Inventions
Vacuum Tube
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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.
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1. Vacuum Tube (Wikipedia)
WikipediaLead section (entity-description)Quote, Lead 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.
1. Vacuum Tube (Wikipedia)
WikipediaLead section (Fleming)Quote, Lead section (Fleming)
The first, and simplest, vacuum tube, the diode or Fleming valve, was invented in 1904 by John Ambrose Fleming.
1. Vacuum Tube (Wikipedia)
WikipediaInvented By: John Ambrose Fleming, History section (inventor attribution)Quote, 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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