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Old 02-09-2006, 02:30 PM
Q.E.D. Q.E.D. is offline
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Join Date: Jan 2003
Location: Richmond, VA
Posts: 22,536
Originally Posted by Hooleehootoo
How do people that buy bullion avoid getting taken like this?
It might have the same density, but the electromagnetic signature would be very different. This property is used to detect counterfeit gold bullion and coins, by using a purpose-designed metal detector. It works the same way as discriminating hobbyist metal detectors do to differentiate between valuable items, such as gold jewelry and coins, and buried junk, like tin cans and nails.