A History of Electric Telegraphy, to the Year 1837E. & F. N. Spon, 1884 - 542 ページ |
他の版 - すべて表示
多く使われている語句
action alarum alphabet apparatus appears applied arrangement Baron Schilling battery circuit cloth coil communication conducting wire conductor connected constructed contrivance Cooke and Wheatstone copper copper wire cups Davy's deflected described direction disc discovery distance Edinburgh edition Edward Davy effect elec electric current electric telegraph Electrician electro-magnet employed Engineers Exeter Hall exhibited experiments feet fluid frog galvanic galvanometer glass honour hydrogen inches inductor instrument insulated invention inventor Journal keys letter Leyden jar line wires liquid London machine magnetic magnetic needle magnetised means ment mercury metallic Morse Munich negative observed oxydation oxygen pair paper Paris passing patent piece pile placed plates pole positive practical produced Professor Henry Railway return wire Royal S. F. B. Morse Salvá says scientific shock signals silver Society Sömmerring spark surface suspended tele tion transmitted tricity tube voltaic voltaic pile Wheatstone zinc
人気のある引用
546 ページ - 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.
64 ページ - 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.
298 ページ - 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...
547 ページ - 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....