Andrews, Ernest John, 1863-, Howland, Howard Newell, 1865- joint author · New York, London, The Macmillan company · leaf 195
rsteel is a magnet or not,according as the moleculesare properly arranged. Itwould seem that, when themolecules are arranged sothat a majority of their northpoles point in one direction,and the south poles in the opposite (Fig. 80), the pieceof metal becomes a magnet; and a perfect magnet wouldbe… … Fig. 80. ^>>m^M^ § 309] MAGNETISM 181 without any special arrangement, the body is demagnet-ized. Figures 80 and 81 show, diagrammatically, thesupposed arrangement of molecules in magnetized andunmagnetized steel or iron. Theeffect of arrangement may beillustrated by picking up a nailwith the…
Physics
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