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 301
282 PR A CTICA L ELECTRICITY. … Fig. 248.—Attraction and Repul-sion Between Angular Currents. wires. There are also continuous curves embracing bothwires, due to the unison of some of the magnetic lines of bothwires. The wires tend to be drawn together by the tension along these lines of force. Thisattraction is demonstrated…
Electricity · Magnetism
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