Electricity and magnetism for advanced students (1920)
Starling, Sydney George, 1873- · London Longmans, Green · leaf 253
in opposite direc-tions the force drives 4 awayfrom z\. In each case anequal and opposite force actson each unit length of t^, andwe see that currents in thesame direction attract eachother ; those in opposite direc-tions repel each other. On drawing the magneticlines of force due to the… … Fig. 240.
Electricity · Magnetism
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
