Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1903)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 209
% Magnetic Pop Gun, 10. Typical Two-Pole Magnet. Fig. 181.—Typical Forms of Electromagnets. 11. Stevens and HardysPlunger Magnet. ELECTROMA GNEfS. 1W structed to meet special requirements, according to the par-ticular work to be performed by them. When it is desiredto construct an electromagnet…
Electricity · Magnetism
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