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photoelectric effect

noun, Physics.
1.
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.
Also called photoemission.
Origin
1890-1895
1890-95
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for photoelectric effect
  • In the photoelectric effect, electrons in the metal absorb light quanta.
  • The primary layer is a semiconductor material where the photoelectric effect takes place.
British Dictionary definitions for photoelectric effect

photoelectric effect

noun
1.
the ejection of electrons from a solid by an incident beam of sufficiently energetic electromagnetic radiation
2.
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
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photoelectric effect in Science
photoelectric effect  
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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photoelectric effect in Culture

photoelectric effect definition


The emission of electrons from a metal when light shines on it. The effect is widely used to convert a light signal into an electric current.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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