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 216
metallic filings conductors back into a non-conductive conditionled to inventions to construct self-restoring imperfect contactdetectors. Branly had discovered that a loose contact formedwith powdered peroxide of lead increased in resistance by theaction of an electric spark. S. G. Brown has more… … Fig. 4. OSCILLATION DETECTORS 99
Radio · Telegraph, Wireless · Telephone, Wireless
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
