Elementary treatise on physics, experimental and applied : for the use of colleges and schools (1906)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, Reinold, A. W. (Arnold William), 1843-1921 · New York : Wood · leaf 962
^ invented atelegraph, in which he used the decomposition of water for giving signals.In 1820, at a time when the electromagnet was unknown. Ampere proposedto correspond by means of magnetic needles, above which a current was sent,as many wires and needles being used as letters were required. In… … which under its influence were observed by a telescope. They succeededin thus sending signals from the Observatory to the Physical Cabinet inGottingen, a distance of a mile and a quarter, and to them belongs the honourof having first demonstrated experimentally the possibility of electric…
Physics
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from The Telegrapher [microform] (1864)](https://img.insideoutlibrary.com/img/200/ia-telegrapher04nati-12-6.webp)
