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 115
l uiuhiinpedosciUations of the hii;h frei|uenoy and energy recjuired in radio-telegraphy. Nevertheless, Duddell had foreseen its application forthis purpose, and specially mentioned it in a Ikitish TatentSpecification, Xo. 21629, of 1900. This suggestion, however, lay dormant, but was revived… … 4. 5 6 7 8 9 10 M CURRENT THROUGH ARC IN AMPERES. Fig. 12.—The numbers on the curves denote the arc length in millimetres. series with a spark gap; the said spark gap being also connectedthrough a high resistance wdth the terminals of a continuouscurrent dynamo. The specification taken alone…
Radio · Telegraph, Wireless · Telephone, Wireless
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
