An elementary manual of radiotelegraphy and radiotelephony for students and operators (1916)
Fleming, J. A. (John Ambrose), Sir, 1849-1945 · London, Longmans, Green & co. · leaf 336
ese gaps can be inserted the two ebonite boxes which containfine resistance wires of constantan, against one of which is presseda fine bismuth or iron thermo-junction. To complete the output,we require a single pivot Paul galvanometer, having a resistanceof about 4 or 5 ohms, and reading from zero… … Fig. 14.—Photograph of DampedOscillations, Fig. 15.—Photograph of UndampedOscillations. first step is to calibrate the thermoelectric junction, so as to ascer-tain from the readings of the Paul galvanometer connected to theterminals of the thermo-junction the mean-square value of thecurrent passing…
Radio · Telegraph, Wireless · Telephone, Wireless
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
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