Shrinking Quarter Machine

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A MagLab physicist and engineer pair up to demonstrate the lab's famous Quarter Shrinking Machine, a loud, stinky illustration of electrodynamics, circuits, Lenz’s Law and Lorenz forces. (Length: 7 minutes, 50 seconds)

Last modified on 22 April 2016

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Magnet Academy is brought to you by the National High Magnetic Field Laboratory — the largest, most high-powered magnet lab in the world.

Shrinking Quarter Machine

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