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 39
Fig. 31.—Repulsion BetweenLike Poles. Fig. 32.—Magnetic Field of theXnd of a Bar Magnet. 20 PRACTICAL ELECTRICITY. Many other possible combinations of magnets to produce thesemagnetic figures will occur to the student. A thoroughknowledge of the direction of lines of force, as depicted by … Fig. 33.—Magnetic Field of a Horseshoe Magnet. the graphical representations of magnetic fields, will greatlyassist in the understanding of the phenomena of electro-magnetism and electromagnetic induction, to be consideredlater. 25. Axis and Equator of Bar Magnet.—The straightline joining the N and…
Electricity · Magnetism
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