17 Dec
2003
17 Dec
'03
11:17 p.m.
TIm, a layer of tin foil is not the same as a professionally installed and maintained Faraday cage. I can envision circulating currents on the tinfoil. Ie, ground loop type of situation. All imaging is depenmdant upon the target having some radiating characteristic. If the gun shields a gun-shaped peice of the body from radiating in millimeter waves, you can build a gun detector. If you're sure that a firearm always looks like a gun, that is....