Gerard, Eric Mary, 1856-1916 · New York W.J. Johnston · leaf 316
— 0), E = E^ cos 0 sin {at — 0). We will then get three sinusoidal curves like those inFig. 93; the sine-curve E represents the E, M. F. due to therield; e is the E.M.F. of telf-induction and E the effectiveor resultant E, M. F. The ordinates of E are the differencesbetween those of E and e. 300… … Fig. 93. The retardation of the current-phase behind that of theE. M. F. due to the field is T where 27t (p = tan —.r The maximum possible retardation corresponds to ■ = 00 . r We have then 0 = — and d— — , It will be observed that the curve ^ is a quarter phase, or T —, behind the curve E.…
Electricity · Magnetism
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