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 148
eet of paper and bring the wireconductor of the cell into contact with the filings. Notice that thefilings cling to the wire as though it were a magnet. Break thecircuit and notice that the filings fall from the wire. 443. Electro-Magnets.—From these experiments,we see that while the wire conductor… … Fig. 226. magnet. In fact^ such a conductor is a temporary mag-net. The magnetic effect is much increased if a con-siderable length of the conductor bemade of msulated wire and woundinto a coil^ as shown in Fig. 236.Such a coil is called a helix; it is amagnet with a + pole at one end anda — pole…
Electricity · Magnetism
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