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photoemissive material

См. также в других словарях:

  • Mellon optical memory — was an early form of computer memory invented at the Mellon Institute in the 1950s. The device used a combination of photoemissive and phosphorescent materials to produce a light loop between two surfaces. The presence or lack of light, detected… …   Wikipedia

  • spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… …   Universalium

  • Caesium — xenon ← caesium → barium Rb ↑ Cs ↓ Fr …   Wikipedia

  • light — light1 lightful, adj. lightfully, adv. /luyt/, n., adj., lighter, lightest, v., lighted or lit, lighting. n. 1. something that makes things visible or affords illumination: All colors depend on light. 2. Physics …   Universalium

  • Photoelectric effect — The photoelectric effect is a quantum electronic phenomenon in which electrons are emitted from matter after the absorption of energy from electromagnetic radiation such as x rays or visible light.cite book | title = Physics for Scientists… …   Wikipedia

  • Photomultiplier — tubes (photomultipliers or PMTs for short), members of the class of vacuum tubes, and more specifically phototubes, are extremely sensitive detectors of light in the ultraviolet, visible, and near infrared ranges of the electromagnetic spectrum.… …   Wikipedia

  • photoemission — noun Date: 1916 the release of electrons from a usually solid material (as a metal) by means of energy supplied by incidence of radiation and especially light • photoemissive adjective …   New Collegiate Dictionary

  • Photodetektor — Photodetektor,   Fotodetektor, Photo|empfänger, Foto|empfänger, Lichtdetektor, ọptisch elẹktrischer Wandler, Strahlungsempfänger zum Nachweis oder zur intensitätsproportionalen Anzeige oder …   Universal-Lexikon

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