Electron Volt (eV)

Definition - What does Electron Volt (eV) mean?

Electron volt (eV) refers to the energy unit that is approximately equal to 1.602 × 10-19 joule. This is equivalent to the kinetic energy that is gained by one unbound electron as it goes through acceleration through a difference of electric potential of a single volt.

Corrosionpedia explains Electron Volt (eV)

Traditionally, the electron volt was regarded as a standard unit of measurement. It has been widely used in the field of science, especially in terms of electrostatic particle accelerators. This is because "q" charge particles have energy defined as:

    *Energy = qV (or q volt)

Once the particle passes through the "V" potential, the other one gains energy in its "eV" form.

Accurate measurement of eV should be performed to prevent the occurrence of corrosion. This is because corrosion typically occurs at a certain rate dictated by a balance between contradicting electrochemical reactions. This can be possible through scattering experiments that utilize low nuclear energy. The relationship between eV and other forms of energy recoil depends on what is used as a medium for scattering. It must be noted that the results should be empirically established for every material.

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