Meaning | A tube in which an electric discharge takes place through a gas. |
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Narrower | 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 |
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glow lamp | A gas-discharge tube with a hot cathode |
glow tube | A gas-discharge tube consisting of a cold cathode and a diode in a tube filled with gas |
Broader | tube, vacuum tube, thermionic vacuum tube, thermionic tube, electron tube, thermionic valve | electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope |
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