American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 146
g I, tangent 2 represents a space on the line from i, equal to that which 1 rep-resents from oto I, and so on. These divisions are assumed to be divided again into100 or 1000 parts. Thus, by reference to the table it is found that the tangent of 20°is 0.364, that is, {^-^^ of i. These tables are… … W. U, TANGENT GALVANOME-IER. 112 AMERICAN TELEGRAPHY table of tangents it is found that tlie tangent of 20° is 0=364 and the tangent of 36*^,0.728. As the currents in question are proportional to these tangents it is evidentthat the last curient has twice the strength of the first, since c.364 is…
Telegraph
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