Lynde, Carleton John, b. 1872 · New York : Macmillan · leaf 187
Fig. 1x6. — Making a magnet by meansof an electromagnet. MAGNETISM AND THE ELECTROMAGNET 173 direction AB only, with a north pole, the end B becomes asouth pole and A a north pole. If a piece of steel is laid on the poles of a strong electro-magnet. Fig. 116, and hammered, it becomesa strong…
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