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 186
ues. How does the velocity vary with the lengths? Ans. As a rule the velocity decreases as the wave lengthdecreases, or in other words, the larger waves suffer less atten-uation in passing through various forms of ordinary matter,and therefore, are capable of penetrating the medium propa-gating… … Fig. 3,109.—Experiment with guitar to illustrate the fact that air waves, when set in motionby one string of a certain note will cause to vibrate another string tuned to the same note.In trying this experiment, to avoid troublesome stretching of strings, it will be advisableto keep about a…
Electrical engineering
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