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Efectul Meissner-Oschenfeld

Superconductor levitation of a rare earth magnet as illustration of the Meissner effect. Made at Sydney Boys High School.

How can a super-thin, three-inch disk levitate something 70,000 times its own weight? In a riveting, futuristic demonstration, Boaz Almog shows how a phenomenon known as quantum locking allows a superconductor disk to float over a magnetic rail — completely frictionlessly and with zero energy loss.

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