eV
The electronvolt (symbol eV, or, rarely and incorrectly, ev) is a unit of energy. It is the amount of kinetic energy gained by a single unbound electron when it passes through an electrostatic potential difference of one volt, in vacuum. In other words, it is equal to one volt (1 volt = 1 joule per coulomb) times the charge of a single electron (in coulombs). The one-word spelling is the modern recommendation although the use of the earlier electron volt still exists.
British/American
- Quad1.52×10⁻³⁷
- Therm1.52×10⁻²⁷
- British thermal unit (BTU)1.52×10⁻²²
- Foot-pound1.18×10⁻¹⁹
Other
- kcal3.83×10⁻²³
- cal3.83×10⁻²⁰
- Thermie (th)3.83×10⁻²⁶