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<p>The problem of telephonic transmission has been dealt with by Heaviside, Pupin, and others, and there is little to add to the mathematical treatment of the problem, but the influence of the terminal apparatus has not, in the author's view, been given sufficient attention. The mathematical considerations are then set forth, and the conclusions to be drawn from the author's reasoning are as follows: In general, whatever influence the line may have in distorting a telephonic wave, when the wave reaches the receiving instrument part of it will be reflected, and will merely dissipate itself on the line, and part will be absorbed and furnish the energy necessary to operate the instrument. Either portion of the wave, however, be it the part reflected or absorbed,
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<br>Subjects: telephony; Telephony</div>
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