external photoelectric effect

external photoelectric effect

[ek¦stərn·əl ‚fō·dō·i′lek·trik i‚fekt]
(electronics)
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In physics today known [4, 7]: the external photoelectric effect (the emission of the substance outside the electrons when exposed to light); internal photoelectric effect (change in electrical resistance of matter under the influence of the quanta of the electromagnetic field); photovoltaic effect (the appearance of the electromotive force in the matter under the influence of solar radiation); nuclear photoelectric effect (the emergence of a nuclear reaction in the material under the action of gamma rays).