A History of Wireless Telegraphy: Including Some Bare-wire Proposals for Subaqueous TelegraphsBlackwood, 1901 - 348 páginas |
No interior do livro
Resultados 1-5 de 55
Página
... Iron . " Much credit is due to the author for industry in collecting and ability in presenting his facts in an eminently readable form . An attractive subject is on the whole ably and most successfully treated , and we have no ...
... Iron . " Much credit is due to the author for industry in collecting and ability in presenting his facts in an eminently readable form . An attractive subject is on the whole ably and most successfully treated , and we have no ...
Página xi
... iron sheathings will be relegated to the Museum of Antiquities . Then , when a person wants to telegraph to a friend , he knows not where , he will call in an electro - magnetic voice , which will be heard loud by him who has the ...
... iron sheathings will be relegated to the Museum of Antiquities . Then , when a person wants to telegraph to a friend , he knows not where , he will call in an electro - magnetic voice , which will be heard loud by him who has the ...
Página 7
... iron so as to repeat the sound , and so on in unlimited succession . " It is not easy to say from these passages ( which are all we could find on the subject ) what plan Davy had in contemplation . In the first quotation he speaks of ...
... iron so as to repeat the sound , and so on in unlimited succession . " It is not easy to say from these passages ( which are all we could find on the subject ) what plan Davy had in contemplation . In the first quotation he speaks of ...
Página 38
... iron armature , or electro- magnet of the ordinary form , and which would therefore be independent of the Morse patent . Very soon relays con- sisting of movable coils of wire , suspended between the poles of a magnet , were constructed ...
... iron armature , or electro- magnet of the ordinary form , and which would therefore be independent of the Morse patent . Very soon relays con- sisting of movable coils of wire , suspended between the poles of a magnet , were constructed ...
Página 39
... iron rod under the waters of the river Huldee , 4200 feet wide , with batteries and delicate . needle instruments in connection on each bank . Signals were passed , but " it was found that the instruments required the attention of ...
... iron rod under the waters of the river Huldee , 4200 feet wide , with batteries and delicate . needle instruments in connection on each bank . Signals were passed , but " it was found that the instruments required the attention of ...
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...