American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 325
cable are placed directly in the earth it is foundthat, so-called, earth currents; of sufficient strength to operate the sensitive receiving in-struments used on such cables, are almost always observable. At least two causes havebeen assigned to explain these currents. One is that they are due to a… … CABLE TERMINAL CONNECTIONS—SIMPLEX WORKING. which in rising and falling/ cut the conductor of the cable. Probably thesecurrents are due to both causes, but for the present purpose it will suffice to considerthem as only due to the former cause. Ordinarily, these earth currents are neither very…
Telegraph
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