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An electronvolt (eV) is a unit of energy that measures the kinetic energy gained by a single electron when it accelerates through an electric potential difference of one volt. Physicists use electronvolts as a standard way to describe energy in atomic and subatomic processes, where the more familiar joule would result in impractically small numbers.
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Key facts
- Unit.name
- electronvolt
- Unit.standard
- Non-SI accepted unit
- Unit.quantity
- energy
- Unit.symbol
- eV
- Unit.units1
- SI units
- Unit.units2
- CGS units
- Unit.units4
- kilowatt-hours
- Unit.units5
- kilocalories (thermochemical)
- Unit.units6
- BTUs
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Wikidata facts
- Named after
- electron
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- conversion to SI unit
- 0.0000000000000000001602176634
- measured physical quantity
- energy
- unit symbol
- eV
- Wikidata SPARQL query equivalent
- wd:Q83327 p:P2370/psn:P2370 [wikibase:quantityAmount ?source; wikibase:quantityUnit ?base]. ?item p:P2370/psn:P2370 [wikibase:quantityAmount ?target; wikibase:quantityUnit ?base]. BIND(?source / ?target as ?value)
- numeric value
- 0.0000000000000000001602176634
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- Wikipedia:Vital articles/Level/4
- maintained by WikiProject
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Sources (3)
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Article · Deutsch
Das Elektronenvolt, amtlich Elektronvolt, ist eine Einheit der Energie, die in der Atom-, Kern- und Teilchenphysik häufig benutzt wird. Es entspricht dem Produkt aus der Elementarladung e und der Maßeinheit Volt (V). Sein Einheitenzeichen ist eV. Das Elektronvolt gehört zwar nicht wie das Joule zum Internationalen Einheitensystem, ist aber zum Gebrauch mit ihm zugelassen und eine gesetzliche Maßeinheit in der EU und der Schweiz.
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