Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 52
ncircle the wire in the same direction as do the fingers ofthe hand. Another way of stating this rule is as follows: The rela-tion between the direction of the current in a wire and the direction ofthe magnetic lines about it, is the same as the relation between the direc-tion of the forward motion… … Flg. 39. Exploring Magnetic Field around a Conductor by means of Compass ^and Iron Filings. 42
Electrical engineering
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