Ambrose Fleming Centenary
100 Years of the Thermionic Valve
Unveiling of the commemorative blue plaque at the Norman Lockyer Observatory, 27th November 2004 (Photographs: Dave Lee).
 John Ambrose Fleming F.R.S. |
 Fleming Oscillation Valve (Mounted in Edison-screw lampholder) |
Bill Gregory (G3AQM) operating the Ambrose Fleming Centenary special event-station GB2AFC, at the Norman Lockyer Observatory, November 2004. Photo: Dave Lee, G6XUV.
 |
Early diode valve. This item is part of the collection of the Porthcurno Telegraph Museum. Photo: Dave Knight |
Related Information
"The Genesis of the Thermionic Valve", 1954 IEE lecture by Prof. G W O Howe.
British Patent No. 24850 .
US Patent No 803684 .
"Report on the Supply of Electronic Valves and Cathode Ray Tubes". Monopolies and Restrictive Practices Commission, 1956.
Andy Cowley's Valve pages .
Mike's Electric Stuff .
Porthcurno Telegraph Museum .
