photoelectric effect


Definition of photoelectric effect 

: the emission of free electrons from a metal surface when light strikes it

Examples of photoelectric effect in a Sentence

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Genius is an in-depth dramatic look at the life and career of the theoretical physicist who, among other things, explained the photoelectric effect that made the invention of television possible. Darryn King, HWD, "What Is Emoji Einstein, and Why Doesn’t Geoffrey Rush Want to Play Him?," 24 Apr. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'photoelectric effect.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of photoelectric effect

1892, in the meaning defined above

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The first known use of photoelectric effect was in 1892

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the figure or shape of a crescent moon

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