The elements of natural philosophy : copiously illustrated by familiar experiments and containing descriptions of instruments, with directions for using : designed for the use of schools and academies (1856)
Sprague, A. W. (Alfred White), 1821-1891 · Boston : Phillips, Sampson & Company · leaf 263
south polarity, likea common magnet. Such is termed an Electro-Magnet. 231. Soft iron, in such a position, instantaneously acquires and loses its magnetism whenever connection with the battery is made and broken. Hardened steel becomes less readily magnetic, but retains its magnetism after the… … insulated copper wire is mounted on a stand, with its two endsterminating in the bottom of the screw-cups. Connect the Effect on soft iron in such a position ? On hardened steel ? Explain FJf209. 22* 258 MAGNETISM FROM ELECTRIC CURRENTS. Fig. 210. poles of the battery with the screw-cups upon the…
Physics
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