Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 132
qual to one line of force per square 112 HAWKINS ELECTRICITY centimetre. Named after Karl Friedrich Gauss, the Germanmathematician. The Magnetic Effect of the Current.—Hans ChristianOerstead, the Danish scientist, discovered in 1819 that a magnettends to set itself at right angles to a wire… … Fig. 112.—Illustrating Maxwells corkscrew rule for relative directions of current andlines of force. According to the rule: the direction of the current and that of the resultingmagnetic force are in the same relation to each other as is the forward travel and rotation of anordinary corkscrew.…
Electrical engineering
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