. The principles of physics. in the form of an inverted letter U A(Tig. 435), on the top of a verticalhorse-shoe magnet. The divided currentpasses through the mercury cups B andC, and leaves by the annular cups D andE which surround the magnet lowerdown. The cups B and 0 and the wirespassing from them to the cups D and Eare so pivoted upon the extremities ofthe magnet as to be free to rotate aroundits poles. When a strong current ispassed through the circuit the wires willrotate in opposite directions round itstwo poles. , The hypothetical currents that circulate round a magneticmolecule we sh
. The principles of physics. in the form of an inverted letter U A(Tig. 435), on the top of a verticalhorse-shoe magnet. The divided currentpasses through the mercury cups B andC, and leaves by the annular cups D andE which surround the magnet lowerdown. The cups B and 0 and the wirespassing from them to the cups D and Eare so pivoted upon the extremities ofthe magnet as to be free to rotate aroundits poles. When a strong current ispassed through the circuit the wires willrotate in opposite directions round itstwo poles. , The hypothetical currents that circulate round a magneticmolecule we shall call amperian currents, to distinguish themfrom the known current that traverses the solenoid. Instrict accordance with this theory, the poles of the electro-magnet are determined by the direction of the current in thehelix. The inductive influence of the electric current causesthe amperian currents to take the same direction with itself,as represented in Fig. 436. By the amperian theory the earths polarity is accounted. Fig. 435.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectphysics, bookyear1895
