electron tube
Definition of electron tube
: an electronic device in which conduction by electrons takes place through a vacuum or a gaseous medium within a sealed glass or metal container and which has various uses based on the controlled flow of electrons
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First Known Use of electron tube
1919
ELECTRON TUBE Defined for Kids
electron tube
Definition of electron tube for Students
: a device in which conduction of electricity by electrons takes place through a vacuum or a gas within a sealed container and which has various uses (as in radio and television)
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Britannica.com: Encyclopedia article about electron tube
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