cathode ray
noun Date: 1880 1. plural the high-speed electrons emitted in a stream from the heated cathode of a vacuum tube 2. a stream of electrons emitted from the cathode of a vacuum tube — usually used in plural

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • 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 — Synonyms and related words: Becquerel ray, Grenz ray, Roentgen ray, X radiation, X ray, actinic ray, alpha radiation, alpha ray, anode ray, beta radiation, beta ray, canal ray, cathode glow, collision emission, cosmic radiation, cosmic ray,… …   Moby Thesaurus

  • cathode ray — cath′ode ray n. elo a flow of electrons emanating from a cathode in a vacuum tube and focused into a narrow beam • Etymology: 1875–80 …   From formal English to slang

  • cathode ray — /kæθoʊd ˈreɪ/ (say kathohd ray) noun a stream of electrons generated at the cathode during an electric discharge in an evacuated tube …   Australian English dictionary

  • cathode ray — noun a beam of electrons emitted by the cathode of an electrical discharge tube • Hypernyms: ↑beam, ↑ray, ↑electron beam …   Useful english dictionary

  • cathode ray — noun a beam of electrons emitted from the cathode of a high vacuum tube …   English new terms 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

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