photoelectric

play
adjective pho·to·elec·tric \ˌfō-tō-i-ˈlek-trik\

Definition of photoelectric

  1. :  involving, relating to, or utilizing any of various electrical effects due to the interaction of radiation (as light) with matter

photoelectrically

play \-tri-k(ə-)lē\ adverb

Did You Know?

The photoelectric effect *occurs when light (or similar radiation such as X-rays) falls on a material such as a metal plate and causes it to emit electrons. The discovery of the photoelectric effect led to important new theories about matter (and to a Nobel Prize for Albert Einstein). *Photoelectric cells, *or *photocells, are used in burglar-alarm light detectors and garage-door openers (both employ a beam of light that is broken when something moves across it), and also to play soundtracks on movie film (where a light beam shines through the soundtrack encoded on the film and is "read" by the photocells).

Origin and Etymology of photoelectric

International Scientific Vocabulary


First Known Use: circa 1879


PHOTOELECTRIC Defined for English Language Learners

photoelectric

play
adjective pho·to·elec·tric \ˌfō-tō-i-ˈlek-trik\

Definition of photoelectric for English Language Learners

  • : involving, relating to, or using an electric current that is controlled by light


Medical Dictionary

photoelectric

play
adjective pho·to·elec·tric \ˌfōt-ō-i-ˈlek-trik\

Medical Definition of photoelectric

  1. :  involving, relating to, or utilizing any of various electrical effects due to the interaction of radiation (as light) with matter

photoelectrically

\-tri-k(ə-)lē\play adverb

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