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 178
ht-Hand Rule for Direc-tion of Whirls.—If the Directionof Current in any Circuit is Known,the Direction of the Circular Magnetic Field Around theWire May re Found as Follows: Place the palm of the outstretched right hand above the wire,with the fingers pointing in the direction of the current, and…
Electricity · Magnetism
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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