Title
thermionic tube or thermionic valve
Caption
thermionic tube or thermionic valve Invented in about 1910, were a basic component for electronics throughout the first half of the century, which saw the diffusion of radio, television, radar, sound reinforcement
Date
1910
Credit line
Photo12/Ann Ronan Picture Library
Reference
ARP18A30_303
License type
Rights managed
Available size
30,0Mb (2,3Mb) / 9,3in x 12,6in / 2778 x 3780 (300dpi)