Small Change
2001-05-14 18:45:24+02 by Dan Lyke 0 comments
Topspin passed along Bert Hickman's Quarter Shrinker:
The large current that's induced into the outer rim of the coin may reach a million amperes or more. Since the initial energy is in the range of 3,500 - 8,500 Joules, the instantaneous power is awesome, and for a brief instant is roughly equal to the electrical power used by the entire city of Chicago. The repulsion forces between the work coil and the coin create a huge radial inward compressive force on the coin that easily overcomes the yield strength of all the metal(s) in the coin, causing it to plastically deform the coin into a much smaller diameter.