Electricians' operating and testing manual; (1910)
Horstmann, Henry C. [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] joint author · Chicago, F. H. Drake & co · leaf 22
nite time, while iron, espe-cially if it be well annealed and soft, looses its mag-netism the instant the magnetizing force ceases to act.A bar of iron will attract the needle as well as thesteel but to a lesser extent; with the steel bar the at-tracting or repelling force will be due to the action… … Figure 3 horse-shoe shape or in the form of straight bars asshown in the following figures. It is impossible tomake a magnet with one pole only. No matter intohow many pieces we may divide a magnetized bar.each piece wiH possess a north and a south pole. Thisis illustrated in Figure 3 where the…
Electrical engineering · Electric testing
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