Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 434
Fio. 510.—An electro-magnet—horseshoeform. Tir-ivcA «lir»P Fia. 511.—An electromagnetiiuibe j>uuB —joke form. 424 MAGNETIC RELATIONS OF THE CURRENT Fig. 511. The lines of force thus pass from one pole to theother through the iron body held against them. 504. Strength of an Electromagnet. The…
Physics
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