Re: update: screw-in BLB light-box

From: jude.taylor@comcast.net
Date: 08/01/05-10:17:58 PM Z
Message-id: <080220050417.4983.42EEF3F60001E2970000137722073000339D0104970E9BD20A0B9A06@comcast.net>

Al foil sounds good to me. I will give it a try. Thanks for the feedback! JT

--
Judy Rowe Taylor
Mukilteo, WA
Art is a voice of the heart, a song of the soul.
www.enduringibis.com
jude.taylor@comcast.net or judyrowetaylor@enduringibis.com
> 
> ----- Original Message ----- 
> From: <jude.taylor@comcast.net>
> To: "Richard Knoppow" <dickburk@ix.netcom.com>; 
> <alt-photo-process-l@sask.usask.ca>
> Sent: Monday, August 01, 2005 2:48 PM
> Subject: Re: update: screw-in BLB light-box
> 
> 
> > Richard,
> >
> > I did not use any reflectors, but that is a possibility 
> > that might help.  The top of the box INSIDE above the 
> > bulbs is all white and should, as far as I can figure, 
> > reflect rather than absorb the UV.  There are, however, 
> > several inches of space from the tip of the coil to the 
> > base  of the ceramic sockets (top of box), and the sides 
> > of the box were not painted white or lined with reflective 
> > material.
> >
> > Hummmh!  I wonder if silver / white "tea chest" paper 
> > lining would work?
> >
> > --
> > Judy Rowe Taylor
> > Mukilteo, WA
> > Art is a voice of the heart, a song of the soul.
> > www.enduringibis.com
> > jude.taylor@comcast.net or judyrowetaylor@enduringibis.com
> >
>    Other than aluminum I don't know what materials are good 
> UV reflectors. Silver is not. One way to test is to see how 
> much florescence on gets from the reflected light. Near UV 
> will fluoresce the brighteners in ordinary writing paper. A 
> lot of materials that are good visible light reflectors 
> don't do will with UV. Aluminum foil from the grocery is a 
> good UV reflector, I suppose you could cement it to 
> something else which was the right shape.
>    It just seems to me that compact florescent lamps are 
> intended to radiate most of their light in a horizontal 
> circle so using one side or the top as a source is probably 
> wasting most of the light output.
> 
> ---
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk@ix.netcom.com
> 
> 
Received on Fri Aug 5 12:17:10 2005

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