A vacuum tube, electron tube, 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.
Related
Satellite
invented by Soviet Union
In the context of spaceflight, a satellite is an object that has been…
Haber process
invented by Fritz Haber
The Haber process, also called the Haber–Bosch process, is an artificial…
Lithium-ion battery
invented by Akira Yoshino John B. Goodenough Rachid Yazami
A lithium-ion battery or Li-ion battery is a type of rechargeable battery in…
Fleming valve
invented by John Ambrose Fleming
The Fleming valve, also called the Fleming oscillation valve, was a thermionic…
Suggest an invention you think it should be here
About
Inventions that changed the world
Leave a Reply