The Age of Vacuum Tubes: Early Devices and the Rise of Radio Communications [Historical]

  title={The Age of Vacuum Tubes: Early Devices and the Rise of Radio Communications [Historical]},
  author={Massimo Guarnieri},
  journal={IEEE Industrial Electronics Magazine},
  • M. Guarnieri
  • Published 3 April 2012
  • History, Physics
  • IEEE Industrial Electronics Magazine
Vacuum tubes exploit the thermionic emission of electrons, which was first observed in 1880 by Thomas Alva Edison (18471931) and his engineers while testing incandescent light bulbs with carbon filaments. After installing the first commercial power stations and distribution systems, Edison went back and detected the current emitted by the hot filament that was received at a plate electrode. Edison registered a patent for this in 1884 (one of the 1,093 patents he registered) so that the leading… 

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