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 182
N.rtfiPolof Helix … Fig. 145.Solenoid. Fig. 146.—Polarity of the Helix.The whirls of one turn unite with those of the next. the turns constituting the field, or total number of lines offorce passing through the helix. This diagram shows the di-rection of current through the helix, the direction of the 164 PRA GTIOA L…
Electricity · Magnetism
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
