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 26
results. 13. Magnetisation by Divided Stroke.—Place the steelbar to be magnetised on twoother bar magnets, as shownin Fig. 9. Take two addi-tional magnets, one in eachhand, with the polarities in-dicated, and proceedingfrom the centre, with unlikepoles, stroke towards theends in the direction of… … Fig. 8.—Magnetising a HorseshoeMagnet. r \ /
Electricity · Magnetism
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