Modern electricity and magnetism, theoretically and practically considered (1885)
Avery, Elroy M[cKendree], 1844- [from old catalog] · New York and Chicago, Sheldon and company · leaf 123
Fig. 199. 417. Deflection of the Magnetic Needle.— We have already seen that the voltaic current has amarked effect in turning the magnetic needle from its northand south position, tending to place the needle at rightangles to the direction of the current. This may be easilyshown by Oersted^s… … 292 VOLTAIC ELECTRICITY, consists of a magnetic needle and a brass wire frame withthree pole-cups, permitting the current to be passed over, under, or around the magnet. Thespace irmnediately surround-ing a ivire carrying an electriccurrent is a field of magneticforce as truly as is the spacearound…
Electricity · Magnetism
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