cathode ray

cathode ray
noun
a beam of electrons emitted by the cathode of an electrical discharge tube
Hypernyms: ↑beam, ↑ray, ↑electron beam

Useful english dictionary. 2012.

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  • Cathode ray — Cathode rays (also called an electron beam or e beam) are streams of electrons observed in vacuum tubes, i.e. evacuated glass tubes that are equipped with at least two electrodes, a cathode (negative electrode) and an anode (positive electrode)… …   Wikipedia

  • Cathode ray — Cathode Cath ode, n. [Gr. ? descent; ? down + ? way.] (Physics) The part of a voltaic battery by which the electric current leaves substances through which it passes, or the surface at which the electric current passes out of the electrolyte; the …   The Collaborative International Dictionary of English

  • cathode ray — a flow of electrons emanating from a cathode in a vacuum tube and focused into a narrow beam. [1875 80] * * * Stream of electrons leaving the negative electrode, or cathode, in an evacuated or gas filled discharge tube or emitted by a heated… …   Universalium

  • cathode ray — noun Cathode ray is used before these nouns: ↑tube …   Collocations dictionary

  • cathode ray tube — UK US noun [countable] [singular cathode ray tube plural cathode ray tubes] physics a piece of equipment in televisions and some computers that creates the image on the screen. A beam of high energy …   Useful english dictionary

  • cathode-ray tube — cathode ray tubes N COUNT A cathode ray tube is a device in televisions and computer terminals which sends an image onto the screen. [TECHNICAL] …   English dictionary

  • cathode-ray tube — n a vacuum tube in which a beam of electrons is projected on a fluorescent screen to produce a luminous spot * * * a vacuum tube in which the cathode rays are accelerated as a beam to form luminous spots on a fluorescent screen …   Medical dictionary

  • cathode ray tube — n a piece of equipment used in televisions and computers, in which ↑electrons from the cathode produce an image on a screen …   Dictionary of contemporary English

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  • Cathode Ray Tube —   [dt. »Kathodenstrahlröhre«], CRT …   Universal-Lexikon

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