A natural philosophy : embracing the most recent discoveries in the various branches of physics, and exhibiting the application of scientific principles in everyday life .. (1899)
Quackenbos, G. P. (George Payn), 1826-1881 · New York, Cincinnati [etc.], American book company · leaf 356
are insulated from each other Fig. 314 where they cross. No sooner is a JP Jr positive current passed over the upper wire from north to south,. than the needle is turned, its A north pole deviating towards the east and its south pole to the west. Here the under current, pass-ing in the opposite…
Physics
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