| electron volt | has symbol eV |  |
| has symbol eV | |
| is equivalent to 1.6 × 10-12erg | |
| is equivalent to 1.6 × 10-19 joules | |
| has equivalent 160.219 × 10-21 joule | |
| has definition Unit employed to indicate the energy of a charged particle in terms of the energy received by the charge on an electron due to a potential difference of one volt. An approximate value (1 in 104) for the energy of electromagnetic radiation expressed in electron volts is given by 1234 / λ, where λ is the wavelength in nanometres. In recent years it has become customary to write MeV and GeV for mega (106) and giga (109) electron volts. In the USA 109 electron volts are often written as BeV, the letter B being used in this case as an abbreviation for the American billion (109), but in 1948 the International Union of Pure and Applied Physics disapproved of the use of BeV and expressed a preference for GeV or 109 eV. The electron volt was called the equivalent volt when it was originally introduced in 1912. | |
| has definition Unit of energy used in atomic and nuclear physics; the kinetic energy acquired by one electron in passing through a potential difference of 1 volt in vacuum. Sometimes used as a unit of mass (see rest-mass energy) | |
| is an instance of energy unit | |
| is an instance of energy unit | |
| is an instance of non SI unit | |
| energy unit | is a unit of energy | |
| non SI unit | has value in SI unit | |
| unit | has historical origin | |
| represents | |
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