Elementary lessons in electricity and magnetism (1906)
Thompson, Silvanus P. (Silvanus Phillips), 1851-1916, Schwetzky, Otto H. L. [from old catalog] · Chicago, Thompson & Thomas · leaf 169
tric current. He also found that the way inwhich the needle turns, whether to the right or the leftof its usual position, depends upon the position of thewire that carries the current—whether it is above orbelow the needle,—and on the direction in which thecurrent flows through the wire. 185.… … Fig. 78. copper wire, one end of which is joined to one pole of abattery of one or two cells. The other end of the wireis then brought into contact with the other pole of thebattery. As soon as the circuit is completed the currentflows through the wire and the needle turns briskly aside.If the…
Electricity · Magnetism
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