing (and does it follow the CIE
standard today?)

Thanks
NILS BORG

--------------------------------------
Datum:
Till:
Från:


ANSI publishes voluntary, industry standards.  If any particular standard
is later adopted as law or regulation, that's a separate issue.

  - Jonathan

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From sajjac@winternet.com Fri Sep  1 01:20:59 EDT 1995
Article: 2733 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!newsfeed.internetmci.com!howland.reston.ans.net!news.sprintlink.net!in1.uu.net!winternet.com!sajjac.winternet.com!sajjac
From: sajjac@winternet.com (Steve Jacobson)
Newsgroups: sci.engr.lighting
Subject: Re: Shielding
Date: Thu, 31 Aug 1995 20:23:44 LOCAL
Organization: StarNet Communications, Inc
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In article <420kmk$dur@ixnews4.ix.netcom.com> mtnman2@ix.netcom.com (Roy D. Buckner ) writes:
>From: mtnman2@ix.netcom.com (Roy D. Buckner )
>Subject: Shielding
>Date: 30 Aug 1995 03:08:04 GMT

>I have a complaint in an office building that the magnetic field from
>the transformer in an adjacent electrical room is interferring with
>computer monitors.  The tenant will only spend up to $600, and moving
>the monitors is not a consideration.  I would think that a grounded
>copper plate between the monitors and the transformer would solve this
>problem.  Does anyone have any experience in this matter?  I'd really
>appreciate any information.

>Thanks in advance.

>Roy
>Mtnman@ix.netcom.com

The magnetic fields are at 60 Hz and copper won't start to do much below 200 
KHz.  Get yourself sheets of cold rolled steel or steel sheet metal and try 
that.  Otherwise, you will need something with higher permability, like Mu 
metal (Mu metal is REALLY EXPENSIVE).  

Good luck.  You might not be able to solve your problem.

BTW, think of what that magnetic field is doing to the people in that room.


-----------------------------------------------
Rgds		
Steve Jacobson
sajjac@winternet.com

"Everybody gets so much information all day
long that they lose their common sense",
quote by Gertrude Stein

This message is being brought to you via Win95


From cb77@konichiwa.cc.columbia.edu Mon Sep 11 00:08:12 EDT 1995
Article: 2761 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!newsfeed.internetmci.com!news.sprintlink.net!metro.atlanta.com!spcuna!news.columbia.edu!konichiwa.cc.columbia.edu!cb77
From: cb77@konichiwa.cc.columbia.edu (Craig Bingman)
Newsgroups: sci.engr.lighting
Subject: Near UV phosphors
Date: 5 Sep 1995 23:55:10 GMT
Organization: Columbia University
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All--

I'm looking for information on fluorescent lamps which produce substantial
quantities of near-UV radiation.  It seems that most black-light lamps
give a ~350 nm peak.  That is shorter than I would like.  I'm looking for
something in the gap between conventional black light lamps and 03
actinic lamps (420 nm peak.)  

I'm aware that sylvania makes a lamp with a ~365 nm peak, which is 
closer to what I'm looking for.

If anyone has any leads on other lamps with peaks between let us
say 360 and 410 nm, I would greatly appreciate that information.

Thank you,

Craig Bingman 



From MACKELL@wapa.GOV Mon Sep 11 00:08:15 EDT 1995
Article: 2762 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!tank.news.pipex.net!pipex!in1.uu.net!dove.nist.gov!gateway
From: MACKELL@wapa.GOV (Greg Mackell)
Newsgroups: sci.engr.lighting
Subject: Halogen-IR
Date: 5 Sep 1995 16:27:59 -0400
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     GE's Halogen-IR PAR lamps have been around for a while now and
I'm wondering if anyone out there has some unbiased comments about
the technology?  I've heard of shortened lamp-life in dimming applications
(as with any halogen-type lamp), but I guess I'm looking for general
satisfaction or dis-satisfaction with the product.  Does anyone have
some other experience, good or bad,  that they would like to share?
     I think the technology is great, but at around $11-$13 a shot, the
economic advantage over a typical halogen PAR is borderline with typical
utility costs.
     Also, I have one of the early verisions of the HIR and the beam tends
to be spotty.   I've heard of improvements in beam distribution, but I
haven't seen anything with my own eyes.
     Any Comments would be appreciated!

Thanks,

Gregg Mackell
Architectural Engineer
Western Area Power Administration
mackell@wapa.gov



From dickgray@csn.net Mon Sep 11 00:08:17 EDT 1995
Article: 2763 of sci.engr.lighting
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From: dickgray@csn.net (Dick Gray)
Newsgroups: sci.engr.lighting
Subject: Re: Help, GE NA-9 LPS data
Date: 6 Sep 1995 01:41:09 GMT
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I have aquired a GE NA-9 low pressure sodium vapor lamp and I am in need of 
it's electrical characteristics (arc voltage, cathode voltage & current) as 
well as ballast info. I think that this lamp is about 40 yrs old.
TIA

--Dick--
dickgray@csn.net



From alexshih@ucla.edu Mon Sep 11 00:08:19 EDT 1995
Article: 2764 of sci.engr.lighting
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From: alexshih@ucla.edu (Alex Shih)
Newsgroups: sci.engr.lighting
Subject: New Lightbulb
Date: Wed, 06 Sep 1995 05:11:45 GMT
Organization: University of California, Los Angeles
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I hear that there is a new type of light bulb that is more efficient
and produces the full spectrum of light (minus the harmful UV light).
It is supposed to be made of a non-toxic material.

Has anyone else heard of this?  If so, what is it called and what do
you think of it?

Thanks,

Alex



From joem@skypoint.net Mon Sep 11 00:08:20 EDT 1995
Article: 2765 of sci.engr.lighting
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From: joem@skypoint.net (Joe Mann)
Newsgroups: sci.engr.lighting
Subject: Re: lighting manufacturers
Date: 6 Sep 1995 05:09:36 -0400
Organization: NIST
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At 02:46 PM 9/4/95 -0500, you wrote:
>I am a student at the University of Kansas doing research on the topic of
>lamp manufacturing.  I was wondering if anybody could suggest sources of
>information that I might write to or call, or books/periodicals that I
>might purchase or check out from a library.  Any information addition to
>the little that I have so far would be very much appreciated.  Please
>respond to me personally at:
>
>Merrill@kuhub.ukans.edu
>

I am a lighting representative in the Minneapolis/St. Paul area.  Our
company carries several lines of lighting sources.  One of our lines is
Supreme Lighting Corporation of Mullins, SC.  Supreme is the last independent
manufacturer of lamps in the US.  It is family owned, and is in it's third
generation, of ownership by the Siegel family.  You may want to contact them
at 1-800-922-6693.  They have a cover sheet in their catalog that explains
it's history, and genesis.  The people at the factory are very friendly and
I'm sure that they will be glad to help you.

PS. mail sent to: Merrill@kuhub.ukans.edu, bounces...

                      _\|/_
                      (o o)
    ---------------oOO-(_)-OOo----------------
   | joem@skypoint.com        73's de: KA0YUA |
   |     www.skypoint.net/subscribers/joem/   |
    ------------------------------------------



From cbelcher@falcon.cc.ukans.edu Mon Sep 11 00:08:22 EDT 1995
Article: 2766 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!newsfeed.internetmci.com!news.mathworks.com!newshost.marcam.com!usc!cs.utexas.edu!news.sprintlink.net!in1.uu.net!dove.nist.gov!gateway
From: cbelcher@falcon.cc.ukans.edu (M. Clay Belcher)
Newsgroups: sci.engr.lighting
Subject: Lisa Merrill and lamp manufacturing
Date: 6 Sep 1995 09:19:46 -0400
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Lisa Merrill recently requested leads on information about the
manufacturing processes involved in producing lamps.  She invited
direct e-mail responses.  Unfortunately, the address she gave was
incomplete.  Please respond to her at:

	merrill@kuhub.cc.ukans.edu
		      ^^
Thanks,

Clay Belcher, PhD, P.E.                      voice:  (913) 864-3434
Associate Professor                          fax:    (913) 864-5099
Architectural Engineering                    e-mail: c-belcher@ukans.edu
                          University of Kansas
 --=+=--  --=+=--  --=+=--  --=+=--   --=+=--  --=+=--  --=+=--  --=+=--
     http://energy.arce.ukans.edu/arce/faculty/belcher/belcher.htm





From office@lasermotion.com Mon Sep 11 00:08:24 EDT 1995
Article: 2767 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!tank.news.pipex.net!pipex!news.sprintlink.net!news.internex.net!NewsWatcher!user
From: office@lasermotion.com (E. Monberg)
Newsgroups: sci.engr,sci.engr.chem,sci.engr.control,sci.engr.lighting,sci.engr.manufacturing,sci.engr.mech,sci.engr.semiconductors,sci.materials,sci.materials.ceramics
Subject: NEWS RELEASE: lasers, optics, motion & microscopes at low prices "on-line".
Date: Wed, 30 Aug 1995 22:41:49 -0800
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Xref: bigblue.oit.unc.edu sci.engr:17979 sci.engr.chem:9684 sci.engr.control:6738 sci.engr.lighting:2767 sci.engr.manufacturing:7534 sci.engr.mech:17708 sci.engr.semiconductors:4311 sci.materials:12297 sci.materials.ceramics:1111

NEWS RELEASE: lasers, optics, motion & microscopes at low prices "on-line".
August 25, 1995
***********************************************************************
To:  Edu. and Indust. Research, Teaching, and Engineering Departments, 
(Please distribute to interested persons and departments)
-----------------------------------------------------------------------
LMDC offers lasers, optics, motion & microscopes at low prices "on-line".

ANNOUNCING:     LMDC On-Line "e-office".
                LMDC On-Line "e-catalogue" - lasers, optics, motion.

LMDC, a Small, New, Growing company in "Silicon Valley" organized
To Provide Laser, Motion, Microscopy & Optics Equipment at great savings 
to labs. LMDC Buys, Sells, and Lists equipment, also engineers 
and integrates systems for special applications. Customers include 
major universities, research institutes, and large and small 
manufacturers worldwide. LMDC strives especially to assist educational 
groups on tight budgets and offers, for example, in quantity, 
a $79 step motor-driver and $99 4096 line CCD,  
as well as many other components.



E-CATALOGUE:    Cat@LaserMotion.com 
---------------------------------------------------------------
1  Send an e-mail (no text required) to: Cat@LaserMotion.com 

2  This will command our "info-bot" to reply to your address
with the full LMDC On-Line Catalogue, under constant revision, 
updated weekly, with 80 char.lines, and currently 50KBy.



E-OFFICE:       em@mediacity.com
---------------------------------------------------------------
Send inquiries to our General Manager's e-mailbox: em@mediacity.com
You are invited to communicate with "office" regarding:
         ** Orders, ** Equipment You Seek, ** Inquiries, 
                ** Your Equipment to trade or sell

GENERAL MANAGER:   
---------------------------------------------------------------
Ed Monberg,         LMDC        (Laser Motion Development Company)
General Manager     3101 Whipple Road, Union City, CA 94587-1216
                    510-429-1060                Fax 429-1065
                    e-catalogue:            Cat@LaserMotion.com
                      e-mail:                em@mediacity.com 
                      

**************************************************************
                   PRODUCT CATEGORIES
                -------------------------
WORKSTATIONS, for Measurement, Laser Cutting, Micro-machining, Scribing
CMS Coordinate Measuring Systems
X-Y TABLES
X-Y-ROTARY (combined) TABLES
ROTARY  SINGLE AXIS STAGES
LINEAR  SINGLE AXIS STAGES
STEPPER MOTORS & MOTION SOFTWARE
SERVO COMPONENTS
ENCODERS
SERVO-AMPS AND CONTROLLERS
AIR BEARINGS
ROBOTICS SYSTEMS & COMPONENTS
LASER, Optics, Lab Hardware, Microscopes
SAPPHIRE "Laser-Blade"  Tips
LASER SAFE GOGGLES
HE-NE INTERFEROMETER SYSTEMS by Hewlett Packard
CHILLERS
ELECTRONIC VISION
REAL TIME IMAGE PROCESSOR
A $99 CCD CAMERA - 4096 pixel line
GENERAL PURPOSE OPTICS
MICROSCOPE LISTING
BORESCOPES, IMAGING FIBERS, ILLUMINATING FIBERS
VIDEO CAMERAS AND LENSES
HOLOGRAPHY
SPECTROMETERS, GRATINGS & MONOCHROMETERS
SURFACE PLATES
NEWPORT STYLE TABLES, LEGS  & ACCESSORIES
LASER DIODE DRIVER
MOTOR-MIKES
VACUUM COMPONENTS AND PROCESSING RELATED
COMPTECH / ALCATEL HI VACUUM ³Vari-Q² THROTTLING VALVES
SEMICONDUCTOR LITHOGRAPHY ETCHING SYSTEM
FOR PARTICLE BEAMS
LINE POWER CONDITIONERS
VIBRATION ANALYSIS SYSTEMS
WAFER SAWS 
ELECTRONIC TEST EQUIPMENT 
PHYSICAL and CHEMICAL ANALYSIS EQUIPMENT 
VME LISTING 
IBM Model 7532 Indusrtial Computers 
T-Bar 48 Pole/DT Relays 
Precision Granulators 
GIDDINGS & LEWIS "WINSOMATIC HC" PRODUCTION DRILL SHARPENER 
PRECISION-GROUND, 0.5000"x 18.5" CHROME PLATED STEEL RODS 
*****************************************************************


From jfulton@actrix.gen.nz Mon Sep 11 00:08:26 EDT 1995
Article: 2768 of sci.engr.lighting
Newsgroups: sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!tank.news.pipex.net!pipex!news.sprintlink.net!in1.uu.net!comp.vuw.ac.nz!actrix.gen.nz!news
From: jfulton@actrix.gen.nz (John Fulton)
Subject: Philips High Efficacy Lamps
Message-ID: <DEHEtx.Cv6@actrix.gen.nz>
Sender: news@actrix.gen.nz (News Administrator)
Organization: Actrix Networks -- NZ Internet Service Providers.
Date: Wed, 6 Sep 1995 11:34:44 GMT
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Hi All

Several months ago someone posted an article mentioning
a new fluorescent lamp made by Philips, that has a much
higher efficacy than the fluoros that we are currently
used to.

I think that it was a TL12 of TL16 or something like that

Does anyone know about these lamps, or have any info
the local Philips do not know much about them at 
present.

Regards to you all

/*  John ER Fulton - Ngaio - Wellington - NEW ZEALAND
/*  Phone / FAX +64 4 479 2043



From jmchugh@fortnet.org Mon Sep 11 00:08:28 EDT 1995
Article: 2769 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!tank.news.pipex.net!pipex!in1.uu.net!dove.nist.gov!gateway
From: jmchugh@fortnet.org (Jon McHugh)
Newsgroups: sci.engr.lighting
Subject: Re-using inefficient lighting equipment
Date: 6 Sep 1995 10:35:53 -0400
Organization: NIST
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I would second Nils Borg's opinion that shipping inefficient lighting
products abroad only exports our energy inefficiency problems. If this is
nor unethical, it is pretty close.

This brings up a similar issue - while at Public Service's Energy Edge fair
18 months ago I was asking the lighting management companies there what they
did with their used lamps and ballasts that were generated by the local
demand side management programs. One companies said that they resold them at
discount prices! They were selling T-12 lamps for $0.25 each. This used
equipment helps lower the first cost of inefficient equipment (in this case
in the utilitiy's own service territory). Since this inefficient equipment
has a higher life-cycle cost, and a higher environmental cost, why would
anyone want to see it sold anywhere? This points to a need that demand side
management programs require the destruction of inefficient equipment.

I know it is hard to throw away anything that is still working - it is
counterintuitive that this is the frugal thing to do. In our City facilities
department, the electricians had saved the 10 year old magnetic ballasts
>from  an electronic ballast upgrade so they could reuse them in fixtures that
had failing magnetic ballasts. Throwing these old ballasts in the trash and
rewiring the fixtures to accept a 3 lamp electronic ballast had a lower cost
over 5 years than installing an old free ballast (this analysis included a
6% discount rate and a 0% energy escalation rate). This assumes that either
the recycled replacement ballast or the other magnetic ballast in the
fixture would fail over the next 5 years. The cost of electricity here is
$0.05/kWh.


