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K2-46: MAGNET LEVITATION ABOVE SPINNING DISC 10 years 4 months ago #488

zzfixk21
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ID Code: K2-46
Purpose: Demonstrate Lenz's law in a dramatic way.
Description: A small rare-earth magnet is glued onto a short plastic strip, and held above a rapidly spinning aluminum disc. Eddy currents in the disc create a magnetic field which levitates the magnet. Let the magnet hang on the disc at rest, then start the rotator.
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