Electricity and magnetism : an elementary text-book, theoretical and practical (1920)
Glazebrook, Richard, Sir, 1854-1935 · Cambridge : The University press · leaf 352
Fig. 213 a. Fig. 213 5. the interior of the spiral pass through the paper from belowupwards leaving the paper on its upper side; thus the end … Fig. 214. looked at is a north pole: if however the direction of thecurrent be as in Fig. 213 6, the lines of force enter the paper 208-209] MAGNETISATION OF IRON 343 from above; the end is a south pole. This we have seen alreadyin Section 201. Electromagnets take various forms as shewnin Fig. 214…
Electricity · Magnetism
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