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 189
OSCILLATOR SURFACE OF THE. EARTH GROUNDED TERMINALFigs. 3,114 to 3,116.^Fessenden sliding half waves; theory based on the experiment madeby Hertz. in which he shows how long, invisible and free electric waves are propa-gated in the same manner as exceedingly short, visible free waves oflight, the…
Electrical engineering
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