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Levitating Magnet over Superconductor

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Published on Feb 19, 2008

A small strong magnet is sitting on a sample of YBa2Cu3O7-x. Liquid nitrogen is added and the YBa2Cu3O7-x cools and changes into its superconducting state, resulting in levitation of the magnet. The exclusion of magnetic field lines from a superconductor is called the Meissner effect and it causes a strong magnet to levitate above materials in their superconducting state.

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