The can that gets crushed is aluminum. The AC coil repelling the aluminum generates enough force to crush the can. Likewise with the copper penny.
If that coil is flat, and if you put a piece of conductive metal on top of it (say, an old aluminum hard drive platter), it will be repelled with tremendous force. In my case, it was repelled with enough force to put a rather large hole in the shop ceiling (1/4" chipboard)...
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The can that gets crushed is aluminum. The AC coil repelling the aluminum generates enough force to crush the can. Likewise with the copper penny.
If that coil is flat, and if you put a piece of conductive metal on top of it (say, an old aluminum hard drive platter), it will be repelled with tremendous force. In my case, it was repelled with enough force to put a rather large hole in the shop ceiling (1/4" chipboard)...