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 27
y throttled on its way down tothe muscle, and remains so throttled for a time varying froma few minutes to an hour after the cessation of the violence.[I did not show this experiment at the lecture.] Air Gap and Electroscope charged by Glass Rod and discharged bytJie Wave Impulse from a moderately… … Fia. 16.—Air gap for Electroscope. Natural size. The bottom plate isconnected to, and represents, the cap of an electroscope; the knob aboveit, mentioned in text, is the polished end of the screw, whose terminalis connected with the case of the instrument or earth. The electroscopebeing charged to…
Electric waves · Telegraph, Wireless · Electricity · Wireless Technology
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