---------------------------------
       Jon McHugh
 Energy Services Engineer
Fort Collins Light & Power
    700 Wood Street
Fort Collins, CO 80522-0580
 jmchugh@Linden.FortNet.org
    (970)221-6395
    (970)221-6619 FAX
    (970)224-6003 TDD



From hlousek@csulb.edu Mon Sep 11 00:08:31 EDT 1995
Article: 2770 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.sprintlink.net!tank.news.pipex.net!pipex!howland.reston.ans.net!usc!nic-nac.CSU.net!csulb.edu!usenet
From: Zvonimir Tomislav Hlousek <hlousek@csulb.edu>
Newsgroups: sci.engr.lighting
Subject: Re: Near UV phosphors
Date: 6 Sep 1995 20:14:17 GMT
Organization: CSULB
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References: <42io0u$4h5@apakabar.cc.columbia.edu>
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cb77@konichiwa.cc.columbia.edu (Craig Bingman) wrote:

>I'm looking for information on fluorescent lamps which produce
>substantial quantities of near-UV radiation.  It seems that most 
>black-light lamps give a ~350 nm peak.  That is shorter than I would
>like.  I'm looking for something in the gap between conventional black >light lamps and 03 actinic lamps (420 nm peak.)  
>
>I'm aware that sylvania makes a lamp with a ~365 nm peak, which is 
>closer to what I'm looking for.
>
>If anyone has any leads on other lamps with peaks between let us
>say 360 and 410 nm, I would greatly appreciate that information.
>

You may want to contact lamp manufacturers like UVP and BHK (both is LA area). They should be able to make a lamp for you with custo=
m phosphor mixture that will give you the output you want.
Here are the phone numbers:
UVP: (800) 452-6788
BHK: (909) 593-6590

I hope this helps.


Z. Hlousek



From af147@FreeNet.Carleton.CA Mon Sep 11 00:08:33 EDT 1995
Article: 2771 of sci.engr.lighting
Newsgroups: sci.engr.lighting
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From: af147@FreeNet.Carleton.CA (Chris Young)
Subject: Dimming HID Lamps ?
Message-ID: <DEHM6y.3sG@freenet.carleton.ca>
Sender: af147@freenet2.carleton.ca (Chris Young)
Reply-To: af147@FreeNet.Carleton.CA (Chris Young)
Organization: The National Capital FreeNet
Date: Wed, 6 Sep 1995 14:13:45 GMT
Lines: 8


I am wondering if anyone has experience dimming metal halide lamps.
The application would ideally vary the light output with the occupancy of
the area. It is my understanding that there is a product by Wild/Keene (sp?)
that provides various programmable light levels. Any contacts with this
company or experience with similar applications would be appreciated.
Thanks,
Chris 


From anves@aol.com Mon Sep 11 00:08:34 EDT 1995
Article: 2772 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!tank.news.pipex.net!pipex!howland.reston.ans.net!news-e1a.megaweb.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: anves@aol.com (AnVes)
Newsgroups: sci.engr.lighting
Subject: Lighting for Delicate Fabrics
Date: 6 Sep 1995 11:52:54 -0400
Organization: America Online, Inc. (1-800-827-6364)
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Would appreciate any input re: proper lighting for fabrics and garments
prone to fading.  What is recommended for general store or area lighting
and/or  spot or accent lighting of the fabric display, in terms of lamp
color temp., spectrum, UV content or lack thereof, CRI for best
appearance, etc.  Also, is this condition similar to museum lighting where
exposure time on the delicate materials is closely regulated?
Thanks for your help.
AnVes@aol.com (Tony Vespoli)


From jsani@ledalite.com Mon Sep 11 00:08:36 EDT 1995
Article: 2773 of sci.engr.lighting
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From: jsani@ledalite.com (Jeffrey Sani)
Newsgroups: sci.engr.lighting
Subject: Re: Instant Start VS Rapid Start Circuiting
Date: 6 Sep 1995 12:04:53 -0400
Organization: Ledalite Architectural Products Inc.
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In many lighting projects, the ballast is not specified.  When it is specified, the
manufacturer very rarely gets detailed information on the type.  It is commonly just
specified as electronic or magnetic.  Because of the cost differential, many
manufactureres supply instant start ballasts.  Apparently, it has been common
practice to match RS lamps with Instant Start ballasts.  These ballasts are
generally hybrids and only recently have manufacturers produced electronic Instant
start ballasts. Has anyone experienced maintenance problems with this configuration
and if so were the problems related to premature lamp failure, ballasts or
circuiting (i.e.- relays, CBs, etc...).  Initial feedback on this issue has
indicated this is done for energy efficiency.  Other than the power consumed by the
cathode preheating, I don't see any serious reduction in wattage between electronic
RS ballasts and Instant start ballasts.  Furthermore, why aren't instant start lamps
mated with instant start ballasts - wouldn't this be less expensive and more
appropriate?  Confounding this issure further is the fact lamp manufacturers
explicitly state mating a RS lamp with an Instant start ballast is a bad idea?!
What is the general consensus....

JPS

                         \|||||/
                         ( 00  )
_______________________oo0(_)0oo______________________________________

Jeffrey P. Sani, B.Sc., M.I.E.S.            Ph:    604-888-6811
Lighting Engineer, Product Applications     Fax:   604-888-2003
Ledalite Architectural Products Inc.        email: jsani@ledalite.com
______________________________________________________________________






From jahnke@crl.com Mon Sep 11 00:08:37 EDT 1995
Article: 2774 of sci.engr.lighting
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From: jahnke@crl.com (Frank Jahnke)
Newsgroups: sci.engr.lighting
Subject: Re: Near UV phosphors
Date: 6 Sep 1995 11:22:22 -0700
Organization: CRL Dialup Internet Access	(415) 705-6060  [Login: guest]
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Try Voltarc (203-255-2633).  They are the largest mfg. of "semi-custom" 
lamps, and would be happy to make a lamp appropriate for your needs.  I 
know that they have phosphors emitting near 311, 355/350, 351, 368, and 
420 nm; I'm sure they have others.

Frank Jahnke, Ph.D.
LightStream Photocatalytic


From grinberg@Eng.Sun.COM Mon Sep 11 00:08:39 EDT 1995
Article: 2775 of sci.engr.lighting
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From: grinberg@Eng.Sun.COM (Joel Grinberg)
Newsgroups: sci.engr.lighting
Subject: What are fluorescent light ballasts?
Date: 6 Sep 1995 18:36:55 GMT
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I recently went to buy simple fluorescent light fixtures for my
garage, but was overwhelmed by the selection: no ballast (in shop
lights), cheap or expensive ballasts, electronic ones...
Of course, the salesman were incapable of giving any real information.

What to these ballasts do? How do they work? How can you tell the
quality of a given ballast?

Thanks,
Joel



From orgnine@well.com Mon Sep 11 00:08:42 EDT 1995
Article: 2776 of sci.engr.lighting
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From: David Orgish <orgnine@well.com>
Newsgroups: sci.engr.lighting
Subject: Fluorescent lamp phosphors
Date: 7 Sep 1995 05:29:57 GMT
Organization: The Whole Earth 'Lectronic Link, Sausalito, CA
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Please help... I am doing some research on where rare earth phosphors 
are mined, who mines them, who buys them from whom, and in what 
quantities. I would appreciate any leads in this matter.

Regards,

Dave




From af147@FreeNet.Carleton.CA Mon Sep 11 00:08:43 EDT 1995
Article: 2777 of sci.engr.lighting
Newsgroups: sci.engr.lighting
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From: af147@FreeNet.Carleton.CA (Chris Young)
Subject: Current limiting diodes...Are exit sign retrofits worth while?
Message-ID: <DEJGyC.K8G@freenet.carleton.ca>
Sender: af147@freenet2.carleton.ca (Chris Young)
Reply-To: af147@FreeNet.Carleton.CA (Chris Young)
Organization: The National Capital FreeNet
Date: Thu, 7 Sep 1995 14:15:47 GMT
Lines: 20


I recently had a meeting with a facility manager who indicated that his exit
sign system made use of a diode that cuts the current to the incandescent
bulb in half. Obviously this will impact on the cost effectiveness of L.E.D
Exit sign retrofit kits and when compared to Compact fluorescent kits the
retrofit becomes more expensive to operate.
My understanding is these diodes have been in use since the 1950's. 
These diodes apparently extend bulb life to 50,000 hrs.
While I have not checked the light output I assume it is also cut in half.
But, since the exit signs contain two 25 watt bulbs the light output
should be acceptable.

If anyone has installed Exit sign retrofit kits and the payback has not
been achieved this may be a factor to consider. 

I would appreciate in information you may have on this topic and exit
sign lighting sources.

Thanks,
Chris


From DGINTHNER@che2.che.umn.edu Mon Sep 11 00:08:44 EDT 1995
Article: 2778 of sci.engr.lighting
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From: DGINTHNER@che2.che.umn.edu (Delores A. Ginthner)
Newsgroups: sci.engr.lighting
Subject: IESNA Student Chapters
Date: 7 Sep 1995 09:14:10 -0400
Organization: University of Minnesota
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Are there any educators out there that are interested in starting a
student chapter?????
The requirements are as follows:
    1.  Sponsored or co-sponsored by IESNA Section(s)---(I can help
        arrange this item and # 2.)
    2.  Approval of the Regional Vice President.
    3.  Operate at a university, college, or two-year accredited
        technical school offering a lighting course.
    4.  A minimum of five IESNA Student Members.
    5.  A faculty member, an IESNA member having agreed to
        participate as advisor.
If this seems like a possibility as your institution please contact
me and I can get you additional information!

Dee Ginthner, Chair
IESNA College and University Liaison Committee

dginthner@che2.che.umn.edu


From Jirachai@msn.com Mon Sep 11 00:08:47 EDT 1995
Article: 2779 of sci.engr.lighting
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From: Jirachai@msn.com (Jirachai Thongthipaya)
Newsgroups: sci.engr.lighting
Subject: Opening Postion for SALE ENGINEER
Date: 7 Sep 1995 18:39:45 GMT
Organization: Barbizon Light
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Immediate openings at BARBIZON LIGHT OF NEW ENGLAND for a Systems Integrator / 
Sales Engineer specializing in entertainment lighting equipment. 


Location        : Woburn, MA ( 30 Min. north of Boston)
        
Salary		: Commensurate with Experience

Required Skills:  

- Good communication and interpersonal skills with self motivation and sense 
of responsibility
- Familiarity with PC's and applications including Windows, Spreadsheets, CAD, 
etc..
- Emphasis on complete systems integration. Understanding all facets of a 
project
- Experience with  sales, customer service, bidding and project management
- Prior knowledge relative to the job description, or the apptitude and 
ability to learn.
                   
About Barbizon:     
================    

Barbizon is a 48 year old entertainment lighting company currently operating 
with 5 offices and expanding in to 2 new areas by this years end.
		
Barbizon Light headquarters the Systems Division, which provides lighting and 
rigging systems integration on a local, regional, national and international 
basis.
Our clients include broadcast and cable studios, theatres, performing arts 
venues,museums, casinos, feature films, production companies, lighting 
designers and academic institutions, 

We specialize in supply, installation and service of equipment in the field of 
entertainment lighting such as dimming, lighting control systems, 
rigging, power distribution, lighting instruments, lamps, expendables, and 
accessories.

To Send Resume:
===============
                E-mail  :   jirachai@msn.com
                FAX     :   (617) 935-9273

                Snail   :   Barbizon Light. 
                Attn.   :    Mr. Case Lynch
                              3 Draper St. 
                              Woburn, MA  01801



From pauliu@hk.super.net Mon Sep 11 00:08:49 EDT 1995
Article: 2780 of sci.engr.lighting
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From: pauliu@hk.super.net (Mr Paul Kim Hung Iu)
Newsgroups: alt.alumni.bronx-science,sci.engr.lighting,sci.physics
Subject: Re: FASTER THAN LIGHT~~~WHY NOT?  PLEASE E-MAIL ME
Followup-To: alt.alumni.bronx-science,sci.engr.lighting,sci.physics
Date: 7 Sep 1995 16:56:46 GMT
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: Einstein Said:

: v12 = (v1 + v2)/(1 + v1*v2) 

: Where v12 is the velocity of the combined Lorentz transformation and 
: v1 = the velocity of the first Lorentz transormation and v2 = the 
: velocity of the second Lorentz transformation.

: In his book "The Meaning of Relativity", Pg 37 in my edition.

: In your specific instance, the bullet would be going .96 c.


Let we change the conditions of this experiment.

In some place of the universe, I assume that there are only two objects A 
& B, object A run 3/4c to one direction, if there is no object B, people 
in object A may feel they have no velocity even they running at 3/4c.
Object B start moving to the opposite direction of A at the speed 3/4c,
will object A feel object B is running at the speed 1.5c far away from 
him ?

How to handle this case ?

Paul



From khyland@iol.ie Mon Sep 11 00:08:50 EDT 1995
Article: 2781 of sci.engr.lighting
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From: khyland@iol.ie (Keith Hyland)
Newsgroups: sci.engr.lighting
Subject: (none)
Date: 7 Sep 1995 19:32:38 -0400
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unsuscribe
Keith Hyland
khyland@iol.ie



From zarnott@aol.com Mon Sep 11 00:08:51 EDT 1995
Article: 2782 of sci.engr.lighting
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From: zarnott@aol.com (ZARNOTT)
Newsgroups: sci.engr.lighting
Subject: Re: Dimming HID Lamps ?
Date: 7 Sep 1995 20:02:56 -0400
Organization: America Online, Inc. (1-800-827-6364)
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I would contact some of the people at Lithonia Lighting about dimming HID
lamps.  

Your application sounds reasonable.  Expect to dim the lights only 30% to
50% with the occupany sensor and expect a noticable color shift.  For
non-clerical areas like warehouses...this is a good use of the current
technology.  You must weigh the costs and benefits.

Mike Zarnott
Business Development Resource
(800) 842-7608


From ilumenator@aol.com Mon Sep 11 00:08:52 EDT 1995
Article: 2783 of sci.engr.lighting
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From: ilumenator@aol.com (Ilumenator)
Newsgroups: sci.engr.lighting
Subject: Re: Dimming HID Lamps ?
Date: 7 Sep 1995 21:09:06 -0400
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NNTP-Posting-Host: newsbf02.mail.aol.com

In response to Chris Young's inquiry about dimming metal halide lamps,
several manufacturers offer this capability. I personally have had
experience with both WideLite and Cooper.  The technology is limited at
best, but is useful in warehouses and other areas where the color shift
won't be objectionable.  You may find the cost to be rather prohibitive,
though.


From actuary@shadow.net Mon Sep 11 00:08:54 EDT 1995
Article: 2784 of sci.engr.lighting
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From: ed steinberg <actuary@shadow.net>
Newsgroups: alt.alumni.bronx-science,sci.engr.lighting,sci.physics
Subject: Re: FASTER THAN LIGHT~~~WHY NOT?  PLEASE E-MAIL ME
Date: 8 Sep 1995 00:27:23 GMT
Organization: Shadow Information Services, Inc.
Lines: 30
Message-ID: <42o2lb$69q@bud.shadow.net>
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To: phil14b@ix.netcom.com
Xref: bigblue.oit.unc.edu alt.alumni.bronx-science:1031 sci.engr.lighting:2784 sci.physics:123251

phil14b@ix.netcom.com (Phil Johnson) wrote:
>Okay, my friend and I were talking
>In Einstein's theory of relativity he says that nothing can exceed the
>speed of light
>Well, what if there is a plane (object B) that goes 3/4 the speed of
>light, and a gun (object C) that can shoot a bullet 3/4 the speed of
>light.
>The ground would be object A
>If object B was flying and object C was shot from object B, wouldn't
>the speed of the bullet exceed the speed of light?
>Please E-Mail ASAP
>My address is phil14b@ix.netcom.com
>
>
Isn't the speed of dark greater than the speed of light? 
After all, we can see the light coming... the dark happens 
instantaneously.

-- 



?????????????????????????????????????????????
?       Who knows what evil lurks in the MIME's of men?     ?
?                                                                        
                             ?
?      THE SHADOW KNOWS --- (but not much)                    ?
?????????????????????????????????????????????




From actuary@shadow.net Mon Sep 11 00:08:55 EDT 1995
Article: 2785 of sci.engr.lighting
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From: ed steinberg <actuary@shadow.net>
Newsgroups: alt.alumni.bronx-science,sci.engr.lighting,sci.physics
Subject: Re: FASTER THAN LIGHT~~~WHY NOT?  PLEASE E-MAIL ME
Date: 8 Sep 1995 00:27:58 GMT
Organization: Shadow Information Services, Inc.
Lines: 30
Message-ID: <42o2me$69q@bud.shadow.net>
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Xref: bigblue.oit.unc.edu alt.alumni.bronx-science:1032 sci.engr.lighting:2785 sci.physics:123252

phil14b@ix.netcom.com (Phil Johnson) wrote:
>Okay, my friend and I were talking
>In Einstein's theory of relativity he says that nothing can exceed the
>speed of light
>Well, what if there is a plane (object B) that goes 3/4 the speed of
>light, and a gun (object C) that can shoot a bullet 3/4 the speed of
>light.
>The ground would be object A
>If object B was flying and object C was shot from object B, wouldn't
>the speed of the bullet exceed the speed of light?
>Please E-Mail ASAP
>My address is phil14b@ix.netcom.com
>
>
Isn't the speed of dark greater than the speed of light? 
After all, we can see the light coming... the dark happens 
instantaneously.

-- 



?????????????????????????????????????????????
?       Who knows what evil lurks in the MIME's of men?     ?
?                                                                        
                             ?
?      THE SHADOW KNOWS --- (but not much)                    ?
?????????????????????????????????????????????




