Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1059
ectro-Magnetic Induction,—If we take a coil of wire,Fig. 424^ and rapidly thrust a magnet into it, we shallobserve a certain deflection of the galvanometer needleshown with it. This deflection continues only while themagnet is in motion. After we have inserted the magnetand it has come to rest the… … Fig. 424 motion, the deflection will be considerable. If the magnetis very slowly inserted, or withdrawn the deflection willhardly be noticeable. The same phenomena will occur ifinstead of moving the magnet, we hold it stationary andmove the coil, or if both of them be moved towards or fromeach…
