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
visual line to the oscil-lator, will be disturbed by the waves, and absorbing a portion of theenergy carried by them, will respond to any signals that may originatefrom the oscillator. Considering the curvature of the earth, as shown in fig. 3,113, therarefied air will reflect the waves back again…
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
