A History of Wireless Telegraphy: Including Some Bare-wire Proposals for Subaqueous TelegraphsBlackwood, 1901 - 348 páginas |
No interior do livro
Resultados 1-5 de 51
Página xiv
... yards of wire at each end suffice for one mile of space , or , to put it accurately , where the height of the vertical wires ( in yards ) varies as the square root of the distance ( in miles ) to be signalled over . At the outset of my ...
... yards of wire at each end suffice for one mile of space , or , to put it accurately , where the height of the vertical wires ( in yards ) varies as the square root of the distance ( in miles ) to be signalled over . At the outset of my ...
Página 28
... yards wide.2 1 In this , I think , his memory betrays him . Bain's experiments had to do with an insulated wire in connection with earth - batteries . See The Artisan , ' June 30 , 1843 , p . 147 . 2 These experiments were also noticed ...
... yards wide.2 1 In this , I think , his memory betrays him . Bain's experiments had to do with an insulated wire in connection with earth - batteries . See The Artisan , ' June 30 , 1843 , p . 147 . 2 These experiments were also noticed ...
Página 40
... yards - apart , will transmit electric currents to considerable distances ( two to three miles ) suf- ficiently powerful for signalling with needle instruments . " E. AND H. HIGHTON — 1852-72 . The brothers Edward and Henry Highton ...
... yards - apart , will transmit electric currents to considerable distances ( two to three miles ) suf- ficiently powerful for signalling with needle instruments . " E. AND H. HIGHTON — 1852-72 . The brothers Edward and Henry Highton ...
Página 56
... yards apart , and , although he used a very sensitive reflecting galvano- meter , and twelve cells of Grove's nitric acid battery , he could not get any signals , although the experiments were varied in every conceivable way . " Under ...
... yards apart , and , although he used a very sensitive reflecting galvano- meter , and twelve cells of Grove's nitric acid battery , he could not get any signals , although the experiments were varied in every conceivable way . " Under ...
Página 62
... yards apart . " The apparatus at each station consisted of a plate of copper and a plate of zinc , connected to a flat secondary coil containing nearly a mile of No. 35 copper wire . The secondary coil was placed immediately behind the ...
... yards apart . " The apparatus at each station consisted of a plate of copper and a plate of zinc , connected to a flat secondary coil containing nearly a mile of No. 35 copper wire . The secondary coil was placed immediately behind the ...
Outras edições - Ver tudo
A History of Wireless Telegraphy, 1838-1899: Including Some Bare-wire ... John Joseph Fahie Visualização integral - 1899 |
A History of Wireless Telegraphy, 1838-1899: Including Some Bare-wire ... John Joseph Fahie Visualização integral - 1900 |
A History of Wireless Telegraphy, 1838-1899: Including Some Bare-wire ... John Joseph Fahie Visualização integral - 1900 |
Palavras e frases frequentes
apparatus arrangement battery cable cells centimetres Cheap Edition circuit communication condenser conducting conductor connected copper wire Crown 8vo Daniell cell Demy 8vo detector diameter discharge distance disturbance Dundee earth effect Elec electric waves electrical oscillations Electrician electro-magnetic employed ether ethereal waves exciter experiments Fcap feet filings Flat Holm galvanometer gutta-percha Hertz Hertzian waves Illustrations inch increase induction coil iron Leclanché cells length Leyden jar light lighthouse Lindsay magnetic Marconi means ments messages metallic method metres microphone miles Morse Muckle Flugga needle obtained ohms ordinary paper parallel pass patent plates poles Portraits possible Post 8vo practical produced Prof Professor receiving instrument reflector relay resistance Scotland Second Edition secondary sending sensitive tube ship shore shown signals space spark-gap sparks station surface telegraph telephone terminals tion transmitting trembler tricity vertical wire vibrations Willoughby Smith wire wireless telegraphy yards
Passagens conhecidas
Página 20 - MATHESON. Can the Old Faith Live with the New ? or, The Problem of Evolution and Revelation. By the Rev.
Página 24 - NICHOLSON. Thoth. A Romance. By JOSEPH SHIELD NICHOLSON, MA, D.Sc., Professor of Commercial and Political Economy and Mercantile Law in the University of Edinburgh. Third Edition. Crown 8vo, 4s.
Página 25 - Katie Stewart. Illustrated boards, 2s. 6d. Valentine and his Brother. New Edition. Crown 8vo, 3s. 6d. Sons and Daughters. Crown 8vo, 3s. 6d.
Página 11 - FERRIER. Philosophical Works of the late James F. Ferrier, BA Oxon., Professor of Moral Philosophy and Political Economy, St Andrews. New Edition. Edited by Sir ALEXANDER GRANT, Bart., DCL, and Professor LUSHINGTON. 3 vols.
Página 14 - HAMILTON. Lectures on Metaphysics. By Sir WILLIAM HAMILTON, Bart. , Professor of Logic and Metaphysics in the University of Edinburgh. Edited by the Rev. HL MANSEL, BD, LL.D., Dean of St Paul's ; and JOHN VEITCH, MA, Professor of Logic and Rhetoric, Glasgow.
Página 24 - OLIPHANT. 3 vols. post 8vo, 25s. 6d. Scientific Religion ; or, Higher Possibilities of Life and Practice through the Operation of Natural Forces.
Página 17 - Post 8vo, 7s. 6d. The Highlands of Scotland in 1750. From Manuscript 104 in the King's Library, British Museum. With an Introduction by ANDREW LANG.
Página 15 - HAY. The Works of the Right Rev. Dr George Hay, Bishop of Edinburgh. Edited under the Supervision of the Bight Rev.
Página 23 - Cessios, and Sequestrations; and the Winding-up of Joint-Stock Companies in Scotland; with Annotations on the various Insolvency and Bankruptcy Statutes; and with Forms of Procedure applicable to these Subjects. By JAMES MURDOCH, Member of the...
Página 6 - Second Edition. Crown 8vo, with numerous Illustrations, 7s. 6d. Cultivated Plants : Their Propagation and Improvement. Including Natural and Artificial Hybridisation, Raising from Seed, Cuttings, and Layers, Grafting and Budding, as applied to the Families and Genera in Cultivation. Crown...