American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 182
en, with the wire cut through at b and open at c, we find a total insulation resistance of 600,- 000 ohms, we know that the latter must be the joint resistance of both sections, namely, R, ?. Having, then, this data, and knowing the formula for obtaining the joint resist- rX rance x, of two… … i8Xr i8+r=^It only remains to calculate from this the value of r. We can now clear the above equation of fractions if we multiply the right handterm, that is 6, by the divisor of the left hand term, and then we shall have, withouthaving altered the value of the equation, Xr=io8+6 rr =108+ 6 r…
Telegraph
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