From actuary@shadow.net Mon Sep 11 00:08:57 EDT 1995
Article: 2786 of sci.engr.lighting
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From: ed steinberg <actuary@shadow.net>
Newsgroups: alt.alumni.bronx-science,sci.engr.lighting,sci.physics
Subject: Re: FASTER THAN LIGHT~~~WHY NOT?  PLEASE E-MAIL ME
Date: 8 Sep 1995 00:28:14 GMT
Organization: Shadow Information Services, Inc.
Lines: 30
Message-ID: <42o2mu$69q@bud.shadow.net>
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Xref: bigblue.oit.unc.edu alt.alumni.bronx-science:1033 sci.engr.lighting:2786 sci.physics:123253

phil14b@ix.netcom.com (Phil Johnson) wrote:
>Okay, my friend and I were talking
>In Einstein's theory of relativity he says that nothing can exceed the
>speed of light
>Well, what if there is a plane (object B) that goes 3/4 the speed of
>light, and a gun (object C) that can shoot a bullet 3/4 the speed of
>light.
>The ground would be object A
>If object B was flying and object C was shot from object B, wouldn't
>the speed of the bullet exceed the speed of light?
>Please E-Mail ASAP
>My address is phil14b@ix.netcom.com
>
>
Isn't the speed of dark greater than the speed of light? 
After all, we can see the light coming... the dark happens 
instantaneously.

-- 



?????????????????????????????????????????????
?       Who knows what evil lurks in the MIME's of men?     ?
?                                                                        
                             ?
?      THE SHADOW KNOWS --- (but not much)                    ?
?????????????????????????????????????????????




From ai641@torfree.net Mon Sep 11 00:08:58 EDT 1995
Article: 2787 of sci.engr.lighting
Newsgroups: sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!hookup!interlog.com!io.org!torfree!ai641
From: ai641@torfree.net (Gary Chiasson)
Subject: 6 inch black light
Message-ID: <DEJDov.89z.0.bloor@torfree.net>
Organization: Toronto Free-Net
X-Newsreader: TIN [version 1.2 PL2]
Date: Thu, 7 Sep 1995 13:05:19 GMT
Lines: 8

I need a 6 inch black light -> both TUBE and FIXTURE.  Not just the tube.
I have called numerous places but don't have what I want: Budget Lighting,
Spencer Gifts, Edmund Scientific.  I want to order in Canada or USA.
Help!

G.C.




From Don_Ernst@kamilche.wa.com Mon Sep 11 00:09:00 EDT 1995
Article: 2788 of sci.engr.lighting
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From: Don_Ernst@kamilche.wa.com (Don Ernst)
Reply-To: Don_Ernst@kamilche.wa.com
Newsgroups: sci.engr.lighting
Distribution: world
Subject: Re: lighting manufacturers
Date: 06 Sep 1995 21:26:34 GMT
Message-ID: <3650416638.65400@kamilche.wa.com>
Organization: Kamilche Mac BBS, (360) 426-3005
Lines: 9

Get a copy of the IES, Illuiminating Engineering Society, handbook from your
college library.  It is full of data about lamps from a technical,
specification and design standpoint.
+-------------------------------------------------------------------+
| Kamilche Mac BBS, (360) 426-3262, (360) 426-2742, (360) 426-8928. |
|-------------------------------------------------------------------|
| Don't send me files or attachments larger than 30K combined!      |
| Send large items to cindy@halcyon.com w/forwarding instructions.  |
+-------------------------------------------------------------------+


From Don_Ernst@kamilche.wa.com Mon Sep 11 00:09:01 EDT 1995
Article: 2789 of sci.engr.lighting
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From: Don_Ernst@kamilche.wa.com (Don Ernst)
Reply-To: Don_Ernst@kamilche.wa.com
Newsgroups: sci.engr.lighting
Distribution: world
Subject: Re: FASTER THAN LIGHT~~~WHY NOT?  PLEASE E-MAIL ME
Date: 07 Sep 1995 06:36:16 GMT
Message-ID: <874835966.1568371@kamilche.wa.com>
Organization: Kamilche Mac BBS, (360) 426-3005
Lines: 20

Phil Johnson writes,  Okay, my friend and I were talking
In Einstein's theory of relativity he says that nothing can exceed the
speed of light
Well, what if there is a plane (object B) that goes 3/4 the speed of
light, and a gun (object C) that can shoot a bullet 3/4 the speed of
light.
The ground would be object A
If object B was flying and object C was shot from object B, wouldn't
the speed of the bullet exceed the speed of light?
Please E-Mail ASAP

Seems to me either you have a practical problem eg it's not possible or as
the theory proceeds you have a genuine time warp occuring and the bullet
enters another time frame.   
+-------------------------------------------------------------------+
| Kamilche Mac BBS, (360) 426-3262, (360) 426-2742, (360) 426-8928. |
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From jfulton@actrix.gen.nz Mon Sep 11 00:09:03 EDT 1995
Article: 2790 of sci.engr.lighting
Newsgroups: sci.engr.lighting
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From: jfulton@actrix.gen.nz (John Fulton)
Subject: Re: Dimming HID Lamps ?
Message-ID: <DEMBuH.7z7@actrix.gen.nz>
Sender: news@actrix.gen.nz (News Administrator)
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In message <42o53i$1sm@newsbf02.news.aol.com> - ilumenator@aol.com (Ilumenator)
 writes:
:>
:>In response to Chris Young's inquiry about dimming metal halide lamps,
:>several manufacturers offer this capability. I personally have had
:>experience with both WideLite and Cooper.  The technology is limited at
:>best, but is useful in warehouses and other areas where the color shift
:>won't be objectionable.  You may find the cost to be rather prohibitive,
:>though.

My best advice is don't!!

But if you must one of the two level switching systems
is by far the bect to use.

The lamp operating poins (Voltage and current) are quite
critical for proper colour, and lamp life.  A variable
dimming system is unlikely to be satisfactory in most
applications where dimming is required.

I have recently deleted dimming from a large contract
that had specified dimming for Metal Halide lamps.

/*  John ER Fulton - Ngaio - Wellington - NEW ZEALAND
/*  Phone / FAX +64 4 479 2043



From nikki@camels.demon.co.uk Mon Sep 11 00:09:04 EDT 1995
Article: 2791 of sci.engr.lighting
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From: nikki@camels.demon.co.uk (Nicola Camilleri)
Newsgroups: alt.alumni.bronx-science,sci.engr.lighting,sci.physics
Subject: Re: FASTER THAN LIGHT~~~WHY NOT?  PLEASE E-MAIL ME
Date: Sat, 09 Sep 1995 10:40:25 GMT
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phil14b@ix.netcom.com wrote:

>>In Einstein's theory of relativity he says that nothing can exceed the
>>speed of light
>>Well, what if there is a plane (object B) that goes 3/4 the speed of
>>light, and a gun (object C) that can shoot a bullet 3/4 the speed of
>>light.
>>The ground would be object A
>>If object B was flying and object C was shot from object B, wouldn't
>>the speed of the bullet exceed the speed of light?

The plane and the bullet are in different frames of reference so can't
be dealt with by this type of maths.  If you are interested I'll
follow up with more details later.

Nikki.
/==================================================================\
|   Nicola Camilleri            email: nikki@camels.demon.co.uk    |
\==================================================================/



From lwilton@BIX.com Mon Sep 11 00:09:06 EDT 1995
Article: 2792 of sci.engr.lighting
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From: lwilton@BIX.com (Loren Wilton)
Newsgroups: sci.engr.lighting
Subject: Re: Current limiting diodes...Are exit sign retrofits worth while?
Date: 8 Sep 1995 09:53:30 GMT
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    This message has been posted with development version software.
    If there are any problems with the message format, send me mail.

In article <DEJGyC.K8G@freenet.carleton.ca>,
   af147@FreeNet.Carleton.CA (Chris Young) wrote:
>
>I recently had a meeting with a facility manager who indicated that his exit
>sign system made use of a diode that cuts the current to the incandescent
>bulb in half. Obviously this will impact on the cost effectiveness of L.E.D
>Exit sign retrofit kits and when compared to Compact fluorescent kits the
>retrofit becomes more expensive to operate.
>My understanding is these diodes have been in use since the 1950's. 
>These diodes apparently extend bulb life to 50,000 hrs.
>While I have not checked the light output I assume it is also cut in half.
>But, since the exit signs contain two 25 watt bulbs the light output
>should be acceptable.

Incandescent lamp life is proportional to the inverse 13th power of the
applied voltage.  This factor must be derated because lamp life is shorter
on DC or pulsed DC, which is what you have here.  If these are halogen bulbs
(unlikely in an exit sign) there would be an even steeper derating curve,
since halogens like to run within 15% or so of rated voltage for the halogen
cycle to work correctly.

Incandescent output is proportional to the 3.5 power of applied voltage.

Thus, running the lamps on half wave will make them last much longer, and
also make much less light.  They will in fact be less energy efficient in
terms of lumens/watt than running them at full voltage.  But they will last
a heck of a lot longer (and run cooler), and that is important for exit 
light service.

This trick has really only been available since the middle 1960s in any
practical form.  The only solid state diodes avaiable before the 1960s 
were seleniums, and they had a raft of problms (not the least of which
were size and voltage drop) that made them impractical for this service.
In the 1960s "top hat" germainium and later silicon diodes came along,
whcih gave the first practical diodes for this service.

Get a copy of the Chicago Minature Lamp Catalog.  It can be had for free,
and has lots of useful lamp design information in the front matter.

You are aware that companies like IDE make LED incandescent replacements,
aren;t you?  They are socketed and have the appropriate dropping resistors
or whatever; you simply stick them in the socket in place of the dead bulb.
You could likely choose these in green or yellow or a combination and
remarket them with suitable packaging.

	Loren
	


From sam@colossus Mon Sep 11 00:09:24 EDT 1995
Article: 2793 of sci.engr.lighting
Newsgroups: sci.engr.lighting
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From: sam@colossus (Sam Goldwasser)
Subject: Re: What are fluorescent light ballasts?
In-Reply-To: grinberg@Eng.Sun.COM's message of 6 Sep 1995 18:36:55 GMT
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In article <42kpo7$n18@engnews2.Eng.Sun.COM> grinberg@Eng.Sun.COM (Joel Grinberg) writes:

>   I recently went to buy simple fluorescent light fixtures for my
>   garage, but was overwhelmed by the selection: no ballast (in shop
>   lights), cheap or expensive ballasts, electronic ones...
>   Of course, the salesman were incapable of giving any real information.

>   What to these ballasts do? How do they work? How can you tell the
>   quality of a given ballast?

Here is a brief summary.

--- sam

Flourescent Lamp Ballasts:
-------------------------

For a detailed explanation, check your library.  Here is a brief summary.

A ballast serves two functions:

1. Provide the starting kick.
2. Limit the current to the proper value for the tube you are using.

In the old days flourescent fixtures had a starter (some cheap ones still do).
The starter is a time delay switch which when first powered, allowed the
filaments at each end of the tube to warm up and then interrupted this part
of the circuit.  The inductive kick as a result of interrupting the current
through the inductive ballast provided enough voltage to ionize the gas
mixture in the tube and then the current through the tube kept the
filaments hot - usually.  You will notice that a few iterations are sometimes
needed to get the tube to light.  The starter may keep cycling indefinitely
if either it or one of the tubes is faulty.  In this case, the ballast
is just an inductor which at 60 Hz (or 50 Hz) has the appropriate impendence
to limit the curret to the tube(s) to the proper value.

Types of iron ballasts:
----------------------

Instant start, trigger start, rapid start, etc. ballasts include loosely
coupled high voltage windings and other stuff and do away with the starter:

1. The ballast for a preheat fixture (using a starter) is basically a series
   inductor.  Interrupting current through the inductor provides the starting
   voltage.

2. The ballast for a trigger start fixture has a loosely coupled high
   voltage transformer winding providing about 500-600 V for starting
   in addition to the series inductor.

3. The ballast for a rapid start fixture has in addition small windings for
   heating the filaments reducing the required starting voltage to 250-400 V.

Starting voltage is either provided by the inductive kick upon interruption
of the current bypassed through the starter for (1) or a high voltage winding
in (2) and (3).

In all cases, the current limiting is provided primarily by the impedance
of the series inductance at 60 Hz (or 50 Hz depending on where you live).

Electronic Ballasts:
-------------------

Electronic ballasts are basically switching power supplies that eliminate
the large, unreliable, 'iron' ballast and replace it with an integrated high
frequency inverter/switcher.  Current limiting is then done by electronic
chopping instead of inductance.  Properly designed electronic ballasts
should be very reliable.  Whether they actual are reliable in practice
depends on location with respect to the heat produced by the lamps as
well as many other factors.  Since they include rectification, filtering, and
operate the tubes at a high frequency, they also usually eliminate the 120 Hz
flicker associated with iron ballasted systems.

I have heard, however, of problems with these relating to radio frequency
as well as optical interference.





From paulh@usa1.com Mon Sep 11 00:09:25 EDT 1995
Article: 2794 of sci.engr.lighting
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From: paulh@usa1.com (Paul H.)
Newsgroups: sci.engr.lighting
Subject: Black light sources?
Date: Sat, 09 Sep 1995 19:29:26 -0500
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I am looking for a regular blacklight but in a powerful flood light form.

Please give me phone #s of mailorder places, or somewhere in the boston
area where I might find them.

Thanks very much in advance


From pmorrow@cyberspc.mb.ca Mon Sep 11 00:09:26 EDT 1995
Article: 2795 of sci.engr.lighting
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From: pmorrow@cyberspc.mb.ca (Phil Morrow)
Newsgroups: sci.engr.lighting
Subject: Re: Black light sources?
Date: Sun, 10 Sep 1995 04:37:57 GMT
Organization: Phil Morrow Consulting
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paulh@usa1.com (Paul H.) wrote:



>I am looking for a regular blacklight but in a powerful flood light form.

>Please give me phone #s of mailorder places, or somewhere in the boston
>area where I might find them.

>Thanks very much in advance
Paul:
I am assuming you need this for "black light" effects ie: day-glo etc.
Call your local theatrical rental house and ask for "UV Beehives".
(From the buzzing sound the ballasts used to make ICYWTK)
These used to be a mercury source with a "black light"coloured glass
filter that is used for floodlighting stages. They used to be produced
by Altman lighting in Yonkers NY, but I am sure that lots of
improvement has been made in the last few years. If my memory serves
me correct a rental house called "Barbizon" is located near or in the
Boston area and they are one of the best in the business. Failing that
look in the yellow pages under lighting suppliers, theatrical. These
are relatively common fixtures. 
If you need true UV sources (ie: specific wavelength for germicide or
research purposes) try your local  OSRAM/Sylvannia, Philips or GE
lighting reps. They can tell you about the lamp and maybe who has a
fixture for it although this is pretty
specialised/expensive/dangerous.

Hope this helps


Phil Morrow M.I.E.S.
Phil Morrow Consulting
http://www.mbnet.mb.ca/pmconsult
Lighting in Canada
http://www.mbnet.mb.ca/pmconsult/corner.html



From weezel@inforamp.net Mon Sep 11 00:09:28 EDT 1995
Article: 2796 of sci.engr.lighting
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From: weezel@inforamp.net (Sean Wenzel)
Newsgroups: sci.engr.lighting
Subject: Fluorescent Light Wiring Diagram
Date: 10 Sep 1995 13:59:10 GMT
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Does anyone know how to create a homemade fluorescent fixture.

I have a transformer-like ballast marked 14-15-20W (118V) with two wires, 
a Daytron Quick-E Starter with two terminals and a 20W fluorescent bulb 
(with 2 terminals on each end).

How do I hook it up to light?  A simple description of what plugs into 
where should get me moving.

Thanks in advance,

-Sean
email: weezel@inforamp.net  www: http://www.inforamp.net/~weezel/




From sjhart@voxel.com Wed Nov  8 10:47:09 EST 1995
Article: 3150 of sci.engr.lighting
Newsgroups: sci.engr.lighting
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From: sjhart@voxel.com (Stephen J Hart)
Subject: Pressure in a tungsten halogen bulb
Message-ID: <DHEECo.Jwr@voxel.com>
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Date: Thu, 2 Nov 1995 04:12:24 GMT

Hi folks

I'm working on a new special purpose illuminator for holographic
display. I need to label it properly as regards UL-122 and 1950 and CE.
To do so I need to know if the bulb I've selected is considered "high
pressure" or not. The standards tell me how to calculate this, but to
do so I need to know the bulb pressure in atmospheres at 50 degrees
centigrade.

The specific lamp is an Osram (Sylvania) HLX-64655 24V 250W tungsten
halogen (Xenophot).

Does anybody out there know what the internal pressure in this lamp
would be? Or where I could go for an answer? The manufacturers seem
unable to give me a definitive answer!


