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- · New York, T. Audel · leaf 30
e could be resolved into two such simple and symmetrical ones. Inboth figures the component curves are sine curves, and as the curves for sine and cosinefunctions are exactly similar in form, the simplest supposition that can be made for thevariation of pressure or of current is that both follow a…
Electrical engineering
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