ELECTRON GUN Definition & Meaning

electron gun

noun

Electronics, Television.

a device consisting of the cathode ray tube, which emits electrons, and a surrounding electrostatic or electromagnetic apparatus, which controls, focuses, and accelerates the stream of electrons electron beam.

electron gun

noun

a heated cathode with an associated system of electrodes and coils for producing and focusing a beam of electrons, used esp in cathode-ray tubes

electron gun

The part of a cathode-ray tube that emits a narrow beam of electrons, consisting of a cathode, control grids, and usually a heater. Electrons are emitted from the cathode, which is typically heated by electric current to give the electrons escape energy. The electrons are then focused into a beam by the electric fields of the control grids.

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�y��vlog History and Origins

Origin of electron gun¹

First recorded in 1920–25

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Example Sentences

Examples have not been reviewed.

Lui works with a German engineer who helps refurbish tubes — by installing a new electron gun to fix yellowing, for example.

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And so is the tether, because the craft also carries a solar-powered electron gun that shoots out into space a stream of electrons scavenged from the wires.

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Last October, physicists fired electrons from an electron gun through the spectrometer.

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The solar wind’s negatively charged particles are discharged by means of an “electron gun,” so that the e-sail maintains a positive electric field.

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The electron gun shown on the right provides particles for the electron cooling of antiprotons.

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