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Greetings,
We're working on a floor demo about photochromic compounds, and we're
looking for ways of using UV light around visitors that are both safe
and effective.  Some of the smaller light sources don't seem to give us
a solid WOW-factor, but the larger sources seem worrisome.  Any
experiences, thoughts or comments would be greatly appreciated. Thanks!

David McCullough
IPSE Intern
The Franklin Institute Science Museum
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