Dictionary

electron tube

noun

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

1922
ELECTRON TUBE Defined for Kids

electron tube

noun

Definition of ELECTRON TUBE for Kids

:  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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