Question

photoelectric They wanted to avoid the kind of smoke detector that uses radioactive materials, so they've installed the photoelectric kind instead. ˌfoʊtoʊɪˈlɛktrɪk

Accepted Answer

Involving an electrical effect produced by the action of light or other radiation. 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).

word	photoelectric
definition	Involving an electrical effect produced by the action of light or other radiation.
eg_sentence	They wanted to avoid the kind of smoke detector that uses radioactive materials, so they've installed the photoelectric kind instead.
explanation	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).
IPA	ˌfoʊtoʊɪˈlɛktrɪk

Photoelectric Light Effect Kind Beam Film Involving Electrical