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 13
dy has a persistentperiod of vibration, continuing in motion long after it is leftto itself (Fig. 2) like another tuning-fork or bell, for instance,then far more facility of response exists, but great accuracy oftuning is necessary if it is to be fully called out; for if thereceiver is not thus… … Fig. 2.—Oscillation of Ring-shaped Hertz Resonator excited by SyntonicVibrator (after Bjerknes). motion which it originated the previous moment. Whereas,if it is a dead-beat or strongly-damped exciter, almost any-thing will respond equally well or equally ill to it. What I have said of sounding…
Electric waves · Telegraph, Wireless · Electricity · Wireless Technology
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