Electrically conductive metals , such as copper and Al , can be altered in kind without bringing so much as a chisel to their surface . The secret : electromagnetic fields .
By stimulate a high-pitched - intensity pulsed magnetic field into — in this shell — a quarter , a corresponding repugnant magnetic field is created , rapidly — we’re talking 1/100th of a second , here — repelling portions of the quarter into itself . What results is a productive , dime - size 25 - cent patch .
• A coin
• An electromagnetic music director
• A heavily constructed coil of telegram
• Place coin in close proximity to wire coil .
• Discharge electromagnetic stream through director , by closing its circuit .
• The current make a ultrastrong , rapidly oscillating electromagnetic field of honor around the conducting wire coil .
• In turn , the ringlet creates an ultrastrong magnetic flow ( tens or 100 of thousands of amperes ) , which overcome the coin , causing it to alter in shape and size .
• conceive of the coin is cower in care of the current , compact into itself like a scared baby animal .
[ ThinkGeek , Engineers Handbook , The Geek Group ]
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