Stephen J Hart                      fax              +1 (714) 348-8665
Director of R&D                     e-mail            sjhart@voxel.com
                                    WWW URL       http:/www.voxel.com/

VOXEL, 26081 Merit Circle, #117,    The opinions and "facts" expressed
Laguna Hills, CA 92653-7017, USA    herein are not necessarily correct


From jkfoz@eworld.com Wed Nov  8 10:47:10 EST 1995
Article: 3151 of sci.engr.lighting
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From: jkfoz@eworld.com (JKFOz)
Newsgroups: sci.engr.lighting
Subject: Swimming pool lighting
Date: 2 Nov 1995 06:08:31 -0800
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I have had endless trouble with underwater lighting in my swimming pool.
The logical solution is a fiberoptic source. Is this available
commercially? Any other solutions would be most welcome!

John Freeman-Australia
J.K.Freeman
Paediatric Surgeon


From andylite@aztec.co.za Wed Nov  8 10:47:11 EST 1995
Article: 3152 of sci.engr.lighting
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From: Andrea BARAUSSE <andylite@aztec.co.za>
Newsgroups: sci.engr.lighting
Subject: Re: Advise Re: Halogen vs. Incandescent for Lobby
Date: 2 Nov 1995 18:32:42 GMT
Organization: T U B O M E C        L I G H T I N G
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To: cbaisley@infomatch.com

hi :
incandescent globes will have Avg. of 1000 Hrs. only .
Halogen can last 2000/ 4000 Hrs. (G.E precise carring a 3000 hrs. life 
garantee)
The compac fluorescent have Avg. life expentacee of 8000  with the     
normal ballsat and up to 10000 with electronic ballast.
What do you mean for quality of light (re: fluorescents ) ?.  If you are 
referring to the Cool colour of the light , please note that is available 
a warm colour (ex. OSRAM 41).  If you are refering to the absence of 
"punch" you might whant to considered a fitting with deep reflector 
capable of generate a moore concetrate pool of light.
For a lobby situation (possibly 24 hrs/day operation) I will definetly 
give first option to the Fluorescent (are definetly the most economical to 
run and with long mantenance intervals).
 
N.B.    ------  One year 24Hrs./day = 8760 Hrs.  --------

What you might like to considered is:
 Compact fluorescent for the general illumination
 Halogen (low voltage) to high lite some area- in order to create moods  
and a dinamic enviroment.

Wich ever way will assist you the guidence of an expert in order to 
position correctly the different fittings. 
 
 in conclusion:
 I have run some calculation in order to assist you on your decision 
making. Please remember that  even if I have converted in dollars, your 
electricity rate, labour, globe price and excalation rate might differ 
>from  our, so the cost might not rappresent the real cost in you area.
    In any event the ration should remain quite costant.


This calculation allow a) 24 hrs/day application -- 365 day/year
                       b) fix price excalation of 10% /year
                       c) No air conditioning 
                       d) Labour for globe replacent
                       e) Avg. price per year (over 5 year period)
 The 3 fittings 
1) incandescent 100w (avg. life 1000 hrs.)  1380 lumen
2) halogen 50w 12v   (avg. life 3000 hrs)   1000 lumen 
3) Dulux flu  18w    (avg. life 8000 hrs.)  1200 lumen
 becose the different caratteristic of the reflector you can see them as 
equivalent options.

       complite running cost per one fitting excluding FITTING COST.
              cost/year        ratio
              
incadescent $ 305.00             3
halogen     $ 237.00             2.3
fluorescent $ 103.12             1

Hope this will help .

have fun  and .....        MIGHT THE LITE BE WITH YOU.

arrivederci
 
                      
            



From westmor@aol.com Wed Nov  8 10:47:12 EST 1995
Article: 3153 of sci.engr.lighting
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From: westmor@aol.com (Westmor)
Newsgroups: sci.engr.lighting
Subject: Re: Swimming pool lighting
Date: 2 Nov 1995 18:58:42 -0500
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Re: Swimming Pool Lighting

You're right about fiber optics as a pool lighting solution?  Fiberstars,
Inc. manufacturers a line of fiber optic lights for pools and spas.  The
products have been a hit in the U.S.

Fiberstars has a joint venture in Australia--Fiberstars Australasia.  You
can contact Mr. Gerry Sargent at 01161398827255.

Good Luck!!!


From dartprop@ns.moran.com Wed Nov  8 10:47:13 EST 1995
Article: 3154 of sci.engr.lighting
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From: "Barry D. Besmanoff" <dartprop@ns.moran.com>
Newsgroups: sci.engr.lighting
Subject: Re: Advise Re: Halogen vs. Incandescent for Lobby
Date: Thu, 02 Nov 95 23:43:14 PDT
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If you install a dimmer on the line and drop the voltage about 5%, your lamp 
life will increase to about 8000 hours and the drop in intensity will not be 
very noticeable



From ap927@lafn.org Wed Nov  8 10:47:14 EST 1995
Article: 3155 of sci.engr.lighting
Newsgroups: sci.engr.lighting
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From: ap927@lafn.org (chris morley)
Subject: How to resilver reflectors ????
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Hi...does anyone know how to silver reflectors as used in auto headlights?
I need to make some replacements for antique cars...thanks....Chris


From dartprop@ns.moran.com Wed Nov  8 10:47:14 EST 1995
Article: 3156 of sci.engr.lighting
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From: "Barry D. Besmanoff" <dartprop@ns.moran.com>
Newsgroups: sci.engr.lighting
Subject: Re: How to resilver reflectors ????
Date: Thu, 02 Nov 95 23:48:17 PDT
Organization: a Digital Internet AlphaServer Site
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I don't know about it myself, but if you look in a book about antique 
furniture restoration it should have something on resilvering mirrors--it is a 
common repair.



From dartprop@ns.moran.com Wed Nov  8 10:47:17 EST 1995
Article: 3157 of sci.engr.lighting
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From: "Barry D. Besmanoff" <dartprop@ns.moran.com>
Newsgroups: sci.engr.lighting
Subject: Re: Luminaire Dirt Depreciation ?????
Date: Thu, 02 Nov 95 23:51:15 PDT
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The Illuminating Engineering Society reference handbook has dirt depreciation 
tables and how to use them.



From dartprop@ns.moran.com Wed Nov  8 10:47:18 EST 1995
Article: 3158 of sci.engr.lighting
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From: "Barry D. Besmanoff" <dartprop@ns.moran.com>
Newsgroups: sci.engr.lighting
Subject: Re: Pressure in a tungsten halogen bulb
Date: Thu, 02 Nov 95 23:54:25 PDT
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Contact the Osram/Sylvania engineering dep't in Danvers, Mass. This should be 
a readily available figure if you can get to the right engineer's desk!



From jworthey@enh.nist.gov Wed Nov  8 10:47:18 EST 1995
Article: 3159 of sci.engr.lighting
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From: STEINMETZ@   (Jim Worthey)
Newsgroups: sci.engr.lighting
Subject: Re: IN DESPARATE NEED OF HELP (Photophone)
Date: 3 Nov 1995 14:47:22 GMT
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In <473c1s$1kh@sifon.cc.mcgill.ca>, Zbigniew Wolanski <wolanski@power.ee.mcgill.ca> writes:
>I am having trouble with my science fair project, it is based on the photophone.
>I would like it very much if someone could give me a describtion of how it works, 
>who invented it, etc.
>					IN NEED,
>					    Filip Wolanski

Filip

I believe that one photophone design was developed by Alexander
Graham Bell. There was a practical article, or a series of articles,
on photophones in Popular Electronics, or some practical magazine
like that. I'm pretty sure the author was Forrest Mims. That is, it
was probably part of a regular column that Forrest Mims did (or
does). If you do a computer search on that name, you'll find that 
he writes lots of stuff, and that in the late 80's he did a couple
articles about photophones.

Jim Worthey



From iashdown@ledalite.com Wed Nov  8 10:47:19 EST 1995
Article: 3160 of sci.engr.lighting
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From: iashdown@ledalite.com (Ian Ashdown)
Newsgroups: sci.engr.lighting
Subject: Re: IN DESPARATE NEED OF HELP (Photophone)
Date: Fri, 03 Nov 1995 04:47:32 GMT
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STEINMETZ@   (Jim Worthey) wrote:

>In <473c1s$1kh@sifon.cc.mcgill.ca>, Zbigniew Wolanski <wolanski@power.ee.mcgill.ca> writes:
>>I am having trouble with my science fair project, it is based on the photophone.
>>I would like it very much if someone could give me a describtion of how it works, 
>>who invented it, etc.
>>					IN NEED,
>>					    Filip Wolanski

>Filip

>I believe that one photophone design was developed by Alexander
>Graham Bell. There was a practical article, or a series of articles,
>on photophones in Popular Electronics, or some practical magazine
>like that. I'm pretty sure the author was Forrest Mims. That is, it
>was probably part of a regular column that Forrest Mims did (or
>does). If you do a computer search on that name, you'll find that 
>he writes lots of stuff, and that in the late 80's he did a couple
>articles about photophones.

>Jim Worthey

If by "photophone" you mean a telephone with a light beam modulator
and receiver in the communications path, then take a look at:

  Baldwin, Neil. 1995. "The Laboratory Notebooks of Thomas Edison,"
  Scientific American 273(4):160-163 (October)

On page 160B, the article reproduces a page from Edison's notebooks,
dated April 5, 1881, that reads: "Telephony by light by use of
tasimeter." The caption reads:

  As this bizarre drawing (for a construction that never became a
  reality) demonstrates, Edison was equally capable of disregarding
  evolution from one invention to the next. The tasimeter was a
  thermometer-based instrument that Edison created to quantify the
  heat given off by the sun's corona during a total eclipse on July
  29, 1878. The most important component of the tasimeter was a
  compressed carbon "button" that expanded and contracted in
  response to minute variants [sic] in temperature. Edison employed
  this same carbon button in his telephonic transmitter (an
  improvement on Alexander Graham Bell's invention) because of
  its comparable sensitivity to the pressure of spoken-voice
  sound waves. He fancifully imagined "marrying" the two
  inventions, although he had no idea how to transmit telephone
  signals by light.

Of course, a *patentable* invention has to be reducible to practice,
so Edison is not the true "inventor" of this device. However, this
does appear to be the first documented discussion of the concept.





From voting@f10.facts.uky.edu Wed Nov  8 10:47:20 EST 1995
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                     FIRST CALL FOR VOTES (of 2)
                 unmoderated group sci.chem.coatings

Newsgroups line:
sci.chem.coatings	Paints and Coatings practitioners.

Votes must be received by 23:59:59 UTC, 24 Nov 1995.

This vote is being conducted by a neutral third party.  Questions about
this proposal should be directed to the proponents.

Proponent: Bill Bren <bill.bren@reichhold.com>
Proponent: Mike Lazar <mlazar1@ix.netcom.com>
Votetaker: Kenneth Herron <votetaker@f10.facts.uky.edu>

RATIONALE: sci.chem.coatings

Currently there is no one place to handle traffic specifically for the
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discussion involves coatings issues not related to polymers.

CHARTER: sci.chem.coatings

A newsgroup to promote the exchange of ideas and discussion of issues of
paints and coatings technology.  Anyone intrested will be welcome to
join in the discussion about, but not limited to:

	-	Polymeric coating resins
	-	Pigments
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	-	Professional societies and conferences
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	-	Employment opportunities within the coatings industry
	-	Educational and research resources
	-	Surface Color

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From lweis@freeway.net Wed Nov  8 10:47:21 EST 1995
Article: 3162 of sci.engr.lighting
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From: lweis@freeway.net (Lisa Weisgerber)
Newsgroups: sci.engr.lighting
Subject: (none)
Date: 3 Nov 1995 15:40:15 -0500
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subscribe



From robpen@wseo.wa.gov Wed Nov  8 10:47:21 EST 1995
Article: 3163 of sci.engr.lighting
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From: robpen@wseo.wa.gov (Rob Penney)
Newsgroups: sci.engr.lighting
Subject: FW: Street Lighting International Query
Date: 3 Nov 1995 16:28:31 -0500
Organization: Washington State Energy Office
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CAGranda@aol.com posted the following message on the AESP-Net listserv:

I am looking for energy efficiency professionals with experience in street
and public area lighting who might be interested in contracting to a
potential World Bank/International Finance Corporation project.




From perry@netcom.com Wed Nov  8 10:47:22 EST 1995
Article: 3164 of sci.engr.lighting
Newsgroups: sci.engr.lighting
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From: perry@netcom.com (Perry West)
Subject: Re: Pressure in a tungsten halogen bulb
Message-ID: <perryDHFoF2.6ws@netcom.com>
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To the best of my recollection, the halogen lamp envelopes must operate 
at a temperature around 700 degrees Farenheit (approx 390 degrees 
Celsius), not 50 degrees!  I also seem to recall the interal operating 
pressure being 2 to 3 atmospheres.

I am not certain about these nubers, but do know that the envelopes must 
run very hot for the halogen cycle to work, and that the pressure is high 
enough for explosion to be a possibility if the bulb is damaged.

Regards,
Perry



From mdetroit@aol.com Wed Nov  8 10:47:23 EST 1995
Article: 3165 of sci.engr.lighting
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From: mdetroit@aol.com (MDetroit)
Newsgroups: sci.engr.lighting
Subject: Unified Professional Theatre Auditions/Correction
Date: 4 Nov 1995 02:47:14 -0500
Organization: America Online, Inc. (1-800-827-6364)
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THIS NOTICE CONTAINS CORRECTIONS from the last posting on UPTA

A new set of professional theatre auditions called the Unified
Professional Theatre Auditions will be held in Memphis, TN on February
17th (Sat.), 18th (Sun.) & 19th (Mon.), 1996.  Registered theatres must
provide PAID positions, company or internship, Equity or non-Equity. 
Actors must have a post-graduate degree (MFA, MA, PhD, etc.) in theatre by
8/96, OR be a member of Equity, OR be Equity Eligible, OR have Equity
points, OR have attended last year's auditions, OR have their registration
form signed by a registered UPTA theatre, and must be available for work
year-round, not just during the summer. Tech/Admin. candidates must be
available year-round and have an undergraduate degree in technical or
administrative theatre by 8/96, or be an Equity Stage Manager, or have
their registration signed by a registered UPTA theatre.  If you are a
theatre representative, actor, technical, or administrative candidate who
meets the above qualifications, you can receive more information by
contacting UPTA at 51 S. Cooper St., Memphis, TN  38104, or contact
Michael Detroit, Audition Coordinator, UPTA, by e-mail (AOL=MDetroit,
Internet=MDetroit@AOL.COM).

-Michael Detroit-
MDetroit@AOL.COM


THESE THEATRES ATTENDED THE 1995 UPTAs.

Arkansas Arts Center Children's Theatre, Little Rock, AR;
Arkansas Repertory Theatre Company, Little Rock, AR; 
ArtReach Touring Theatre, Cincinnati, OH;
Barter Theatre, Abingdon, VA;
Birmingham Children's Theatre, Birmingham, AL;
The Blowing Rock Stage Company, Blowing Rock, NC; 
Busch Gardens, Tampa, FL;
Charlotte Repertory Theatre, Charlotte, NC; 
Circa '21 Dinner Theatre, Rock Island, IL;
Cumberland County Playhouse, Crossville, TN; 
Festival of Southern Theatre, University, MS
Flat Rock Playhouse, Flat Rock, NC; 
Greenbrier Valley Theatre/Greenbrier Rep., Lewisburg, WV;
Hope Summer Repertory Theatre, Holland, MI;
Horse Cave Theatre, Horse Cave, KY;  
Jenny Wiley Drama Association, Inc., Prestonburg, KY;
Lexington Children's Theatre, Lexington, KY; 
MA Productions, Kansas City, MO;
Murry's Dinner Playhouse, Little Rock, AR;
Nebraska Theatre Caravan, Omaha, NE;
New Stage Theatre, Jackson, MS; 
Northern Lights Playhouse, Hazelhurst, WI;
The Old Creamery Theatre Company, Garrison, IA; 
Playhouse on the Square, Memphis, TN;
Pritchard Productions, Marshall, MI;
Repertory Theatre of America/Alpha-Omega Players, Rockport, TX;
Texas Shakespeare Festival at Kilgore College, Kilgore, TX; 
Warehouse Theatre, Greenville, SC;
Wildwood Park for the Performing Arts, Little Rock, AR

THESE THEATRES MAY JOIN THEM IN 1996!
Alley Theatre, Houston, TX; Beef & Boards Dinner Theatre, Indianapolis,
IN; Burt Reynold's Institute for Theatre, Tequesta, FL; Creede Repertory
Theatre, Creede, CO; Ensemble Theatre of Cincinnati, Cincinnati, OH;
Golden Apple Dinner Theatre, Sarasota, FL; Horizon Theatre Company,
Atlanta, GA; Human Race Theatre Company, Dayton, OH; Kentucky Shakespeare
Festival, Louisville, KY; Pennsylvania Stage Company, Allentown, PA;
Theatre IV, Richmond, VA; Virginia Stage Company, Norfolk, VA; Zachary
Scott Theatre Center, Austin, TX

**************************************************************************
**
REGISTRATION INFORMATION

Actor/Tech/Admin. Registration = $20.00 through December 31, 1995, $30.00
after December 31, 1995
Theatre Registration = $100.00 after September 17, 1995
For registration information and brochures, please contact Michael
Detroit, Audition Coordinator, Unified Professional Theatre Auditions, 51
S. Cooper St., Memphis, Tennessee, 38104, 901-725-0776, FAX 901-272-7530
**************************************************************************
**
Please note that all money received will be used for administrative costs,
audition expenses, publicity, printing, and postage. This event is NOT a
money-making venture for a for-profit organization.


