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electron volt
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electron volt

unit of measurement
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Also known as: eV, electronvolt
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Category: Science & Tech
Related Topics:
energy
teraelectron volt
kiloelectron volt
gigaelectron volt
megaelectron volt
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electron volt, unit of energy commonly used in atomic and nuclear physics, equal to the energy gained by an electron (a charged particle carrying unit electronic charge) when the electrical potential at the electron increases by one volt. The electron volt equals 1.602 × 10−12 erg, or 1.602 × 10−19 joule. The abbreviation MeV indicates 106 (1,000,000) electron volts; GeV, 109 (1,000,000,000); and TeV, 1012 (1,000,000,000,000).

This article was most recently revised and updated by Erik Gregersen.