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![]() FLEMING, Sir (John) Ambrose (1849-1945). Electrical engineer. Inventor of the wireless valve. Three Autograph Letters Signed to Menzies at the Royal Society of Arts, 3 pages 4to and 1 page 8vo, University College, September 1918 - January 1919. Making arrangements to deliver a series of Cantor Lectures. '... I could not do anything very highly experimental as I am entirely bereft of all assistants and mechanics but I am giving a course of University lectures on the Scientific Problems of Radiotelegraphy before Christmas and it is possible to convert this into a more or less popular form ...'The three lectures were separately entitled: 'Electric Wave Radiation', 'Electric Wave Transmission' and 'Electric Wave Detection'. [No: 8073] The image is of one letter only.
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