Modern electricity and magnetism, theoretically and practically considered (1885)
Avery, Elroy M[cKendree], 1844- [from old catalog] · New York and Chicago, Sheldon and company · leaf 19
188 GENERAL VIEW, of the other wire be drawn along its rough surface, a series ofminute sparks will he produced as the circuit is rapidly made andbroken. Experiment 16.—Place the cell so that the joined wires shall runnorth and south, passing directly over the needle of a small com-pass (Experiment… … Fig. 126. 306. Certainty.—We now feel sure that somethingunusual is taking place in the wire of our complete circuit,for we have seen the wire become hot, explode gun-cotton,yield sparks and exert a very mysterious influence uponthe magnetic needle. As a matter of fact, we now havea current of…
Electricity · Magnetism
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