Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 190
w electric waves may slide over the surface ofconducting wires with wave fronts perpendicular to the directionof the wires. As the spark gap of the oscillator is located very close to the surfaceof the earth relatively to the height of the radiating wire, it is assumedthat the electric waves are… … Pig. 3,117.—Experiment in resonance. If two oscillatory circuits consisting in each case ofa Ley den jar and an external circuit possessing inductance be taken, it is found that adischarge in one circuit will produce a discharge in the other. Under certain conditions,sparks are found to oscillate…
Electrical engineering
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