Inside Out Library

I.C.S. reference library : a series of textbooks prepared for the students of the International Correspondence Schools and containing in permanent form the instruction papers examination questions, and keys used in their various courses (1904)

International Correspondence Schools · Scranton : International Textbook Co. · leaf 403

An illustration from I.C.S. reference library : a series of textbooks prepared for the students of the International Correspondence Schools and containing in permanent form the instruction papers examination questions, and keys used in their various courses, 1904, leaf 403 — er wire w iswound in layers in the bobbin, asshown by the cross-section inFig. 28. The rule for determining thepolarity of a solenoid is the same for an electromagnet.It makes no difference whether the wire is wound in onelayer or in any number of layers, or whether it is woundtowards one end and… … Fig. 28. 32. The most convenient form of electromagnet for agreat variety of uses is the horseshoe, or \}-shaped, electro-magnet. Fig. 30. It consists of a bar of iron bent into theshape of a horseshoe with straight ends and provided withtwo magnetizing coils, one on each end of the magnet. Thetwo…

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