What is recorded here
This commemorative plaque records: 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
Sir John Ambrose Fleming FRS was a pioneering electrical engineer who invented the thermionic valve or diode in 1904, crucial for the development of radio technology and early electronics. His work significantly advanced wireless telegraphy and laid foundational elements for modern electronic devices.
A plaque record does not grant entry to a building or private land. View it from a public place unless permission is clearly given.
Places near here
The Kensington Dome at the Norman Lockyer ObservatoryListed building · 59 yd
Military Boundary StoneMonument or public art · 707 yd
Soldier's HillForest · 781 yd
War MemorialMemorial · 793 yd
Salcombe Regis War MemorialListed building · 794 yd
Sidmouth Information CentreVisitor information · 1591 yd
Sidmouth MuseumMuseum · 1.1 mi
Tudor CottageMemorial · 1.1 mi
Sidmouth Toy and Model MuseumMuseum · 1.1 mi
Sidford packhorse bridge, Church StreetScheduled monument · 1.1 mi
Glen Goyle WaterfallWaterfall · 1.3 mi
Wheat HillForest · 1.3 miOther information
Photo: Christine Matthews on Geograph · CC BY-SA 2.0