From ralough@ced.thegap.com Wed Nov  8 10:47:24 EST 1995
Article: 3166 of sci.engr.lighting
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From: ralough@ced.thegap.com (Richard A Lough)
Newsgroups: sci.engr.biomed,sci.engr.lighting,sci.physics.electromag
Subject: Re: Electronic ballasts
Date: Sat, 04 Nov 1995 12:13:47 GMT
Organization: thegap.com
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geoff@medphys.ucl.ac.uk (Geoff Cusick) wrote:

SNIP

>On investigation, we found that we could get whole VOLTS of a 32kHz sinewave by 
>simply waving a 'scope probe around in the room!

>I suspect that we had 2 problems - one electromagnetic, the other optical.  I'm not 
>sure how influential the EMC directive will be in this, since the frequency is very low. 
> Also, given the way that fluorescent lamps work, I'm not sure that there's a 
>cost-effective way of keeping the ballast switching frequency from radiating.

There are two relevant parts of the EMC directive:
one related to general levels of interference
the other specifically for lighting. Specific standards are set for
the performance of luminaires containing HF ballasts.

There is a slight difficulty in that the standards do not directly
relate the performance of the Luminaire to the Customer's EMC
requirements.

The advice I got when I asked a question is that fitness for purpose
is the criteria. So if you have an EMC problem call in the Trading
Standards Officer. (The Directive is already in place, but not yet
mandatory in respect of sales of equipment.)

I have taken your letter at face value. I should point out that _my_
expectation from the standard and the content of your letter is that
fields of the order of 1mv per metre are acceptable, and that the
wiring system attached to the luminaire has the greatest potential for
radiating EM energy. And when you are close to the Luminaire the 
level could be exceeded. From memory, the standard says 100 microvolts
per metre at 10 metres for the frequency you stated.

Hope this has clarified the issue.

Richard A Lough




From steve@histon.demon.co.uk Wed Nov  8 10:47:25 EST 1995
Article: 3167 of sci.engr.lighting
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From: Steve G6JBZ <steve@histon.demon.co.uk>
Newsgroups: sci.engr.lighting
Subject: dmx-512
Date: Fri, 03 Nov 1995 20:51:40 
Organization: yes please !!
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X-Newsreader: Newswin Alpha 0.8.1


-- 
Some of my mail recently went astray !! As a designer of Hardware and 
Software for lighting desks/fixtures I was asked by a student in santa 
clara about extracting the Data from the DMX512 data stream via email.  
If my reply didn't reach you, I'm not withholding information for 
commercial reasons I've just had email problems, please re-send and i'll 
be happy to help.
------------------------------------------------------------------------
---
| Steve - g6jbz           EMail steve@histon.demon.co.uk |
| engineer, designer, dogsbody and general good guy.     |
------------------------------------------------------------------------
---



From andylite@aztec.co.za Wed Nov  8 10:47:25 EST 1995
Article: 3168 of sci.engr.lighting
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From: Andrea BARAUSSE <andylite@aztec.co.za>
Newsgroups: sci.engr.lighting
Subject: Re: Advise Re: Halogen vs. Incandescent for Lobby
Date: 4 Nov 1995 09:16:24 GMT
Organization: T U B O M E C        L I G H T I N G
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---------------------------------24056799524114
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 Hi,

 It is correct that by dimming you could extend the life span of your 
incandescent/halogen globe...   --- In fact is the right idea if you want 
get a lower mantenance factor ---

What I might suggest at this point is :

incandescent globe = For our Net at 220/240 volts we have acces to        
  globes  rated 260 volts. (this will under run the globe -with out       
  using a dimmer - ...)

for Halogen (low voltage)= get a transformer with  a lower secondary      
                           voltage that what is required.

By avoiding dimmer you increase the relaibility of your installation and 
on energy will be waste by controlling/drivin additional equipment.

Two last words.
 (the following are average value )

                        life  | lumin. flux | power cons.|
 5% voltage reduction = 200%  |     85 %    |      93%   | 
10% voltage reduction = 250%  |     75 %    |      85%   |

 if you are using halogen is not a good idea to go below the above values
 as other factor will come in to play with no benefit and we will  
negativly effect the life span of your globe - 
 
 
and now .......... back you ...  
I am only wander if we really brought                                    
light to you case or .. .....

 might the light be with you .. (soon ) 
 at least before some one will break a leg .

byeeeeeeeeeeeeeeeeeeeeeeeeeeee !  ( arrivederci a tutti)
  Good luck 
  
-- 
                     ----------------------------------------------   
                        ------     ANDREA    BARAUSSE    -------
                           ---     Lighting designers    ---
                             --     TUBOMEC LIGHTING    --
                               -   Ph.27 - 31-5628412  -
                                   Fx.27 - 31- 526840
                                 ----South  Africa ---
                                   ----------------
     

---------------------------------24056799524114
Content-Transfer-Encoding: 7bit
Content-Type: TEXT/PLAIN



If you install a dimmer on the line and drop the voltage about 5%, your lamp 
life will increase to about 8000 hours and the drop in intensity will not be 
very noticeable


---------------------------------24056799524114--


From dear@ix.netcom.com Wed Nov  8 10:47:26 EST 1995
Article: 3169 of sci.engr.lighting
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From: dear@ix.netcom.com (jp dear)
Newsgroups: sci.engr.lighting
Subject: Wanted. triac trigger ckt.
Date: 4 Nov 1995 07:33:39 GMT
Organization: Netcom
Lines: 4
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NNTP-Posting-Host: ix-syr1-23.ix.netcom.com
X-NETCOM-Date: Fri Nov 03 11:33:39 PM PST 1995

I'm looking for a cheap and nasty triac trigger board. Just on/off,
reliable and possibly modular. Qty 700. Thanks.

JP


From lscharff@mailman.ghgcorp.com Wed Nov  8 10:47:29 EST 1995
Article: 3170 of sci.engr.lighting
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From: lscharff@mailman.ghgcorp.com (LARRY SCHARFF)
Newsgroups: sci.engr.lighting
Subject: Test
Date: 5 Nov 1995 03:37:56 GMT
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X-Newsreader: WinVN 0.92.6+

This is only a test


From lscharff@mailman.ghgcorp.com Wed Nov  8 10:47:29 EST 1995
Article: 3171 of sci.engr.lighting
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From: lscharff@mailman.ghgcorp.com (LARRY SCHARFF)
Newsgroups: sci.engr.lighting
Subject: Re: Best Light Source for Lizards (UVA & UVB)?
Date: 5 Nov 1995 03:44:25 GMT
Organization: GHG Corporation
Lines: 10
Message-ID: <47hbup$mlt@pan.ghgcorp.com>
References: <478fuj$6bu@newsbf02.news.aol.com>
NNTP-Posting-Host: dialupline60.ghgcorp.com
X-Newsreader: WinVN 0.92.6+

In article <478fuj$6bu@newsbf02.news.aol.com>, daveoesper@aol.com (DaveOesper) says:
>
>What is the best light source to use for raising lizards?  Is there
>anything that produces an amount of UVA and UVB similar to sunlight?

Dave: I rep. Volyarc Tech. We manf. the lamp you want. E-mail me at
lscharff@mailman.ghgcorp.com , ph. 713-331-1863, fax 713-585-1016.

Thanks
Larry


From jbriggsco@aol.com Wed Nov  8 10:47:30 EST 1995
Article: 3172 of sci.engr.lighting
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From: jbriggsco@aol.com (JBriggsCO)
Newsgroups: sci.engr.lighting
Subject: Re: Advise Re: Halogen vs. Incandescent for Lobby
Date: 5 Nov 1995 00:24:21 -0500
Organization: America Online, Inc. (1-800-827-6364)
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My name is John Briggs, I'm a lighting engineer.  I think you shoul give
additional thought to the compact fluorescent idea....The lighting design
community has really embraced this technology, because of the improvement
in color, in addition to the extremely long life, low energy (and bills),
while achieving near incandescent quality.    Next I would say halogen. 
Several incandescent lamps (R30) were legeslated out of existance on
Halloween this year.  



From ddyment@netcom.com Wed Nov  8 10:47:31 EST 1995
Article: 3173 of sci.engr.lighting
Newsgroups: sci.engr.lighting
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From: ddyment@netcom.com (Doug Dyment)
Subject: Honeywell Building Automation Venture
Message-ID: <ddymentDHHuJy.51o@netcom.com>
Organization: NETCOM On-line Communication Services (408 261-4700 guest)
X-Newsreader: TIN [version 1.2 PL1]
Date: Sat, 4 Nov 1995 00:55:09 GMT
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Sender: ddyment@netcom16.netcom.com

Honeywell Home & Building Control is setting up a group in Minneapolis to 
develop LonWorks(R) based products for OEM customers.  They are in the 
process of staffing this group and looking for senior hardware and 
software engineers, preferably with LonWorks experience.  Honeywell will 
pay relocation expenses to Minneapolis (a great place to live).

So if you are, or know of, someone who might be interested in such a 
position, please contact:

Steve Peterson
Product Management
Honeywell Home & Building Controls
MN10-2493
1985 Douglas Drive North
Golden Valley, MN 55422
PH: (612) 954-6549
Fax: (612) 954-4411

----------------------------------------------------------------
Please do not contact the sender of this message; I am just passing on 
the information for a friend, because I think it's a terrific opportunity.

-- 
  <<  Doug Dyment  ==  ddyment@netcom.com  ==  +1 415 855 7430  >>


From larryc@netcom.com Wed Nov  8 10:47:32 EST 1995
Article: 3174 of sci.engr.lighting
Newsgroups: sci.engr.lighting
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From: larryc@netcom.com (Larry Ching)
Subject: Californeon(tm)
Message-ID: <larrycDHL2s2.2wu@netcom.com>
Summary: Trying to identify electroluminescent material for purchase 
Sender: larryc@netcom10.netcom.com
Organization: NETCOM On-line Communication Services (408 261-4700 guest)
Distribution: usa
Date: Sun, 5 Nov 1995 18:45:37 GMT
Expires: Tue, 28 Nov 1995 08:00:00 GMT
Lines: 31

[ Please excuse me if this has already been posted - I haven't seen it
  in my newsgroup feed yet , so I am re-sending it. ]
 
 I am trying to identify an electroluminescent material , and also possible
sources of this material.
 
 I recently purchased an auto detailing lighting kit called Californeon (tm)
, which is made by American International in California. A mention was 
made in the instructions to "... a new lighting technology derived from the 
NASA space program ...".It seems to consist of two parallel metallic strips , 
which act as two conductors , across which is painted an electroluminescent 
material , which is orange in color. This assembly is strengthened by a 
transparent plastic material that has adhesive on it. This stripe is meant to 
be used in the interior  of cars , for accent lighting.
 
 The stripe is excited by a "power pack" that converts the input automotive 
12 VDC  into an output 2Khz ac ( approx. 250V 0-peak AC ). I was able to 
excite the stripe with a 2.5khz square wave into a Radio Shack 8 ohm/1K ohm 
audio transformer. The resultant light is "white" with a slight peak in the 
green. 
 
 Does anyone know what the electroluminescent material might be? I would
like to make my own designs besides the stripe form that Californeon (tm)
is sold in , for the purposes of costuming and other such custom occasions.
I would like to identify the material , and also know where I can by the stuff
myself.
 
 
 Larry Ching / larryc@netcom.com




From 102533.1221@CompuServe.COM Wed Nov  8 10:47:32 EST 1995
Article: 3175 of sci.engr.lighting
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From: paul <102533.1221@CompuServe.COM>
Newsgroups: sci.engr.lighting
Subject: Resilver ing  Mirror
Date: 6 Nov 1995 04:42:44 GMT
Organization: pgz
Lines: 5
Message-ID: <47k3o4$qom$1@mhafm.production.compuserve.com>


Depending on the application of the mirror, vacuum coating may be the best process by which to resilver a mirror.  Most precision mirrors are manufactured this way to start with.
-- 
paul zettler
102533.1221@compuserve.com


From elliotb@ix.netcom.com Wed Nov  8 10:47:33 EST 1995
Article: 3176 of sci.engr.lighting
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From: elliotb@ix.netcom.com (Elliot Burke )
Newsgroups: sci.engr.lighting
Subject: Re: How to resilver reflectors ????
Date: 6 Nov 1995 06:21:14 GMT
Organization: Netcom
Lines: 11
Message-ID: <47k9gq$lqu@ixnews4.ix.netcom.com>
References: <1995Nov3.021409.19461@lafn.org> <NEWTNews.815385021.4849.dartprop@dartprop.moran.com>
NNTP-Posting-Host: ix-sb1-09.ix.netcom.com
X-NETCOM-Date: Sun Nov 05 10:21:14 PM PST 1995

In <NEWTNews.815385021.4849.dartprop@dartprop.moran.com> "Barry D.
Besmanoff" <dartprop@ns.moran.com> writes: 
>
>
>I don't know about it myself, but if you look in a book about antique 
>furniture restoration it should have something on resilvering
mirrors--it is a 
>common repair.
>
Look in the phonebook under mirrors or glass and you'll find someone
who offers mirrors resilvering.  


From bele@falcon.cc.ukans.edu Wed Nov  8 10:47:34 EST 1995
Article: 3177 of sci.engr.lighting
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From: bele@falcon.cc.ukans.edu (NGUYEN LE B)
Newsgroups: sci.engr.lighting
Subject: International Lighting
Date: 6 Nov 1995 10:39:28 -0500
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Hello,

Can anyone help me?  I'm doing a paper in my Advanced Lighting course
with Dr. Belcher at the University of Kansas.  I'm  interested in the
differences of lighting designs in three major regions of the world,
Japan(Asia), France and Germany(Europe), and the U.S.  I assumed that
there would be some obvious reasons for the different lighting designs
such as cultural, economic, and standards, although it is difficult to
support my assumptions.  I've asked different professionals in the
lighting industry about their knowledge of this topic, but many have
given me varying opinions such as...

Professor Moeck, Illuminating Engineering professor here at KU, has told
me that Europe tends to adopt new technological advances more easily
although cost of living and energy costs are much higher.  He also said
that European codes are much stricter; therefore, lightin design
standards are higher.  Last he stated that most importantly,
manufacturers produce a wider variety of lamps and luminaires to choose
>from  in Europe; therefore, designers have more flexibility to design.  I
also noticed when I was in France that in common places such as the
residential dormitory that I stayed in and the local small restaurants,
there was a much more common usage of contempory lighting products such
as MR-16's and timers and dimmers.  This was not common only to the big
cities such as Lyon or Paris, but also in small towns.  I was curious to
why this might not be so common in America?

On the other hand Jason Gill, a recent grad of KU who is currently
working for Fisher Morantz Lighting Designers of New York, stated that
European codes are not as strict as American codes.  For instance, their
fire codes are not as strict, and don't require enclosed boxes for
wiring, thus giving designers more flexibility.  He also added that most
Asian countries, except for Japan, Korea and others, are not as
developed and don't usually pay the extra price for quality lighting.

Dr. Belcher, stated in an article on cultural influences in lighting,
that France has lower illuminance requirements.  I also noticed that
while I was in Europe.  Most French people preferred less light even for
task lighting, and actually utilized more daylighting(a personal favorite
of mine).

In my opinion, I thought that the examples of Japanese lighting designs
were very interesting for their usage of advanced control systems while
maintaining a poetic theme.  Of course other Asian countries don't show
high-tech standards because of economics, but I am interested in the
cultural influences in lighting.  Being Asian,  this is of particular
interest to me.

If you have any comments, suggestions, or ideas that may guide me in my
research, please send a reply.  Your time is greatly appreciated.


Le Nguyen
Illuminating Engineering student                        2112 W. 15th
University of Kansas                             Lawrence, KS  66049
bele@falcon.cc.ukans.edu                               (913)842-5662




From andersonpi1@cf.ac.uk Wed Nov  8 10:47:35 EST 1995
Article: 3178 of sci.engr.lighting
Newsgroups: sci.engr.biomed,sci.engr.lighting,sci.physics.electromag
Path: bigblue.oit.unc.edu!concert!gatech!news.mathworks.com!tank.news.pipex.net!pipex!tube.news.pipex.net!pipex!plug.news.pipex.net!pipex!dish.news.pipex.net!pipex!bt!btnet!dispatch.news.demon.net!demon!sunsite.doc.ic.ac.uk!yama.mcc.ac.uk!thor.cf.ac.uk!news
From: Philip Anderson <andersonpi1@cf.ac.uk>
Subject: High Temperature Superconductivity
Sender: news@cf.ac.uk (USENET News System)
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Date: Mon, 6 Nov 1995 16:14:34 GMT
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I'm researching an essay on high temperature superconductors for an Msc 
in Electromagnetics and would like to know if anyone has come across any 
articles on this subject in terms which an engineering student could 
understand.

