| NOUN | artifact | electron gun | the electrode that is the source of electrons in a cathode-ray tube or electron microscope |
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| Meaning | The 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. | |
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| 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 | |
| Broader | electrode | A conductor used to make electrical contact with some part of a circuit |
| Catalan | canó d'electrons | |
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