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 192
oyed, both the oscillator and the detectorwere of the open circuit type, the oscillator consisting of a verticalwire, called an aerial or an antenna, the upper end of which wassupported by a mast, and the lower end connected to the earththrough a spark gap. The capacity and inductance of the… … Fig. 3,120.—Oscillation of ring shaped Hertz resonator excited by syntonic oscillation. EXAMPLE.—With an antenna 150 feet in height the wave length willbe 600 feet, and the frequency is equal to the velocity divided by the length as: 186,600 X 5,280 600 = 1,642,080 cycles per second. High Frequency…
Electrical engineering
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