josephson effect

Josephson junction

[joh-zuhf-suhn, -suhf-]
noun Electronics.
a high-speed switch, used in experimental computers, that operates on the basis of a radiative phenomenon (Jo·sephson effect) exhibited by a pair of superconductors separated by a thin insulator.

Origin:
1965–70; after B. D. Josephson, who predicted the existence of the effect

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World English Dictionary
Josephson effect (ˈdʒəʊzɪfsən)
 
n
physics any one of the phenomena which occur when an electric current passes through a very thin insulating layer between two superconducting substances. The applications include the very precise standardization of the volt
 
[C20: named after Brian David Josephson (born 1940), English physicist; shared the Nobel prize for physics in 1973]

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Science Dictionary
Josephson effect   (jō'zəf-sən)  Pronunciation Key 
An effect in which electron pairs undergo quantum tunneling with zero resistance across a barrier separating two superconductors. The effect can be manipulated by varying a magnetic field at the junction where the tunneling occurs and is being investigated as a possible part of the design of high-speed switches for computer microprocessors. The Josephson effect is named after its discoverer, Welsh physicist Brian David Josephson (b. 1940).
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