Gage, Alfred P. (Alfred Payson), 1836-1903 · Boston, London, Ginn · leaf 571
nd therefore anymovement makes a greater rate of change, and hence a greaterinduced electro-motive force. 518. Earth induction. — Call to mind that the earth itselfis a great magnet, and that its lines of force pass throughour atmosphere from pole to pole, and it will be easy to con-ceive that the… … 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
Physics
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