. 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. ee times as many periods persecond as curve A. All the curves, however, cross the zero line at the same time, and theresultant curve, though curiously unlike either of them, has a certain symmetry. In Xo. 2the component curves, besides having periods in the ratio of three to one, crosd-the zeroline at different points. The resultant curve produced is still
. 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. ee times as many periods persecond as curve A. All the curves, however, cross the zero line at the same time, and theresultant curve, though curiously unlike either of them, has a certain symmetry. In Xo. 2the component curves, besides having periods in the ratio of three to one, crosd-the zeroline at different points. The resultant curve produced is still less similar to its components,and is curiously and unsymmetrically humped. At first sight it is difficult to beKeve thatsuch a curious curve 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 sine law. in speed from the end to the middle of the swing, decreasing atthe same rate after passing the center. This swing is expressedin physics, as simple harmonic motion. IIAWKIXS ELECTRICITY.
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