[foh-toh-i-lek-tris-i-tee, -ee-lek-] /ˌfoʊ toʊ ɪ lɛkˈtrɪs ɪ ti, -ˌi lɛk-/
induced by electromagnetic radiation, as in certain processes, as the photoelectric and photovoltaic effects, photoconductivity, and photoionization.
the branch of physics that deals with these phenomena.
- Photoelectric magnitude
noun 1. (astronomy) the magnitude of a star determined using a photometer plus a filter to select light or other radiation of the desired wavelength
noun, Physics. 1. the minimum frequency or maximum wavelength of incident radiation necessary to release photons from a given surface.
noun, Photography. 1. an exposure meter using a photocell for the measurement of light intensity.
noun, Electronics. 1. . [foh-tuh-toob, -tyoob] /ˈfoʊ təˌtub, -ˌtyub/ noun, Electronics. 1. an with a photosensitive cathode, used like a photocell. /ˈfəʊtəʊˌtjuːb/ noun 1. a type of photocell in which radiation falling on a photocathode causes electrons to flow to an anode and thus produce an electric current