Thanks.

Philip Anderson,
UWCC, Cardiff.




From andersonpi1@cf.ac.uk Wed Nov  8 10:47:36 EST 1995
Article: 3179 of sci.engr.lighting
Newsgroups: sci.engr.biomed,sci.engr.lighting,sci.physics.electromag
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From: Philip Anderson <andersonpi1@cf.ac.uk>
Subject: High Temperature Superconductivity
Sender: news@cf.ac.uk (USENET News System)
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I'm researching an essay on high temperature superconductors for an Msc 
in Electromagnetics and would like to know if anyone has come across any 
articles on this subject in terms which an engineering student could 
understand.

Thanks.

Philip Anderson,
UWCC, Cardiff.




From Michael_Siminovitch@macmail3.lbl.gov Wed Nov  8 10:47:37 EST 1995
Article: 3180 of sci.engr.lighting
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From: Michael_Siminovitch@macmail3.lbl.gov (Michael Siminovitch)
Newsgroups: sci.engr.lighting
Subject: Re: FWD>FW- Street Lighting
Date: 6 Nov 1995 12:07:51 -0500
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        Reply to:   RE>FWD>FW: Street Lighting International Query

Chris give me a call I can recommend some folks that I am working with in the outdoor lighting area. I am doing some exterior
lighting demos

--------------------------------------
Date: 11/6/95 8:53 AM
To: Michael Siminovitch
From: Erik Page
this from the net group

--------------------------------------
Date: 11/6/95 6:50 AM
From: Lighting@garnet.nist.gov

CAGranda@aol.com posted the following message on the AESP-Net listserv:

I am looking for energy efficiency professionals with experience in street
and public area lighting who might be interested in contracting to a
potential World Bank/International Finance Corporation project.







From rjohns@bnr.ca Wed Nov  8 10:47:38 EST 1995
Article: 3181 of sci.engr.lighting
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From: rjohns@bnr.ca (Rick Johns)
Newsgroups: sci.engr.lighting
Subject: Fluorescent temperature?
Date: 6 Nov 1995 18:51:42 GMT
Organization: Bell-Northern Research Ltd.
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I made a little enclosed reflector for a 20 watt compact fluorescent to
light a fish tank, but I'm concerned that there's not enough ventilation.
It's at least 125F in there.  Will that burn the bulb out quickly?

-- 
Cheers,
 Rick Johns
 Bell-Northern Research
 rjohns@bnr.ca


From joem@skypoint.net Wed Nov  8 10:47:38 EST 1995
Article: 3182 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!newsfeed.internetmci.com!in1.uu.net!dove.nist.gov!gateway
From: joem@skypoint.net (Joe Mann)
Newsgroups: sci.engr.lighting
Subject: Re: FW: Street Lighting International Query
Date: 6 Nov 1995 16:38:27 -0500
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At 01:27 PM 11/3/95 -0800, you wrote:
>
>CAGranda@aol.com posted the following message on the AESP-Net listserv:
>
>I am looking for energy efficiency professionals with experience in street
>and public area lighting who might be interested in contracting to a
>potential World Bank/International Finance Corporation project.
>

Where is the location(s) of the jobs?  Has the job been specified as to
manufacturer?  Is there any retorfit work included?

I sell several lines energy efficient lighting products, and may be able
to assist you in locating qualified people to do the job...  Dick Mann
of our company is a lighting engineer with 25+ years of experience.

Joe Mann  Mann & Associates
612.835.6612

                   _\|/_
                   (o o)
 ---------------oOO-(_)-OOo----------------
| joem@skypoint.com        73's de: KA0YUA |
|    www.skypoint.net/subscribers/joem/    |
 ------------------------------------------



From pbradfield@aol.com Wed Nov  8 10:47:39 EST 1995
Article: 3183 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!newsfeed.internetmci.com!in1.uu.net!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail
From: pbradfield@aol.com (PBradfield)
Newsgroups: sci.engr.lighting
Subject: Re: Advise Re: Halogen vs. Incandescent for Lobby
Date: 6 Nov 1995 17:15:04 -0500
Organization: America Online, Inc. (1-800-827-6364)
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NNTP-Posting-Host: newsbf02.mail.aol.com

Cool White FL is also being legislated out of existantce too.


From uncleal0@ix.netcom.com Wed Nov  8 10:47:40 EST 1995
Article: 3184 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!ix.netcom.com!netnews
From: Alan \"Uncle Al\" Schwartz <uncleal0@ix.netcom.com>
Newsgroups: sci.engr.biomed,sci.engr.lighting,
Subject: Re: High Temperature Superconductivity
Date: 6 Nov 1995 23:29:01 GMT
Organization: Netcom
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To: andersonpi1@cf.ac.uk
Xref: bigblue.oit.unc.edu sci.engr.biomed:5375 sci.engr.lighting:3184

Both Scientific American and Science have within the past three years had 
several very nice articles on perovskite hi-temp superconductors.  

I would also look at back issues of Physics today and American Scientist.

-- 
Uncle Al knocks upon your door bearing gifts and gnosis.  Are you 
sliding down the razor blade of life?  Yowl with Uncle Al!

     http://vvv.com/adsint/freehand/uncleal/

Uncle Al is mind candy for the severely gifted.  Cool Site of the Day, 
Spider's Cool Places, Seeress of the Web vision, BIG List Way Cooool 
Award, Terra IncogNETa STICK feature, Odin's Sighting of Today... 
Updated every weekday for 10,000+ visitors!

Uncle Al is a WonderBra for your frontal lobes.  Hoist those puppies!


Alan "Uncle Al" Schwartz
uncleal0@ix.netcom.com  ("zero" after "uncleal")
http://vvv.com/adsint/freehand/uncleal/
"Quis custodiet ipsos custodes?"  The Net!




From sjhart@voxel.com Wed Nov  8 10:47:41 EST 1995
Article: 3185 of sci.engr.lighting
Newsgroups: sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!newsfeed.internetmci.com!news.sprintlink.net!news.nis.net!Sessions.voxel.com!usenet
From: sjhart@voxel.com (Stephen J Hart)
Subject: Re: Pressure in a tungsten halogen bulb
Message-ID: <DHMuD7.5qF@voxel.com>
X-Posted-From: InterNews 1.0.5@stephenmac.voxel.com
Lines: 27
Sender: sjhart@homer.voxel.com
Organization: VOXEL
References: <DHEECo.Jwr@voxel.com>  <perryDHFoF2.6ws@netcom.com>
X-Authenticated: sjhart on POP host homer.voxel.com
Date: Mon, 6 Nov 1995 17:39:07 GMT

In article <perryDHFoF2.6ws@netcom.com>
perry@netcom.com (Perry West) writes:

> To the best of my recollection, the halogen lamp envelopes must operate 
> at a temperature around 700 degrees Farenheit (approx 390 degrees 
> Celsius), not 50 degrees!  I also seem to recall the interal operating 
> pressure being 2 to 3 atmospheres.

Yes, that's right. But apparently the safety spec is written in terms
of the internal pressure at 50 degrees C (with a mandated formula to
convert for other temperatures). I don't know why!

> I am not certain about these nubers, but do know that the envelopes must 
> run very hot for the halogen cycle to work, and that the pressure is high 
> enough for explosion to be a possibility if the bulb is damaged.

We've designed the bulb into an enclosure where any explosion would be
contained safely. But to label it correctly we still have to know if
the bulb is "high pressure" or not according to the standard's formula.


Stephen J Hart                      fax              +1 (714) 348-8665
Director of R&D                     e-mail            sjhart@voxel.com
                                    WWW URL       http:/www.voxel.com/

VOXEL, 26081 Merit Circle, #117,    The opinions and "facts" expressed
Laguna Hills, CA 92653-7017, USA    herein are not necessarily correct


From info@aecnet.com Wed Nov  8 10:47:42 EST 1995
Article: 3186 of sci.engr.lighting
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From: info@aecnet.com (AECNET Info Center)
Newsgroups: sci.engr.lighting
Subject: Lighting Designers Get Free Net Access
Date: Mon, 06 Nov 1995 20:20:33 +0100
Organization: AECNET
Lines: 81
Message-ID: <info-0611952020330001@homer.aecnet.com>
NNTP-Posting-Host: homer.aecnet.com

PRESS INFORMATION

Contact: Gene Simon
(516)754-3020

FOR IMMEDIATE RELEASE


AECNET and IALD to Provide Free Internet Access for IALD Members

November 6, 1995 - Northport, NY - AECNET - The Electronic Resource
Network of Architecture, Engineering and Construction - entered into an
agreement to provide members of the International Association of Lighting
Designers (IALD) with free access to the Internet, including free access
to the AECNET Internet Bulletin Board System (BBS) and World Wide Web
site.  AECNET will work with the IALD and other lighting industry
organizations to establish LightNET, a section of AECNET dedicated to
serving lighting professionals worldwide.

AECNET is using its agreement with the IALD to showcase its innovative use
of the Internet as a tool in enhancing membership services and
peer-to-peer communications among the members of a professional society. 
AECNET is confident that this will open the door for other professional
associations with the design and construction industry to follow this
model.

"We are very happy to be able to provide this service to the IALD", said
Drew Linsalata, president and CEO of AECNET.  "It is another step toward
making AECNET the electronic center of the design and construction
community. This agreement is the first of its kind in the industry and is
a sign of the times.  The IALD recognizes the importance of staying on top
of emerging technology and providing its membership with the benefits of
these technologies.  We are certain that we will all benefit from this
process."This agreement will provide our members with valuable information
with the click of a mouse," stated Kenneth E. Yarnell, president of the
IALD.  "These services represent a powerful tool for the professional
lighting designer.We are pleased that we are able to offer them as a free
member benefit.  The IALD represents the leaders in the lighting design
industry, and we feel that by working with AECNET to build a
state-of-the-art communications network, we will enter the 21st century as
a stronger and more influential organization."

Every IALD member will receive a package including free software that will
allow them to access the Internet, including the LightNET World Wide Web
site (http://www.aecnet.com/lightnet/) and the LightNET Internet Bulletin
Board System (BBS).  AECNET and the IALD have planned various educational
programs to enlighten the IALD membership on the use of on-line tools in
daily business.  It is expected that these programs will contribute to a
high level of system usage.

Studies conducted by both AECNET and the IALD have shown that lighting
product information is the item most desired by over 87% of lighting
professionals.  The LightNET service will respond to that demand by
encouraging lighting product manufacturers to showcase their products
on-line.  Promotional packages include space on both the LightNET World
Wide Web site and the LightNET BBS.  In these arrangements, manufacturers
are able to combine the benefits of the popular World Wide Web with the
interactive nature of a BBS to take advantage of this electronic gathering
of the world's most influential lighting specifiers.  A tiered approach to
product promotion on-line is planned, allowing manufacturers of all sizes
to access these specifiers on the LightNET service.

The IALD's Lighting Industry Resource Council, an organization comprising
both lighting designers and product manufacturers, will act to provide the
framework needed to standardize the methods of communication between the
lighting specifier and the lighting product manufacturer on-line.

Founded in 1969, the IALD is a professional organization dedicated to the
advancement of lighting excellence in the built environment. The
Association serves the interests of professional lighting designers and
communicates the benefits of designed lighting.

AECNET is dedicated to gathering, organizing, and electronically
delivering valuable information and service resources, and easy to use
communication tools for professionals in the AEC industry.  The AECNET
team is combining open World Wide Web and Internet based Bulletin Board
services to provide design and construction professionals with a wealth of
vital and current information and resources covering both technical and
business related issues.

#          #           #


From littrox@richmond.infi.net Wed Nov  8 10:47:43 EST 1995
Article: 3187 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!newsfeed.internetmci.com!in1.uu.net!dove.nist.gov!gateway
From: littrox@richmond.infi.net (Charles Troxell)
Newsgroups: sci.engr.lighting
Subject: Re: FW: Street Lighting International Query
Date: 6 Nov 1995 22:26:46 -0500
Organization: NIST
Lines: 56
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <199511070221.VAA18044@larry.infi.net>
NNTP-Posting-Host: dove.nist.gov
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"

>
>CAGranda@aol.com posted the following message on the AESP-Net listserv:
>
>I am looking for energy efficiency professionals with experience in street
>and public area lighting who might be interested in contracting to a
>potential World Bank/International Finance Corporation project.
>
>
>
>
>
>CAGranda@aol.com posted the following message on the AESP-Net listserv:
>
>I am looking for energy efficiency professionals with experience in street
>and public area lighting who might be interested in contracting to a
>potential World Bank/International Finance Corporation project.
>
>
>
>
>
Lighting Images Technology, Inc. is interested in street lighting projects.
Our experience for the past two years has been in a street lighting
evaluation and consulting contract for the City of Richmond, Virginia. (pop
200K)  Areas of concern are meeting IES/ANSI standards as well as crime
prevention and reduction efforts.

Presently we are working on a small contract for street lighting for
Historic Colonial Williamsburg, VA.  This contract requires the retrofit of
existing 60 + year colonial post top luminaires for modern light sources as
well as new reflector technology.

Our largest area of expertise is in outdoor lighting, particulary street,
and area lighting.  Our skills involve the use of many Lighting Computer
Aided Design Programs, as well as AutoCAD, etc.

We are most interested in overseas projects in the pacific rim and Australia
and Asia.  We presently have an Australian Counterpart and we trade through
that counterpart as LIT International Design Consortium with offices in Sydney.

Please forward our name to the interested party.

Charles Troxell, MIES, Certified Lighting Efficiency Professional
Lighting Images Technology, Inc.
11301 Perdido Court
Midlothian, VA 23112
804 744 2349 Vox or Fax
Charles Troxell, MIES
Lighting Images Technology
11301 Perdido Court
Midlothian, VA. 23112

"The Meek Shall Inherit The Earth, While The Rest Of Us Journey To The
Stars"
LIT International Design Consortium, Australia/USA/ Worldwide Lighting Services



From keithd@bechtel.Colorado.EDU Wed Nov  8 10:47:43 EST 1995
Article: 3188 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!newsfeed.internetmci.com!in1.uu.net!dove.nist.gov!gateway
From: keithd@bechtel.Colorado.EDU (KEITH  DAVID MIDDLEBROOK)
Newsgroups: sci.engr.lighting
Subject: Re: FW: Street Lighting International Query
Date: 7 Nov 1995 01:42:41 -0500
Organization: NIST
Lines: 23
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <199511070642.XAA18277@bechtel.Colorado.EDU>
References: <1995Nov03.100519.1030.74075@wseo.wa.gov>
NNTP-Posting-Host: dove.nist.gov
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit

>
>
> CAGranda@aol.com posted the following message on the AESP-Net listserv:
>
> I am looking for energy efficiency professionals with experience in street
> and public area lighting who might be interested in contracting to a
> potential World Bank/International Finance Corporation project.
>

Hello -

I received this message through the sci.engr.lighting listing I believe.

I am qualified according to this brief description, and interested in discussing
and my company.  For business purposes I use my account at
keithd@enfo.com.

You may also find my (brief) home page at http://enfo.com/~keithd/home.html.

Looking forward to hearing from you -


David M. Keith


From lwilton@BIX.com Wed Nov  8 10:47:44 EST 1995
Article: 3189 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!newsfeed.internetmci.com!elvis.delphi.com!news.delphi.com!usenet
From: lwilton@BIX.com (Loren Wilton)
Newsgroups: sci.engr.lighting
Subject: Re: Pressure in a tungsten halogen bulb
Date: 7 Nov 1995 08:53:00 GMT
Organization: Delphi Internet Services Corporation
Lines: 25
Message-ID: <47n6pd$8dc@news1.delphi.com>
References: <DHEECo.Jwr@voxel.com>
Reply-To: lwilton@BIX.com (Loren Wilton)
NNTP-Posting-Host: bix.com
X-Newsreader: NetBix 1.171
X-Newsreader-Author: lwilton@BIX.com (Loren Wilton)
    This message has been posted with development version software.
    If there are any problems with the message format, send me mail.

In article <DHEECo.Jwr@voxel.com>, sjhart@voxel.com (Stephen J Hart) wrote:
>I'm working on a new special purpose illuminator for holographic
>display. I need to label it properly as regards UL-122 and 1950 and CE.
>To do so I need to know if the bulb I've selected is considered "high
>pressure" or not. The standards tell me how to calculate this, but to
>do so I need to know the bulb pressure in atmospheres at 50 degrees
>centigrade.

I do not know what the regulators consider "high pressure".  However,
theatrical experience with these sorts of lamps would indicate that they
are "low pressure".  I have never seen one explode, even as badly as a
normal incandescent would do when operating.  Mostly they fail by melting
a hole in the side of the bulb, if they suffer envelope failure at all.
I believe that they are at a significantly lower than atmospheric pressure
at normal temperatures, and probably only run a few atmospheres when hot.

