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English engineer John Ambrose Fleming receives a patent for the thermionic valve (vacuum tube).
Related Wikipedia articles
John Ambrose Fleming
English electrical engineer (1849–1945)
Sir John Ambrose Fleming was an English electrical engineer who invented the vacuum tube, designed the radio transmitter with which the first transatlantic radio transmission was made, and also established the right-hand rule used in physics.Source: Wikipedia (CC BY-SA)
Vacuum tube
Device that controls current between electrodes
A vacuum tube, electron tube, thermionic valve, or tube is a device that controls electric current flow in a high vacuum between electrodes to which an electric potential difference has been applied. It takes the form of an evacuated tubular envelope of glass or sometimes metal…Source: Wikipedia (CC BY-SA)