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Triumphs and wonders of the 19th century, the true mirror of a phenomenal era, a volume of original, entertaining and instructive historic and descriptive writings, showing the many and marvellous achievements which distinguish an hundred years of material, intellectual, social and moral progress .. (1899)

Boyd, James Penny, 1836-1910 · Philadelphia, Pa., A. J. Holman & Co · leaf 34

An illustration from Triumphs and wonders of the 19th century, the true mirror of a phenomenal era, a volume of original, entertaining and instructive historic and descriptive writings, showing the many and marvellous achievements which distinguish an hundred years of material, intellectual, social and moral progress .., 1899, leaf 34
erVoltaic batteries, it was not until Faraday began his splendid series of elec-trical discoveries, in 1831, that a new and exhaustless wellspring of electri-city was found to lay at the door of science. Faradays prime discovery wasI that of the induction of electric currents, or, in other words,… … INDUCTION COIL. 26 TRIUMPHS AND WONDERS OF THE XIX™ CENTURY sists of an iron core wrapped with two coils of insulated wire. One coil is ofvery lengthy, thin wire, and is called the secondary coil. The other is ofshort, thick wire, and is called the primary. When a magnetic current ispassed through…

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