An elementary manual of radiotelegraphy and radiotelephony for students and operators (1916)
Fleming, J. A. (John Ambrose), Sir, 1849-1945 · London, Longmans, Green & co. · leaf 285
at that time being sent out from the Poldhustation. It was thus demonstrated that the electromagneticwaves made by no extravagant power ex])enditure in Cornwallcould be detected at a distance of nearly 2000 miles, in spite of theconsiderable curvature of the sea surface in that distance. This… … Fig. 18.—Apparatus for Multiple Transformation of Oacillationa(Fleming). Marconi returned to England in February, 1902, and at oncemade arrangements for the erection at Poldhu of a permanentstructure for carrying a large antenna. This consisted of fourwooden lattice towers, 215 feet in height,…
Radio · Telegraph, Wireless · Telephone, Wireless
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