Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1902)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 39
iNfc«i Fig. 32.—Magnetic Field of theEnd of a Bar Magnet. 20 PRACTICAL ELECTRiClfY, 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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