A vacuum tube, also called an electron tube or thermionic valve, is a device that controls electric current flow in a high vacuum between electrodes to which an electric potential difference has been applied. The first and simplest vacuum tube, the diode or Fleming valve, was invented in 1904 by John Ambrose Fleming. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
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Source Vacuum Tube (Wikipedia)
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1. Vacuum Tube (Wikipedia)
WikipediaLead section (entity-description)
A vacuum tube, vac tube, electron tube, thermionic valve (British usage), or tube (North America) is a device that controls electric current flow in a high vacuum between electrodes to which an electric potential difference has been applied.
Lead section (Fleming)
The first, and simplest, vacuum tube, the diode or Fleming valve, was invented in 1904 by John Ambrose Fleming.
Invented By: John Ambrose Fleming, History section (inventor attribution)
The first, and simplest, vacuum tube, the diode or Fleming valve, was invented in 1904 by John Ambrose Fleming.
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