Christine Matthews on Geograph Professor Sir John Ambrose Fleming 1849-1945 Inventor of the diode radio valve, pioneer in wireless telegraphy. He was a friend of this Observatory and lived in Sidmouth, 1926-1945 , Sidmouth Colour: This plaque is purple, white and green glass claret orange purple clear bronze grey stone red slate wood blue black brass multicoloured pink brushed metal green maroon film cell green and red Belgian Blue Stone red and black yellow terracotta marble brown silver white gold Wikimedia: Flickr: Google Streetview OpenStreetMap See also... Nick Harrison on Flickr All Rights Reserved Sir Edward Frankland FRS 1825-1899, chemist & Sir John Ambrose Fleming FRS 1849-1945, ... David Stowell on Geograph