Zenon arc lamps *ARE* high pressure instruments.  They require special
lamp houses, interlocks, and elaborate transport cases for new and used
lamps and elaborate procedures for safe relamping.  The cases the lamps
come in are *plastered* with warning stickers.  I would suggest a lack of
such warning stickers on normal halogen lamps is a good indication that
they are not classified as high pressure instruments.

	Loren
	


From mrdonn@lbl.gov Wed Nov  8 10:47:45 EST 1995
Article: 3190 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!newsfeed.internetmci.com!in1.uu.net!dove.nist.gov!gateway
From: mrdonn@lbl.gov (Michael Donn)
Newsgroups: sci.engr.lighting
Subject: Re: International Lighting
Date: 7 Nov 1995 14:28:46 -0500
Organization: NIST
Lines: 146
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Mime-Version: 1.0
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At 09:38 AM 11/6/95 -0600, you wrote:
>
>Hello,
>
>Can anyone help me?  I'm doing a paper in my Advanced Lighting course
>with Dr. Belcher at the University of Kansas.  I'm  interested in the
>differences of lighting designs in three major regions of the world,
>Japan(Asia), France and Germany(Europe), and the U.S.  I assumed that
>there would be some obvious reasons for the different lighting designs
>such as cultural, economic, and standards, although it is difficult to
>support my assumptions.

Well, here goes: I feel somewhat wary of stepping into these waters
they promise to be very deep! However, your query, while interesting, needs
 clarification. I understand from the end of your note that you are particularly
 interested in the cultural differences in light(ing) use. My first
suggestion would be
 that you concentrate on ONE aspect of the triad of cultural, economic and
standards
"reasons" for differences that you suggest in your opening paragraph above. One
alone is likely to be sufficient for any graduate paper that I can think of
- in fact
the cross cultural issues could easily be expanded into a PhD or two?

The more i think about your subject, the more I worry that we do not know
enough to be able to do more than posit a rough guess. I wonder whether a
Delphi survey of
a range of volunteer professors from the light@garnet list would not be a
better way of at least "organising" the opinions that you are likely to be
gathering?

Let me illustrate: I (like a number of others in the lighting area) am fond
of starting
my lighting course for interior designers with the psychophysics: photopic
response
curves for the human eye and performance versus illuminance curves for simple
tasks like the landolt ring test are great experiments to engage and involve
the
attention. We all use these as starting points for then talking about the
illuminance
levels in codes and standards. At this point, I am wont to point out that the
decision about what level of light to select as the minimum for a particular
task is mostly an economic one: one balances the cost of electricity and
lighting
equipment against the performance / error rate that is judged to be acceptable.
One often finds coda in standards which suggest that one should move up to
the next
level of illuminance of the task, if the "risk" from making a mistake is high.

To my knowledge, the response curves that we use to base these economic
decisions
on are drawn from one or possibly two Western countries' laboratory
measurements.
We assume they are universal, and largely unaffected by the lifetime one may
have spent in a different culture. But, we don't check this assumption. So
there may
be two confounding variables here: the differing economic decisions made by
each country in setting minimum performance through codes or deciding on
 standards of good design and the differing culturally derived expectations of
light.

My suggestion? limit yourself to one area that is simple to examine. The recent
discussion on id-forum of the cultural differences in reactions to colour may
give a lead here: what about looking at something really easy to isolate and
try to
see if there are differences: survey a range of asian and non-asian restaurants
in downtown Lawrence? Try to see whether the restaurants  which serve the
local asian community have lighting differences to their similar price range
 counterparts which do not. Make your own observations and talk to the owners.
Depending on the size of town, you may even be able to discern more subtle
differences between vietnamese/chinese on one hand and french/italian on the
other?

Whatever you find, I would be interested to hear about, as I have been
intrigued by
 your query.

Mike Donn


>  I've asked different professionals in the
>lighting industry about their knowledge of this topic, but many have
>given me varying opinions such as...
>
>Professor Moeck, Illuminating Engineering professor here at KU, has told
>me that Europe tends to adopt new technological advances more easily
>although cost of living and energy costs are much higher.  He also said
>that European codes are much stricter; therefore, lightin design
>standards are higher.  Last he stated that most importantly,
>manufacturers produce a wider variety of lamps and luminaires to choose
>from in Europe; therefore, designers have more flexibility to design.  I
>also noticed when I was in France that in common places such as the
>residential dormitory that I stayed in and the local small restaurants,
>there was a much more common usage of contempory lighting products such
>as MR-16's and timers and dimmers.  This was not common only to the big
>cities such as Lyon or Paris, but also in small towns.  I was curious to
>why this might not be so common in America?
>
>On the other hand Jason Gill, a recent grad of KU who is currently
>working for Fisher Morantz Lighting Designers of New York, stated that
>European codes are not as strict as American codes.  For instance, their
>fire codes are not as strict, and don't require enclosed boxes for
>wiring, thus giving designers more flexibility.  He also added that most
>Asian countries, except for Japan, Korea and others, are not as
>developed and don't usually pay the extra price for quality lighting.
>
>Dr. Belcher, stated in an article on cultural influences in lighting,
>that France has lower illuminance requirements.  I also noticed that
>while I was in Europe.  Most French people preferred less light even for
>task lighting, and actually utilized more daylighting(a personal favorite
>of mine).
>
>In my opinion, I thought that the examples of Japanese lighting designs
>were very interesting for their usage of advanced control systems while
>maintaining a poetic theme.  Of course other Asian countries don't show
>high-tech standards because of economics, but I am interested in the
>cultural influences in lighting.  Being Asian,  this is of particular
>interest to me.
>
>If you have any comments, suggestions, or ideas that may guide me in my
>research, please send a reply.  Your time is greatly appreciated.
>
>
>Le Nguyen
>Illuminating Engineering student                        2112 W. 15th
>University of Kansas                             Lawrence, KS  66049
>bele@falcon.cc.ukans.edu                               (913)842-5662
>
>
>
>
>
__________________________________________________________________________
=============================================================
Michael Donn                                    email    UNTIL 20/2/96:
mrdonn@lbl.gov
School of Architecture Victoria University      phone    UNTIL 20/2/96: +1
510 486 7079
                                                  fax       UNTIL 20/2/96:
+1 510 486 4089
CURRENTLY ON SABBATICAL LEAVE AT           www      http://www.arch.vuw.ac.nz
Ernest Orlando Lawrence Berkeley Laboratory cserve    72561,130
Windows and Daylighting Group
mailstop 90-3111, 1 Cyclotron Rd
Berkeley, CA 94720, USA



From schmidt@sdd.hp.com Wed Nov  8 10:47:46 EST 1995
Article: 3191 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!newsfeed.internetmci.com!chi-news.cic.net!newsspool.doit.wisc.edu!night.primate.wisc.edu!sdd.hp.com!nobody
From: schmidt@sdd.hp.com (Jack Schmidt)
Newsgroups: sci.optics,sci.engr.lighting
Subject: Nichia contact?
Followup-To: sci.optics
Date: 7 Nov 1995 21:48:25 GMT
Organization: Hewlett-Packard, San Diego Division
Lines: 12
Distribution: world
Message-ID: <47ok79$8cj@news.sdd.hp.com>
NNTP-Posting-Host: hpsdlmx1.sdd.hp.com
Xref: bigblue.oit.unc.edu sci.optics:15925 sci.engr.lighting:3191


Thanks to those who responded to my inquiry about public domain
spectral software.

Now I'm looking for a contact at Nichia, a Japanese company that
produces phosphors and GaN LEDs.  Anybody?


Jack Schmidt

(Note: "Followup-To:" is sci.optics)



From littrox@richmond.infi.net Wed Nov  8 10:47:47 EST 1995
Article: 3192 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!newsfeed.internetmci.com!news.sprintlink.net!news.infi.net!usenet
From: littrox@nc5.infi.net (Charles Troxell)
Newsgroups: sci.engr.lighting
Subject: LD+A Magazine Article (Nov95 Issue) Illuminating Bytes Column
Date: 8 Nov 1995 00:16:01 GMT
Organization: Lighting Images Technology, Inc.
Lines: 212
Message-ID: <47oss1$h0r@news.infi.net>
Reply-To: littrox@richmond.infi.net
NNTP-Posting-Host: h-olive.richmond.infi.net
X-Newsreader: WinVN 0.92.6

To: sci.engr.lighting
From: littrox@nc5.infi.net (Charles Troxell)
Subject: LD+A MAGAZINE (Nov95) Illuminating Bytes Article
Organization: Lighting Images Technology, Inc.
Date: Tue, 07 Nov 95 18:45:31 PST
Reply-To: littrox@richmond.infi.net
X-Mailer: WinVN 0.92.6

 SURFING THE NET FOR LIGHTING!!!!!!

Lighting history being made, this article will be published on the INTERNET 
to reach lighting professionals that may not be members of the IESNA at the same
time it’s being printed in LD+A Magazine.  This is the draft copy, and un-edited by
the LD+A Staff.

For some time I have used a commercial on line service for some e-mail and 
really was not all to pleased with it, the software was slick and polished, 
and it was neat to use.  It chugged along at 9600 baud and down loads became
a frequent problem.  Particularly a long one like  the AutoCAD R13 patches.
This was a run for 75 minutes on premium pay forum time. 
Maybe you have been there, about 40 minutes into the down load, the modem 
disconnected.  The service  was not a bad deal, about ten dollars a month 
for about 15 hours connect time on basic services, but nothing much happens
on basic services.

About four months ago I switched to the INTERNET and frankly was not very fond
of it either.  I did it as a "look see" thing so I might report back to the IESNA
Computer Committee.  The fee is a bit steeper, but you're going at 19,200 baud and
things speed up proportionally.
My present service is INFI.NET from down in Tidewater Virginia.   
It’s a local out fit, but it’s growing fast and has links with CBS, several newspapers 
and more than a few subscribers in Virginia, and about 10 other states.  
There are a host of providers both big and small.  Most commercial on line services
now have some sort of INTERNET arrangement.  INFI.NET’s price was right, about 65.00
to sign up which included the software package that would turn you into a real net surfer.
The monthly fee is 15.00 for my connection and that gives me 10 hours on the net and I 
have yet to use all of it up in a month.

CompuServe allows about three hours in their basic package, the browser is another
20.00 download fee. The browser offers you just about everything except the ability
to produce a Home Page or URL(more later). The basic package that was a freebie allowed 
you to use USENET news.  I noted that the news took longer to show up on CompuServe and 
there was less of it as far as lighting was concerned. This shows me that CompuServe was 
merely subscribing to NIST mail.  Clay Belcher,Phd,  IES, at Kansas U monitors the site 
for the mailing list.  You’ll learn that a lot of IES members work the web.  It’s like 
a once a week meeting.  Local Section news is showing up on the sites as well.

Getting on the Net

You will need to become set up for the net.  The amount of hard disk space you will need
depends on what your doing.  If you are down loading a lot of graphic files you will need 
all of the extra space that you can muster.  Base memory, well my machine with 16 meg seems 
to do fine.  But, I will be running 32 meg in another machine in a couple of days and maybe 
I will see some difference in the loading of some of the home pages with a lot of graphics.

You will need a web browser and other utilities.  Windows based software is preferred by me.  
I use Netscape, it was in a nice software package sent with my sign up fee from my service 
provider.  It’s a reduced feature version that allows you to update to the latest version at 
a small fee.  Frankly speaking, I have not updated yet and want to get my feet firmly planted 
before doing so. You will also need a couple of other utilities.  One is going to be FTP so 
you can down load binary files (programs).  These can be anything from graphics files 
to programs.  You also will need a mail package, my provider sent Eudora another reduced 
feature program that can be updated. I also received a host of other utilities such as 
Gopher and Lview and Archie.  One of the most important utilities is WinVN (News).  
This is your USENET news viewer. It allows you to visit the USENET groups.  There are 
over 3400 news groups on the net.  And it’s with this utility that you will find yourself 
reading and working the sci.engr.lighting news group. USENET is  a network of about 4.5 
million users from all walks of life.
The lighting types post questions and seek answers, make contact, get technical help and 
meet one another through the USENET.  You can post an article on USENET and that is how this
months LD+A article was started. Reply’s can come back to you pure e-mail (your eyes only)
or as attachments to the original article.

Looking for Lighting Sites
Moving around the INTERNET can be a little overwhelming for the new user.  If you get on the
browser and tell it to find ‘lighting’ you really may come back with nothing at all.
There are several search engines you can use.  These may or may not get you what you want. 
I hope to take my small experience and put it here to help you navigate cyber space a bit
easier.  

When you become started I’ll tell you right off to go to USENET news.  Read the articles,
if you can help put your two cents worth in.  That’s the reason it's there.  USENET is pure
UNIX to UNIX communication and you can cash in on the experience on you PC or Mac thanks to
programs and decoders such as WinVn (News).  The are certain protocols and etiquette to be
observed.  Such as little letters in addresses such as littrox@richmond,infi.net, my mail
address. You can use caps in the text but not the address.  Many just do away with the 
capitol letters completely.  Anything commercial that you put on the service is considered
a cheap shot and you might be slammed for it.  ALL CAPITAL LETTERS IS CONSIDERED SHOUTING 
and $&*^!~ profanity is done as in this example.  The USENET  will give you more for your
money as far as information swapping goes than anything else.  You can answer an article by
creating another about it or you can get the author’s e-mail address and give a private reply.
I do most of my replies off line to save my time. I log back on and then mail everything at 
once. This site is managed by NIST (National Institute of Standards and Technology).  When
you first land on this site, feel free to subscribe and you will get about 6 to 10 pieces of
mail per day.  This saves you some net time rather than reading on line. Download your mail, 
sign off, read it, reply to it off-line.  Then sign back on and send it.

LIGHTING SITES:

Looking for some lighting sites gave me a few hours of use, without too much payback.
I decided that I wanted to do this article to ease the transition for my readers.  I had 
a listing of a few sites such as RPI’s, Lighting Research Institute’s home page.  There was
Phil Morrow’s home page and John Rowe’s and Mike Litman’s,  The Lighting Resource and Greg
Ward’s Radiance site at LBL.  These were pretty well known.  Now how does one find a bunch 
of site’s?  Simple, compose an article on the USENET stating that you need all the lighting 
sites that you can find.  Posting the article took about 10 minutes and half that time for 
it to hit the INTERNET.  Within hours I had incoming mail.  After a couple of days I had 
18 replies and they are still coming in.  Replies from all over the world.  From the United 
Kingdom, Australia, Canada, and the US.  One very useful reply came from Martin Lupton at the 
School of Architecture, in Liverpool, England.  It involved the use of the WebCrawer Search 
engine.  My previous experience with search engines on the INTERNET has not been that rewarding.
But going to the URL’s home page and typing in ‘lighting’ gave me over 100 sites in about two 
or three minutes.  You have to filter them out some, as the search engine is going to take in
the word lighting in the broadest sense.  The program keeps hitting the web and constantly 
updates itself.  I will list some of the better sites at the end of this article and you can 
try them for yourself.

HOME PAGES:

The INTERNET is going commercial, it’s lost its federal backing to a great degree.  I do not 
know who supports the overseas sites, but in this country it continues to grow thanks to a 
host of Universities and Government facilities such as NIST who still run servers.  I believe 
there is a growing activity with web servers being run by commercial services and businesses.  
You may want to post a Home Page, it’s a good form of advertising and you could get a lot of 
hits (readers) for a little money.

Software is available that will take your word processor document and convert it to hyper text 
markup language (HTML).  Also available and not too expensive are html  editors that do a nice 
job.  And for a few dollars you can go out on the net and have a professional job done.  Cost 
for a professional job is not bad.  Cost will vary with the number of pages and the number of 
links that you need.  My local service provider charges ten dollars a month for a three meg 
page.  This is not a huge page and you can take a lot of bytes in a single graphics sandwich.  
I happen to think that it’s best to have someone create your page for you and if the job is 
well done you will get more hits (readers).

If you are a lighting type and want a lighting intensive home page get in touch with 
Phil Morrow at pmorrow@cyberspc.mb.ca, Phil’s home page is one of the better lighting pages 
and he will not only know what your talking about, but will steer you in the right direction.  
There are commercial services out there that will create you a page if you want.  These can 
cost from as little as 35.00 to a 1000.00 each.  I think that about 75.00 will get you what 
you want and need.

Crawling around the web is a lot of fun.  Evenings can get hectic and you will see a lot of 
traffic then.  I usually connect during the day time and meet less home traffic.

Lighting Home Pages abound, and you can look and touch and even get demo’s on lighting and 
programs.  More and more manufacturers are starting to show an interest in HTML, URL sites.  
The web is going commercial.  It’s not all that bad either.  First off you have a connect, 
faster than snail mail (Post Office) and you will find everyone pitching in and helping each 
other.  Occasionally you will see something on the sci.lighting.eng USENET that has nothing 
to do with lighting, this is a SPAM.  Though this USENET location is one of the better.  You 
can bet when this happens someone is going to “SLAM” the originator of that message.


