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electric constant

   Also found in: Encyclopedia, Wikipedia 0.03 sec.
electric constant
n
(Physics / General Physics) the permittivity of free space, which has the value 8.854 187 ✕ 10-12 farad per metre. Symbol εo Also called absolute permittivity


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In Japan and Russia, scientists are levitating masses with superconductors; in Germany, experimenters are debugging a vacuum Faraday system, whereby gold atoms beamed onto a collector yield an electric constant, from which an Avogadro number can be derived.
Bearing down on the kilogram standard by Cowen, Ron / Science News
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