Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 29
nit pole is 4x, therefore the number froma pole of strength m is 4n-m. CHAPTER IIELECTROMAGNETISM 6. Direction of an Electric Current—P and Q, Fig. 5, areconductors carrying current; the current is going down in con-ductor P and coming up in conductor Q. Let the directionof the current be… … Out In Fig. 5.—Direction of an electric current. 7. Magnetic Field Surrounding a Conductor Carrying Current.—A conductor carrying current is surrounded by a magneticfield represented by lines of force as shown in Fig. 6. To deter-
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Cosmographia in qvatvor libros distribvta summo ordine, miraqve facilitate, ac breuitate ad magnam Ptolemæi mathematicam constructionem, ad vniuersamque astrologiam institutens. Francisco Barocio ... avtore. Cum præfatione eiusdem autoris, in qua perfecta quidem astrologiæ diuisio, & enarratio autorum illustrium, & voluminum ab eis conscriptorum in singulis astrologiæ partibus habetur: Joannis de Sacrobosco verò 84 errores, et alij permulti suorum expositorum, & sectatorum ostenduntur. rationibusq[uam] redarguuntur. Præcesserunt etiam quædam communia mathematica, necnon arithmetica, & geometrica principia, nonnullæq[uam] propositiones, de quibus in toto opere sæpe fit mentio: ac demum locupletissimus index eorum, quæ ipsa Cosmographia continentur .. (1585)](https://img.insideoutlibrary.com/img/200/ia-cosmographiainqv00baro-123-43.webp)