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. 2019
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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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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