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Josephson constant

   Also found in: Wikipedia 0.02 sec.
Josephson constant [′jō·sef·sən ‚kän·stənt]
(physics)
The quantityKJ= 2e/h, which appears in the equations for the alternating-current Josephson effect, whereeis the magnitude of the charge of the electron andhis Planck's constant.
The conventional value of this quantity adopted by international agreement on January 1, 1990, to establish a standard for the volt,KJ-90= 493,597.9 gigahertz per volt.


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The last three constants are determined by other means, but are included since they are used in some of the other determinations Constant Symbol Planck constant h Josephson constant (SI) [K.
Details of the 1998 watt balance experiment determining the Planck ... by Williams, Edwin / Journal of Research of the National Institute of Standards and Technology
These include the Josephson constant, the charge and mass of the electron, and the Avogadro constant [2].
Hysteresis and Related Error Mechanisms in the NIST Watt Balance ... by Woodford, John / Journal of Research of the National Institute of Standards and Technology
J] = 2e/h is the Josephson constant determined by the Plank constant h and the elementary charge e.
The ampere and electrical standards by Williams, Edwin R. / Journal of Research of the National Institute of Standards and Technology
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