Gage, Alfred P. (Alfred Payson), 1836-1903 · Boston, London, Ginn · leaf 572
Fig. 441. EARTH INDUOTIOK. 551 Such a coil with a galvanometer G in circuit is representedin Fig. 442. The rotation of the coil across the magnetic … Fig. 442. lines of force of the earth effects a change of the number oflines of force passing through it, as may be understood byinspection of Pig. 443, and this creates temporary currentsin the coil. By examination of Fig. 443 it will be seen that there arein each complete rotation of the coil two…
Physics
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