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 133
302 MAGNETISM. cult to get it out. This power of resisting magnetization or demagnetization is called coercive forceor retentivity. The harder the steel, the greater its re-tentiyity. Soft wrought iron has but Httle retentivity. 436. Distribution of Magnetism.—If a bar magnet be rolled in iron… … 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…
Electricity · Magnetism
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