Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 287
Fig. 69. Fig. 70. If the two sets of poles are excited at the same time by currents of equalstrength, then the needle will take its position diagonally, half way be-tween the two sets of poles, as will be seen by the following diagram. It is now easily conceivable that if one of these currents is…
Electrical engineering
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