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 134
Fig. 208. filings cling to the ends of the bar but not to the middle.This form of attraction is not evenly distributed through-out the bar. It is greatest at or near the ends.These points of greatest attraction are called thepoles of the magnet. It is impossible, by any knownmeans, to develop one… … MAGNETISM, 303 ously developing another pole of opposite sign. The mid-dle of the magnet does not attract iron and is called theequator or neutral point. Experiment 31.—Bring either end of a bar magnet near the endof a floating piece of iron, AB ; the iron isattracted. Bring the same end of…
Electricity · Magnetism
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