Elementary treatise on physics, experimental and applied : for the use of colleges and schools (1906)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, Reinold, A. W. (Arnold William), 1843-1921 · New York : Wood · leaf 963
the despatch, the line is connected with thepositive pole of a battery, the current passes by the line to the other station,and if there were a second return line, it would traverse it in the oppositedirection to return to the negative pole. In 1837, Steinheil made the veryimportant discovery that… … Fig. 922 other, are connected with large copper plates, which are sunk to some depthin the ground. The action is then the same as if the earth acted as areturn wire. The earth is, indeed, far superior to a return wire ; for theadded resistance of such a wire would be considerable, whereas the…
Physics
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