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 74
aa c3XI 0e3 o> oo o3 a o Xbo D oX 3 -t-> o3 a,g 03 -OCO d 08 Hi O Ph o Ph 5q Ph S3 O 03,0 O o Qj 03 n-, 02 Ph to ca- tsEn 66 SIGNALLING WITHOUT WIRES. A Morseinstrument is to be connected to the terminals M,and either it or the bell can be switched into the circuit atpleasure. The form of…
Electric waves · Telegraph, Wireless · Electricity · Wireless Technology
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten10unit-191-148.webp)
