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Philip Wood
Philip Wood is offline
Nov7-12, 09:32 AM
P: 863
The textbook answer is to use a dull, dark, matte surface. This, though, is a bit superficial (no pun intended) because surfaces which are good absorbers of visible light may not be good absorbers of far infrared (as emitted by skin). I'd guess, though, that you wouldn't go too far wrong with a soot-blackened surface.