- the phenomenon in which the absorption of electromagnetic radiation, as light, of sufficiently high frequency by a surface, usually metallic, induces the emission of electrons from the surface.
Origin of photoelectric effect
First recorded in 1890–95
Also called photoemission.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- the ejection of electrons from a solid by an incident beam of sufficiently energetic electromagnetic radiation
- any phenomenon involving electricity and electromagnetic radiation, such as photoemission
- The emission of electrons from a material, such as a metal, as a result of being struck by photons. Some substances, such as selenium, are particularly susceptible to this effect. The photoelectric effect is used in photoelectric and solar cells to create an electric potential. Also called photoemission
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