ELECTRICITY AND MAGNETISM - ELECTROMAGNETIC INDUCTION - EDDY CURRENTS	Order
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Description: A bar magnet is suspended above an aluminum disk. When the disk starts spinning, it will 'drag' the magnet and cause it to start spinning in the same direction. Purchased/Built: built Setup Time: 1 hour Quant. in Demo Room: 1 Demo References Hilton E-8d.1 A magnet needle over a rotating copper disk. The Video Encyclopedia of Physics Demonstrations Disc 20-25 A bar magnet suspended above a spinning aluminum disc will start to rotate. Sutton E-226 A magnet suspended above a rotating horizontal copper disk will rotate. The American Journal of Physics AJP 28(8),748 Support the horseshoe magnet by a bight with stranded string and "wind up" the string to get a high spin rate.
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