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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顎僼ron beam顎.
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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亚洲网紅露点 History and Origins
Origin of electron gun1
First recorded in 1920鈥25
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Example Sentences
Examples have not been reviewed.
Lui works with a German engineer who helps refurbish tubes 鈥 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鈥檚 negatively charged particles are discharged by means of an 鈥渆lectron gun,鈥 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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