There is an on going effort for the lighting community to opt off for AECNET, which is 
a commercial venture.  I feel that you will see the IES and some others migrate there.  But, 
I will bet that it will not affect the down to earth approach and camaraderie that takes place 
on the pure INTERNET hook up.  Also, I believe you will find that for the biggest bang for your 
buck, you will find it on the net.  I promised some sites for you to look at.  Well here’s a 
list that you can start with.  Neither the IES nor I have checked all of them out, but they 
are up and running at the time of this article.  

This is only a partial listing, as my “column length runneth over.”  There are literally near 
a thousand sites to access, but my “wallet runneth dry.”  

Home Pages:
http://www.mbnet.mb.ca/pmconsult/corner.html. 
http://radsite.lbl.gov/radiance/HOME.html
http://innernet.com/radiance/home.html (Germany)
http://www.equinox.net/equinox/
http://www.i3./LjusArk/la_home.htlm
http://www.webcom.com/~lightscr/
http://www.webcrawler.com (enter lighting as search engine criteria, hold on to your hat,
 start with last 100 listings)
ftp://scorpion.cowan.edu.au/pub/lighting/lx-links.htm (Australia)
http://www.mbnet.mb.ca./pmconsult/corner.html
http://solstice.crest.org/efficiency/iris/inter.light/
http://www.rpi.edu/dept/lrc/links.html (LRC RPI Links to Lighting Industry, and other 
	Home Pages)
http://linnet.ca/pmconsult/corner.html (Another P. Morrow Site with IESNA Canada News,and 
	Manufacturers)
http://lightscape.com/features.html (Lightscapes Software)
http://lightscape.com/mail.html (Lightscapes Inquiries, tech support etc.)
http://w3imagis.imag.fr/images/index.html
http://irisinc.com/inter.light  (this one’s loaded)


E-Mail
iald@aecnet.com
lightsrc@ix,netcom.com
eicbbs.wseo.wa.gov (Washington State Energy BBS)

Oh Yes, you can reach me at littrox@richmond.infi.net
Send your favorite sites and I will try to maintain a listing, which I will post 
once in a while.

SIDEBAR:
For the new Windows 95 user try this one.

Put your arrow (cursor) on the desktop, click the right button. Select “New Folder”.  
Name the folder “and now, the moment you all have been waiting for” (without the quotes””). 
Right click the folder and then click rename it “we proudly present for your viewing pleasure”,
(again with out the quotes).  Right click again and rename it “The Microsoft Windows 95 Product 
Team!” (no quotes). Click to open the folder, and you’ll get eight minutes of music and clouds 
and names including Big Bill himself.

xxx

Charles Troxell, MIES





From pmorrow@cyberspc.mb.ca Wed Nov  8 10:47:47 EST 1995
Article: 3193 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech!howland.reston.ans.net!spool.mu.edu!usenet.eel.ufl.edu!news.interlog.com!winternet.com!dimensional.com!news-out.internetmci.com!newsfeed.internetmci.com!in2.uu.net!news1.digital.com!decwrl!tribune.usask.ca!canopus.cc.umanitoba.ca!news
From: pmorrow@cyberspc.mb.ca (Phil Morrow)
Newsgroups: sci.engr.lighting
Subject: Lighting in Canada-WWW Site
Date: Tue, 07 Nov 1995 15:29:10 GMT
Organization: Phil Morrow Consulting
Lines: 44
Message-ID: <47ntdl$4bm@canopus.cc.umanitoba.ca>
NNTP-Posting-Host: 198.163.240.125
X-Newsreader: Forte Free Agent 1.0.82

Lighting in Canada is a Web site (since Nov.94) devoted to providing
information on the lighting industry, with an emphasis on Canada.

This is a non-profit venture (labour of love) that provides free
listings for Canadian lighting designers and consultants, and for new
Canadian products and services. 

Interesting links to lighting information, products, and services
worldwide are provided and are welcome as well. If you know of an
interesting site, let me know.

There are areas for IES Section news, Winnipeg and Toronto are
currently participating, and your section is invited to participate as
well.
A new section for the activities of the IALD in Canada is under
development and any IALD members in Canada are invited to participate
and e-mail me with suggestions as to content or to provide their own.

Anyone with an opinion, announcement, rant or rave, in Canada or not,
is invited to participate. The idea is to have some fun and to provide
a useful service as well.

I wish to thank AECNET for the link to Lighting in Canada and the
ambitious and well done project they are undertaking as well. This
type of service can only improve and with all of us working together
we can provide the type of information to professionals that is
needed.

Visit Lighting in Canada at:
http://www.mbnet.mb.ca/pmconsult/corner.html
or e-mail me at:
pmorrow@cyberspc.mb.ca
I am in the proccess of moving to Toronto so this site may be changing
in the next while but I assure you that the changes will be painless.

Thanks for your participation


Phil Morrow M.I.E.S.
Phil Morrow Consulting
http://www.mbnet.mb.ca/pmconsult
Lighting in Canada
http://www.mbnet.mb.ca/pmconsult/corner.html



From mpt@crest.org Wed Nov  8 10:47:48 EST 1995
Article: 3194 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!newsfeed.internetmci.com!in2.uu.net!dove.nist.gov!gateway
From: mpt@crest.org (Michael Totten)
Newsgroups: sci.engr.lighting
Subject: Re: International Lighting
Date: 7 Nov 1995 12:24:08 -0500
Organization: NIST
Lines: 75
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <Pine.SOL.3.91.951107121854.7552K-100000@solstice>
References: <Pine.OSF.3.91.951106085748.30876A-100000@falcon.cc.ukans.edu>
NNTP-Posting-Host: dove.nist.gov
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII

Contact E-Source, which has written extensively on lighting, and has
quite a bit about international comparisons.  Brad Davids is a
Vice-President who can steer you in the right directions:
Bradavids@aol.com


Michael Totten
Director, Center for Renewable Energy & Sustainable Technology (CREST)
777 N. Capitol Street N.E., Suite 805, Washington, DC 20002
Phone: (202) 289-5368  Fax: (202) 289-5354 EMAIL: mpt@crest.org
WEB: http://solstice.crest.org/
Gopher: gopher.crest.org    FTP: ftp.crest.org

On Mon, 6 Nov 1995, NGUYEN LE B wrote:

>
> Hello,
>
> Can anyone help me?  I'm doing a paper in my Advanced Lighting course
> with Dr. Belcher at the University of Kansas.  I'm  interested in the
> differences of lighting designs in three major regions of the world,
> Japan(Asia), France and Germany(Europe), and the U.S.  I assumed that
> there would be some obvious reasons for the different lighting designs
> such as cultural, economic, and standards, although it is difficult to
> support my assumptions.  I've asked different professionals in the
> lighting industry about their knowledge of this topic, but many have
> given me varying opinions such as...
>
> Professor Moeck, Illuminating Engineering professor here at KU, has told
> me that Europe tends to adopt new technological advances more easily
> although cost of living and energy costs are much higher.  He also said
> that European codes are much stricter; therefore, lightin design
> standards are higher.  Last he stated that most importantly,
> manufacturers produce a wider variety of lamps and luminaires to choose
> from in Europe; therefore, designers have more flexibility to design.  I
> also noticed when I was in France that in common places such as the
> residential dormitory that I stayed in and the local small restaurants,
> there was a much more common usage of contempory lighting products such
> as MR-16's and timers and dimmers.  This was not common only to the big
> cities such as Lyon or Paris, but also in small towns.  I was curious to
> why this might not be so common in America?
>
> On the other hand Jason Gill, a recent grad of KU who is currently
> working for Fisher Morantz Lighting Designers of New York, stated that
> European codes are not as strict as American codes.  For instance, their
> fire codes are not as strict, and don't require enclosed boxes for
> wiring, thus giving designers more flexibility.  He also added that most
> Asian countries, except for Japan, Korea and others, are not as
> developed and don't usually pay the extra price for quality lighting.
>
> Dr. Belcher, stated in an article on cultural influences in lighting,
> that France has lower illuminance requirements.  I also noticed that
> while I was in Europe.  Most French people preferred less light even for
> task lighting, and actually utilized more daylighting(a personal favorite
> of mine).
>
> In my opinion, I thought that the examples of Japanese lighting designs
> were very interesting for their usage of advanced control systems while
> maintaining a poetic theme.  Of course other Asian countries don't show
> high-tech standards because of economics, but I am interested in the
> cultural influences in lighting.  Being Asian,  this is of particular
> interest to me.
>
> If you have any comments, suggestions, or ideas that may guide me in my
> research, please send a reply.  Your time is greatly appreciated.
>
>
> Le Nguyen
> Illuminating Engineering student                        2112 W. 15th
> University of Kansas                             Lawrence, KS  66049
> bele@falcon.cc.ukans.edu                               (913)842-5662
>
>
>



From info@aecnet.com Wed Nov  8 10:47:49 EST 1995
Article: 3195 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!news-server.ncren.net!news.duke.edu!news.mathworks.com!newsfeed.internetmci.com!in2.uu.net!ns.aecnet.com!homer.aecnet.com!user
From: info@aecnet.com (AECNET Info Center)
Newsgroups: sci.engr.lighting
Subject: Lighting Indstry Resource is Free
Date: Tue, 07 Nov 1995 16:05:28 +0100
Organization: AECNET
Lines: 71
Message-ID: <info-0711951605280001@homer.aecnet.com>
NNTP-Posting-Host: homer.aecnet.com

PRESS INFORMATION


Contact: Gene Simon
(516)754-3020


FOR IMMEDIATE RELEASE

AECNET Announces Free Access to Internet Based Services for Design and
Construction Professionals

November 6, 1995 - Northport, NY - AECNET[tm] - The Electronic Resource
Network of Architecture, Engineering and Construction today announced that
it will now offer free access to the AECNET World Wide Web site and
Internet based Bulletin Board System.  Both services, available to design
and construction professionals with access to the Internet, will carry no
membership fees, no connect time charges and no software fees.  AECNET
uses both World Wide Web and electronic Bulletin Board System (BBS)
technology to provide design and construction professionals with
information, services, and an easy to use interactive gathering place on
the Information Superhighway.  

The AECNET World Wide Web site (http://www.aecnet.com), rapidly becoming
the most comprehensive industry resource on the Internet, is available on
the Internet to those with access to a World Wide Web browser. This
includes many users of the America Online, CompuServe and Prodigy
services.  The AECNET Internet Bulletin Board System is an on-line
service, similar in nature to these major commercial services, aimed
specifically at professionals in the commercial design and construction
industry.  The service is available with no long distance charges from the
Internet, and includes free point and click navigation software for both
PC and Macintosh users.  The Bulletin Board System is not available to
users of the major on-line services, however, since these services do not
connect users directly to the Internet.

The move was announced after a careful examination of the on-line market
as it pertains to the AEC industry in North America.  "Our strategy is
simple - if you are on the Internet, you can get to AECNET.  If not, we
can provide that connection at a very competitive rate.  For the past few
months we have been hearing requests for an open system, based on the
Internet, that carries little or no cost," noted AECNET president and
founder Drew Linsalata.  "We listened."

AECNET Vice President Gene Simon added, "Originally we envisioned AECNET
as a closed proprietary system supported by subscription dollars.  That
model has proven to be quite unsuccessful for other organizations so we
chose to make a change to reflect the current state of out market. The
dramatic increase in interest we have seen from industry vendors looking
at AECNET as an advertising vehicle prompted us to change direction more
quickly."  Simon added, "We are confident that we will be able to generate
the revenue required to provide this service at no charge."

The AECNET announcement marks the opening of the industry's first no cost
comprehensive on-line service.  AECNET will continue to offer fee based
Internet access and World Wide Web advertising packages to design and
construction firms around the US.

In conjunction with this announcement, the AECNET team unveiled a series
of promotional packages designed to allow building product manufacturers
and other industry vendors to take advantage of AECNET as a tool in
advertising products and services on the service.

Design and construction professionals interested in gaining free access to
the AECNET Web site or Internet BBS should contact AECNET via e-mail to
info@aecnet.com or by telephone at 1-800-9AECNET.

Industry vendors seeking information on advertising on AECNET should
contact AECNET at (516)754-3020 or via e-mail to sales@mail1.aecnet.com.

#         #         #


From littrox@richmond.infi.net Wed Nov  8 10:47:50 EST 1995
Article: 3196 of sci.engr.lighting
Path: bigblue.oit.unc.edu!concert!gatech2!pirates!cssun.mathcs.emory.edu!swrinde!sdd.hp.com!vixen.cso.uiuc.edu!uwm.edu!math.ohio-state.edu!magnus.acs.ohio-state.edu!lerc.nasa.gov!purdue!haven.umd.edu!news.umbc.edu!eff!news.duke.edu!news.mathworks.com!newsfeed.internetmci.com!in1.uu.net!dove.nist.gov!gateway
From: littrox@richmond.infi.net (Charles Troxell)
Newsgroups: sci.engr.lighting
Subject: Re: International Lighting
Date: 7 Nov 1995 18:12:54 -0500
Organization: NIST
Lines: 102
Sender: daemon@dove.nist.gov
Approved: news
Message-ID: <199511072312.SAA22437@moe.infi.net>
NNTP-Posting-Host: dove.nist.gov
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"

>
>Hello,
>
>Can anyone help me?  I'm doing a paper in my Advanced Lighting course
>with Dr. Belcher at the University of Kansas.  I'm  interested in the
>differences of lighting designs in three major regions of the world,
>Japan(Asia), France and Germany(Europe), and the U.S.  I assumed that
>there would be some obvious reasons for the different lighting designs
>such as cultural, economic, and standards, although it is difficult to
>support my assumptions.  I've asked different professionals in the
>lighting industry about their knowledge of this topic, but many have
>given me varying opinions such as...
>
>Professor Moeck, Illuminating Engineering professor here at KU, has told
>me that Europe tends to adopt new technological advances more easily
>although cost of living and energy costs are much higher.  He also said
>that European codes are much stricter; therefore, lightin design
>standards are higher.  Last he stated that most importantly,
>manufacturers produce a wider variety of lamps and luminaires to choose
>from in Europe; therefore, designers have more flexibility to design.  I
>also noticed when I was in France that in common places such as the
>residential dormitory that I stayed in and the local small restaurants,
>there was a much more common usage of contempory lighting products such
>as MR-16's and timers and dimmers.  This was not common only to the big
>cities such as Lyon or Paris, but also in small towns.  I was curious to
>why this might not be so common in America?
>
>On the other hand Jason Gill, a recent grad of KU who is currently
>working for Fisher Morantz Lighting Designers of New York, stated that
>European codes are not as strict as American codes.  For instance, their
>fire codes are not as strict, and don't require enclosed boxes for
>wiring, thus giving designers more flexibility.  He also added that most
>Asian countries, except for Japan, Korea and others, are not as
>developed and don't usually pay the extra price for quality lighting.
>
>Dr. Belcher, stated in an article on cultural influences in lighting,
>that France has lower illuminance requirements.  I also noticed that
>while I was in Europe.  Most French people preferred less light even for
>task lighting, and actually utilized more daylighting(a personal favorite
>of mine).
>
>In my opinion, I thought that the examples of Japanese lighting designs
>were very interesting for their usage of advanced control systems while
>maintaining a poetic theme.  Of course other Asian countries don't show
>high-tech standards because of economics, but I am interested in the
>cultural influences in lighting.  Being Asian,  this is of particular
>interest to me.
>
>If you have any comments, suggestions, or ideas that may guide me in my
>research, please send a reply.  Your time is greatly appreciated.
>
>
>Le Nguyen
>Illuminating Engineering student                        2112 W. 15th
>University of Kansas                             Lawrence, KS  66049
>bele@falcon.cc.ukans.edu                               (913)842-5662
>
>
>
>
>

Le Nguyen
UK Lighting Student.

Hi Le Nguyen,
My thoughts are that first, the insurance companies in the US through
Underwriters Labs dictate much as to how we wire and light a space.  UL
support by the insurance companies of course is a measure of profit ability
for the sponsor.

It makes sense that in as much as the US codes are dictated by UL that they
be safe to the extreme.  (ie) Thermal Sensors in recessed housings, IC
housings for insulated ceilings and the like.  Much of this has cost the end
user an escalated cost for his system or really? Has it been a saving in the
form of a reduced insurance premium.

Also, in the US, every electrician fancies himself a "lighting designer."  I
have in excess of 30 years with the likes of electricans and I know what
horrors they can invoke.

I noted while in Australia last year the use of many MR 16 sources, I liked
it. Additionally the use of CFL's was heavy.  Again my reaction was
favorable.  This likens to a very uniform lighting job.  Lots of small
sources each doing it's job.  While at the IES ANZ convention, many
manyfacturers, both European and Asian were showing their wares as far as
ballast and transformers were concerned.  The options as far as transformers
(mostly solid state) were far better than we have in the US.

Hope my comments might help,
Sincerely,
Charles Troxell

Charles Troxell, MIES
Lighting Images Technology
11301 Perdido Court
Midlothian, VA. 23112

"The Meek Shall Inherit The Earth, While The Rest Of Us Journey To The
Stars"
LIT International Design Consortium, Australia/USA/ Worldwide Lighting Services



