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 172
rying Wire Attracting Iron Filings. the filings when the current isflowing, and the attraction willbe equal on all sides of the wire,Fig. 127. When the circuit isbroken the filings drop off of thewire. Electromagnetism, as clistin- Fig. 128.—Graphical Magnetic Field ofguished from magnetism in a a… … 154 PRACTICAL ELECTRICITY.
Electricity · Magnetism
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