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 173
cular lines of force, or mag-netic whi?is, do not mergeinto, cross, or cut eachother, but complete their cir-cuits independently aroundthe wire. 167. Direction of the Fis-13°-Lines of Force of a Q+vair»Vi+ fiiT>vQTi+ rtQvr,Tr The compass needles on the horizontal card•OTdTcilgnu UUrreill-Ocirry-… … -Current Flowing Up-Anti-Clockwise. -Whirls ELECTROMA GXETISM. 155 around the wire in the form of a circle, Fig. 130, of such diameterthat all the needles point nearly N and S. Pass a strong currentthrough the wire from a batteryso that the current flows up, or to-ward you as you look down upon the…
Electricity · Magnetism
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