Hey, you! Psst...want to shrink some coins?

[BlueJazz]

That's right....I said shrink some coins...This is Weird!

"Pressing a switch triggers the spark gap, which releases the entire charge through the coil in 25 millionths of a second. This creates a huge magnetic field, which induces a current and then a magnetic field inside the coin, which in turn pushes back against the field outside. The repulsion force between these two fields crushes the metal, instantly taking a quarter down to the size of a dime".

http://www.popsci.com/popsci/science/article/0,12543,490445,00.html