SUPERCONDUCTIVITY

Superconductivity

Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature. It was discovered by Dutch physicist Heike Kamerlingh Onnes on April 8, 1911 in Leiden. Like ferromagnetism and atomic spectral lines, superconductivity is a quantum mechanical phenomenon. It is characterized by the Meissner effect, the complete ejection of magnetic field lines from the interior of the superconductor as it transitions into the superconducting state. The occurrence of the Meissner effect indicates that superconductivity cannot be understood simply as the ...

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superconductivity

Noun

  1. The property of a material whereby it has no resistance to the flow of an electric current.
    Currently, superconductivity can only be achieved at extremely low temperatures.


The above text is a snippet from Wiktionary: superconductivity
and as such is available under the Creative Commons Attribution/Share-Alike License.

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