RM cathode

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• cathode — [ katɔd ] n. f. • 1838; formé en angl. par Faraday d apr. le gr. kata « en bas » et hodos « chemin » ♦ Sc. Électrode négative (opposé à anode, anticathode).⇒ électrolyse. Pôle d une pile d une batterie chargé positivement. ● cathode nom féminin ( …   Encyclopédie Universelle

• 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 Froide — PC modifié intégrant un éclairage à cathode froide. Le terme de cathode froide est employé pour les tubes électroniques lorsque la cathode n est pas chauffée. Dans ce genre de tubes ce n est pas l effet thermoïonique qui est utilisé pour… …   Wikipédia en Français

• cathode rays — plural noun Streams of negatively charged particles (electrons) proceeding from the cathode of a vacuum tube • • • Main Entry: ↑cathode * * * cathode rays, the invisible streams of electrons from the cathode in a vacuum tube. When cathode rays… …   Useful english 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 — 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 — 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 rays — n. streams of electrons projected from the surface of a cathode: cathode rays produce X rays when they strike solids * * * …   Universalium

• cathode — 1834, from Gk. kathodos a way down, from kata down + hodos way (see CEDE (Cf. cede)). So called from the path the electric current was supposed to take. Related: Cathodic. Cathode ray first attested 1880, but the phenomenon known from 1859;… …   Etymology dictionary

• cathode rays — n. streams of electrons projected from the surface of a cathode: cathode rays produce X rays when they strike solids …   English World 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