Signalling through space without wires : being a description of the work of Hertz & his successors (1900)
Lodge, Oliver, Sir, 1851-1940, Hertz, Heinrich, 1857-1894 · London : "The Electrician" Printing and Publishing Company, Limited · leaf 121
f circuit Isubstituted for it a water rheostat. The phenomena nowfailed to occur. Replacing the carbon rheostat and puttinga telephone in circuit I adjusted the milliammeter to read2 milliamperes, causing an assistant to evoke the distantspark. All was now clear. At each spark the needle… … 8TATIO INFLUENCE MACHINE / MILL1AMPERE METER 5jj* PULVERIZED ™ CARBON RHEOSTAT TELEPHONE RETURN CIRCUIT
Electric waves · Telegraph, Wireless · Electricity · Wireless Technology
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
