HyperDic: electron_gun

English > 1 sense of the expression electron gun:
NOUNartifactelectron gunthe electrode that is the source of electrons in a cathode-ray tube or electron microscope
English > electron gun: 1 sense > noun 1, artifact
MeaningThe electrode that is the source of electrons in a cathode-ray tube or electron microscope; consists of a cathode that emits a stream of electrons and the electrostatic or electromagnetic apparatus that focuses it.
Part ofcathode-ray tube, CRTA vacuum tube in which a hot cathode emits a beam of electrons that pass through a high voltage anode and are focused or deflected before hitting a phosphorescent screen
electron microscopeA microscope that is similar in purpose to a light microscope but achieves much greater resolving power by using a parallel beam of electrons to illuminate the object instead of a beam of light
BroaderelectrodeA conductor used to make electrical contact with some part of a circuit
Catalancanó d'electrons

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