====== Meissner Effect Levitation ======

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Owing to the Meissner effect, a small permanent magnet is seen to levitate above a high-temperature superconductor that has been cooled with liquid nitrogen. A video camera is used to project a close-up view on the wall or screen for the class to see. Apparatus is available for measuring the resistance and temperature of the superconductor.

====Setup====

Immerse the superconductor in nitrogen until the nitrogen stops bubbling, at which point it'll be at temperature. Place the superconductor on a foam surface to minimize thermalization rate. Carefully place a neodymium magnet on top of the superconductor. You'll feel a magnetic force as you push it close. With patience, you should get the permanent magnet to levitate.


B3, I2

PIRA DCS 5G50.50