photoelectric
1photoelectric — ► ADJECTIVE ▪ characterized by or involving the emission of electrons from a surface by the action of light …
2photoelectric — [fōt΄ō ē lek′trik] adj. [ PHOTO + ELECTRIC] of or having to do with the electric effects produced by light or other radiation, esp. as in the emission of electrons by certain substances when subjected to light or radiation of suitable wavelength …
3photoelectric — adj. marked by or using emissions of electrons from substances exposed to light. Phrases and idioms: photoelectric cell a device using this effect to generate current. Derivatives: photoelectricity n …
4Photoelectric efficiency — is described as the decrease in the photoelectric current as the frequency of electromagnetic radiation falling on a metal surface increases. As the frequency of the incident radiation increases with constant intensity, the number of photons in… …
5photoelectric cell — ► NOUN ▪ a device using a photoelectric effect to generate current …
6photoelectric exposure meter — photoelectric exposure meter, Photography. a type of exposure meter in which the light on a subject is measured by a photoelectric cell …
7Photoelectric Device — [engl.], fotoelektrisches Gerät …
8photoelectric cell — n 1.) an electronic instrument that changes light into electricity 2.) an electronic instrument that uses light to start an electrical effect, often used in ↑burglar alarms …
9photoelectric effect — Photoelectric Effect Фотоэлектрический эффект явление испускания электронов веществом под действием света. Было открыто в 1887 Г.Герцем, обнаружившим, что искровой разряд в воздушном промежутке легче возникает при наличии поблизости другого… …
10photoelectric cell — ☆ photoelectric cell n. a photodetector that regulates or produces a current or voltage in response to certain types of radiation, esp. visible light: typically incorporated in an electric circuit and used in mechanical devices as to open doors,… …
