electron volt

See also: electronvolt, électronvolt, and électron-volt

English

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Pronunciation

  • (General American) IPA(key): /ɪˈlek.trɑːn ˌvoʊlt/
    • Audio (General American):(file)

Noun

electron volt (plural electron volts, abbreviation eV)

  1. (physics) A unit for measuring the energy of subatomic particles; the energy equal to that attained by an electron moving through a potential difference of one volt. Equivalent to 1.6022 × 10−19 joules.
    • 2011, Brian Cox, Jeff Forshaw, The Quantum Universe, Allen Lane, page 158n:
      To get a feel for the size, the energy required to completely liberate an electron from the ground state of a hydrogen atom is 13.6 electron volts.

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