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 181
urn in thedirection of its axis; the coiwill be attracted, and carryingthe cell with it, move along themagnet till it reaches the mid-dle point, or equator. Thefigure also illustrates the direc-tion of the currents and mag-nets magnetic lines. The lawsof attraction and repulsionshould be verified… … -AeiiLT ;_v: yy^MM1---!-^ Fig. 143.—Testing the PolaritySingle Turn of Wire. of The turn is connected to a floating batteryand is free to move. ELECTROMA GNETISM. 1C3 handed. The polarity can be reversed by re-winding in theopposite direction and passing the current, as indicated inFig. 144, or by…
Electricity · Magnetism
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