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 209
9, Magnetic Pop Gun. \0. Typical Two-Pols Magnet. Fig. 181.—Typical Forms of Electromagnets J I.Stevens and HardysPlunger Magnet. J90 ELECTR OMA GNETS. 191 structed to meet special requirements, according to the par-ticular work to be performed by them. ^Vhen it is desiredto construct an…
Electricity · Magnetism
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