Signalling through space without wires : being a description of the work of Hertz & his successors (1900)
Lodge, Oliver, Sir, 1851-1940, Hertz, Heinrich, 1857-1894 · London : "The Electrician" Printing and Publishing Company, Limited · leaf 71
bandwhich is moved by a 12-hour clockwork cylinder, I obtain aninstrument registering by a cross line on the moving band 62 SIGNALLING WITHOUT WIRES. every electric wave that reaches the coherer from across theatmosphere. Such an apparatus was placed at the Meteoro-logical Observatory at St.… … Fia. 42 (Fig. 2 on p. 235 of The Electrician, Vol. XL.).—Method ofautomatic tapping back by relay-current employed for telegraphy byProf. Popoff in 1895. Prof. Popoff then goes on to say that his apparatus workswell as a lightning recorder, and that he hopes it can be usedfor signalling to great…
Electric waves · Telegraph, Wireless · Electricity · Wireless Technology
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