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Specular reflection off of a dull-looking piece of steel was my 
favorite trick when we had an IR camera here with a traveling 
exhibit.  (The surface roughness was enough to scatter (shorter) 
visible wavelengths but not (longer) IR wavelengths, apparently.) 
Check it out, all you lucky people with IR cameras!

I wanted to take a hand mirror from Walgreen's and replace the glass 
with a piece of galvanized steel, but I never got around to it.



-- 
~~

Allan Ayres
Exhibit Developer
Lawrence Hall of Science
University of California, Berkeley
Berkeley, CA 94720-5200
[log in to unmask]
510-642-1254

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