Definition of electronvolt in English:
electronvolt
(also eV)
noun ɪˈlɛktrɒnvəʊltɪˈlɛktrɒnvɒlt
Physics A unit of energy equal to the work done on an electron in accelerating it through a potential difference of one volt.
Example sentencesExamples
- It means that the energy of the source is of the order of a teraelectronvolt, that is, a trillion electronvolts.
- Its decay produces gamma rays with energies of a trillion electronvolts.
- At today's accelerators, for example the CERN LEP accelerator, the value has been measured as 1/128 rather than 1/137 at energies corresponding to approximately 100 billion electronvolts.
- Then if these electrons are attracted to a second plate B with a voltage (relative to A) of +1 volt, each electron gains one electron volt.
- One electron volt is roughly half the energy carried by a single photon of red light.