A text book of physics, for the use of students of science and engineering (1918)
Duncan, John, d. 1941, Starling, Sydney George, 1873- · London Macmillan · leaf 1019
Fx|Z = FNZ is the e.m.f.between brush and brush. Thisis, of course, in absolute c.g.s.units of e.m.f. .•. e.m.f. of machine= FNZ xlO-8 volts. In some machines a number ofpairs of poles are arranged roundthe circumference of the armature, and the above result gives thee.m.f. for each pair of poles.… … Fig. 935.—Four-pole field magnet.
Physics
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