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
Bakelite
invented by Leo Baekeland
Polyoxybenzylmethylenglycolanhydride, better known as Bakelite…
Stereolithography
invented by Chuck Hull
Stereolithography (SLA or SL; also known as stereolithography apparatus,…
DVD
invented by Panasonic Philips Sony Toshiba
The DVD (common abbreviation for Digital Video Disc or Digital Versatile Disc)…
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