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Things a boy should know about electricity (1900)

St. John, Thomas M. (Thomas Matthew), b. 1865 · New York, T. M. St. John · leaf 83

An illustration from Things a boy should know about electricity, 1900, leaf 83
coil.(See Study, Chapter XXV., for experiments oninduced currents.) CHAPTER XIII. HOW THE INDUCTION COIL WOEKS. 103. The Coils. We saw, § 102, that an inducedcurrent was generated when a current-carrying coil, Fig.loi, was thrust into another coil connedted with a galva-nometer. The galvanometer… … Fig. 102. the effedt upon a neighboring coil is the same as that pro-duced by suddenly bringing a magnet near it; and whenthe current stops, the opposite effedl is produced. It isevident, then, that we can keep the small coil of Fig. loiwith its core inside of the large coil, and generate…

Electricity

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