|Josephson effect (ˈdʒəʊzɪfsən)|
|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]|
|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).