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 30
are placedat the same end, with the keeper connect-ing them. A laminated, or compound Fig. 16.—Horseshoehorseshoe magnet, built up of a number Magnet and Keeper,of separate horseshoes and fastened to-gether with their like poles at the same end, is depictedin Fig. 17. Laminated horseshoe magnets…
Electricity · Magnetism
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