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单词 electron volt
释义

electron volt


electron volt

n. Abbr. eV A unit of energy equal to the energy acquired by an electron falling through a potential difference of one volt, approximately 1.602 × 10-19 joules.

electron volt

A unit used to measure the energy of subatomic particles. It is equal to the energy gained by an electron that is accelerated until its electric potential is one volt greater than it was before being accelerated.
Thesaurus
Noun1.electron volt - a unit of energy equal to the work done by an electron accelerated through a potential difference of 1 volteVenergy unit, heat unit, work unit - a unit of measurement for work
Translations
electronvoltioélectronvoltélectron-volt

Electron Volt


Electron Volt

 

a subsidiary unit of energy, equal to the energy acquired by a particle having an elementary charge, oi the charge of an electron, when the particle is moved in an accelerating electric field between two points with a potential difference of 1 volt. The international symbol is eV.

One electron volt equals 1.60219 x 10–19 joule. Multiple units are also used. For example, the kiloelectron volt (keV) equals 103 eV; the megaelectron volt (MeV) equals 106 eV.

The masses of elementary particles are often expressed in electron volts. Such usage is based on the Einstein mass-energy relation E = mc2. The equation relates the mass m of a particle and the particle’s total energy E; c is the speed of light. The energy corresponding to an atomic mass unit is (931.5016 ± 0.0026) MeV.

electron volt


volt

 (V) [vōlt] the SI unit of electric potential or electromotive force, equal to 1 watt per ampere, or 1 joule per coulomb.electron volt (eV) a unit of energy equal to the energy acquired by an electron in being accelerated through a potential difference of 1 volt; equal to 1.602 × 10−19 joule.gigaelectron volt (GeV) one billion electron volts (109 eV).kiloelectron volt (keV) one thousand electron volts (103 eV).megaelectron volt (MeV) one million electron volts (106 eV).

electron volt

eV The energy acquired by an electron as it passes through a potential of 1 V.
See EV
See EV

electron volt


Related to electron volt: Planck's constant
  • noun

Synonyms for electron volt

noun a unit of energy equal to the work done by an electron accelerated through a potential difference of 1 volt

Synonyms

  • eV

Related Words

  • energy unit
  • heat unit
  • work unit
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更新时间:2024/11/11 18:53:47