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What material would be best suited to create a shield to protect from the new heat ray gun?

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See http://en.wikipedia.org/wiki/Active_Denial_System for a description of the weapon.

It's just EM radiation so kitchen foil would probably shield you just fine. Or soak your clothes in salt water. Anything conductive would do.

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I'd be afraid that aluminum foil would get extremely hot and give you actual burns. Saltwater soaking your clothing sounds better, but you'd also need rags to cover your face and eyes, which are extremely sensitive. Your best bet is probably running away. –  BebopButUnsteady Apr 12 '12 at 20:04

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