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Boaz Almog: Superconductor levitatation

Meissner effect: levitation of a magnet above a superconductor. Image credit: Mai-Linh Doan

Meissner effect: levitation of a magnet above a superconductor. Image credit: Mai-Linh Doan

TED presents Boaz Almog who makes a super-thin 3-inch disk levitate object 70,000 times its own weight. In a riveting demonstration, 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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