Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 204
through the ironcore of the solenoid is the sameas their natural direction throughthe solenoid alone, so that all thelaws for polarity of the solenoidgiven under electromagnetism.Lesson XV, apply also to anelectromagnet. By applying theprinciple of the molecular theoryof magnetism, % 26, the… … Fig. 14— Magnetic Field ofa Solenoid and Core. Made with iron filings ou a hori-zontal piece of cardboard. 186 PRACTICAL ELECTRICITY. the iron bar, causing them to change the relation of theiiinternal magnetic circuits with respect to each other, thusproducing an external field near the ends of the…
Electricity · Magnetism
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