electron gun
Noun
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is a type of: electrode - a conductor used to make electrical contact with some part of a circuitis a part of:
- cathode-ray tube, crt - a 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 microscope - a 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
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