Energies in Electron Volts

电子伏特中的能量

Room temperature thermal energy of a molecule..................................0.04 eV

分子的室温热能..................................0.04 eV

Visible light photons...........................................................................1.5-3.5 eV

可见光光子...........................................................................1.5-3.5 eV

Energy for the dissociation of an NaCl molecule into Na⁺ and Cl^- ions:.............................................................................................4.2 eV

NaCl分子 dissociation 的能量：4.2 eV

Ionization energy of atomic hydrogen ...................................................13.6 eV

氢原子的电离能...................................................13.6 eV

Approximate energy of an electron striking a color television screen (CRT display) ...............................................................................20,000 eV

击中彩色电视机屏幕的电子的近似能量 ...............................................................................20,000 eV

High energy diagnostic medical x-ray photons..................200,000 eV (=0.2 MeV)

高能诊断X射线光子..................200,000 eV (=0.2 MeV)

Typical energies from nuclear decay:
(1) gamma..................................................................................0-3 MeV
(2) beta.......................................................................................0-3 MeV
(3) alpha......................................................................................2-10 MeV

核衰变的典型能量：(1) 伽马射线...................................................0-3 MeV (2) 电子.......................................................0-3 MeV (3) alpha粒子..............................................2-10 MeV

Cosmic ray energies ...........................................................1 MeV - 1000 TeV

宇宙射线能量 ...........................................................1 MeV - 1000 TeV

1 MeV = 10⁶ eV, 1 GeV = 10⁹ eV, 1 TeV = 10¹² eV

Definition of electron volt

电子伏特的定义

1 MeV = 10⁶ eV，1 GeV = 10⁹ eV，1 TeV = 10¹² eV

Index

索引

HyperPhysics***** Electricity and Magnetism ***** Quantum Physics

HyperPhysics ***** 电磁学 ***** 量子物理

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Electron Volts

电子伏

A convenient energy unit, particularly for atomic and nuclear processes, is the energy given to an electron by accelerating it through 1 volt of electric potential difference. If an electron starts from rest at the negative plate, then the electric field will do work eV on it, giving it that amount of kinetic energy when it strikes the positive plate. The work done on the charge is given by the charge times the voltage difference, which in this case is:

The abbreviation for electron volt is eV.