Thermionic valve 1920 -Thermionic valve, 1920 - drawing of the valve, resulting from Sir Ambrose Fleming 's invention of 1904, that revolutionised wireless telephony. Fleming: 29 November 1849 - 18 April 1945.
© Copyright Lebrecht Music & Arts Photo Library 2008 - All Rights Reserved
Please Note: Any white borders on the above preview may also appear on the final print.
Rate This Item
    Be the first to rate this item from 1 to 5 stars
Report this item
You may be interested in these collections related to Thermionic valve 1920 -
> Similar Colours
> Inventions
Thermionic valve 1920 - Keywords
drawing, early 20th century, physicist, radio, science, scientist, social history, technology, thermionic, twenties, valve
|