MEHAU KULYK / SCIENCE PHOTO LIBRARY MEHAU KULYK / SCIENCE PHOTO LIBRARY
Superconductive levitation. Computer graphic illustration depicting a sample of a superconducting material levitated above a magnet. Below a certain critical field intensity, a superconductor will repel a magnetic field. Thus the superconductor sample, placed over a magnet, will 'levitate'. The height of levitation is governed by the mass of the sample and the strength of the magnetic field. The tendency for superconductors to repel a magnetic field is called the Meissner Effect.
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