John,

        If relatively small size isn't a problem, Carolina sells UV Enclosures
(black plastic molded boxes about 12"x24" complete with "hand holes" and a
tilted viewing hole) that coordinate with their short/long wave UV lamps.
Check their website (http://www.carolina.com) for more detail; the product
numbers are WW-GEO9609 and WW-GEO9607.  They run about $170.  I let children
view UV-reactive rocks in the boxes, and they love being able to reach in.
I love that their eyes are sheilded by the shape of the view box.  If
touching is a no-no, the "hand holes" can be covered.
        Also, you might consider building one as large as you like -- as long as
the viewing hole is angled down and away from the lamp.

UV is groovy,
Summer
_______________________________
Summer N. Smith
School/Public Programs
The Science Place, Dallas, TX
214-428-5555 ext. 341
[log in to unmask]


-----Original Message-----
From: Museum discussion list [mailto:[log in to unmask]]On
Behalf Of [log in to unmask]
Sent: Monday, March 04, 2002 11:48 AM
To: [log in to unmask]
Subject: UV light


I am posting this for John Timmerman, Cape Fear Museum's exhibits designer.

Can anyone provide me with an answer to the following concern?

I am planning an interactive exhibit to demonstrate a tool of fabric
conservators.  It is to look at fabric samples under ultra violet (long
wave, 365 nm wave length) light to determine the composition of dyes or
stains on flags.

One is not suppose to view the light source (lamp) directly. I am proposing
to contain the exhibit within an enclosure.  The visitor will look into it
through an ultra violet screened glazing of either acrylic or glass, which
ever is less expensive.

My question:  Does ultra violet screened glazing block all the harmful
radiation effectively?  If someone stares directly at the light lamp
through the glazing, will the screening prevent harm to their eyes?  The
case will be built in such a way that casual viewing of the lamp (light
source) will not be possible.  If one were to get down low to the floor it
may be possible to see it. I want to cover all bases.

John Timmerman
Exhibits Designer
Cape Fear Museum
814 Market Street
Wilmington, North Carolina  28401-4731
910.341.4350 x 3021
910.341.4037 (fax)

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