A History of Electric Telegraphy, to the Year 1837 |
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A History of Electric Telegraphy, to the Year 1837 (1884) John Joseph Fahie No preview available - 2008 |
Common terms and phrases
action alarum alphabet apparatus appears applied arrangement attracted Baron Schilling battery circuit cloth coil communication conducting wire conductor connected constructed contrivance Cooke and Wheatstone copper copper wire correspondence crown 8vo Daniel Schwenter Davy's deflected described disc discovery distance edition Edward Davy effect elec electric current electric telegraph Electrician electro-magnet electrometer employed Engineers excited Exeter Hall exhibited experiments feet galvanic galvanometer glass honour hydrogen inches insulated invention inventor iron Journal keys letter Leyden jar line wires London machine magnetic magnetic needle magnetised means ment mercury metallic Morse Munich negative observed oxydation P. L. SIMMONDS pair paper Paris patent philosophers piece pile placed plates pole positive practical produced Professor Henry proposed Railway return wire Ronalds Royal S. F. B. Morse Salvá says scientific shock signals Society Sömmerring spark tele tion transmitted Treatise tricity tube voltaic voltaic pile zinc
Popular passages
Page 546 - It is no disparagement to the many excellent publications we refer to, to say that in our opinion this little pocket-book of Hurst's is the very best of them all, without any exception.
Page 64 - Spirits, at the same time, are to be fired by a spark sent from side to side through the river without any other conductor than the water ; an experiment which we some time since performed to the amazement of many.
Page 298 - Certain effects of the induction of electrical currents have already been recognised and described : as those of magnetization ; Ampere's experiments of bringing a copper disc near to a flat spiral; his repetition with electromagnets of Arago's extraordinary experiments, and perhaps a few others. Still it appeared unlikely that these could be all the effects which induction by currents could produce; especially as, upon dispensing with iron...
Page 547 - Construction of Roofs — Section V, Construction of Domes and Cupolas — Section VI. Construction of Partitions — Section VII. Scaffolds, Staging, and Gantries— Section VIII. Construction of Centres for Bridges — Section IX. Coffer-dams, Shoring, and Strutting— Section X. Wooden Bridges and Viaducts — Section XI. Joints, Straps, and other Fastenings — Section XII. Timber. Our Factories, Workshops, and Warehouses : their Sanitary and Fire-Resisting Arrangements. By BH THWAITE, Assoc....