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The effect whereby magnetic fields are excluded from a superconductor's interior if the superconductor is below a critical temperature, since introducing a magnetic field immediately creates electric currents in the superconductor that cancel the magnetic field. The Meissner effect is responsible for the diamagnetic properties of superconductors.
[After Fritz Walther Meissner (1882-1974), German physicist who discovered it in collaboration with Robert Ochsenfeld (1901-1993), German physicist.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(General Physics) physics the phenomenon in which magnetic flux is excluded from a substance when it is in a superconducting state, except for a thin layer at the surface
[C20: named after Fritz Walther Meissner (1882–1974), German physicist]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014