Results 281 to 290 of about 20,548 (312)
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The Digital Body: Telegraphy as Discourse Network
, 2015This article considers the use of flag telegraphy by the US Signal Corps during the Civil War as it functioned as a proto-technical medium that preceded wire telegraphy as a military communications technology.
K. Maddalena, J. Packer
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Buying time: futures trading and telegraphy in nineteenth-century global commodity markets*
Journal of Global History, 2015Adapting the dictum that ‘time is money’, Western merchants have long promoted and welcomed technologies to accelerate commerce. Thanks to revolutionary changes in communication in the nineteenth century, including the telegraph, information could for ...
Alexander Engel
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Nineteenth-Century Telegraphy: Wiring the Emerging Urban Corporate Economy
, 2016Nineteenth-century telegraphy had a vital integrative role in the intersecting and mutually constituted developments of American industrialization, urbanization, and mediatization.
G. Sussman
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From Data to News: Weather Reporting, Telegraphy and the Press in Colonial Australia
, 2015This article examines the role of telegraphy and newspapers in the provision of weather news during the late nineteenth century. In order to trace the transformation from data to news, the discussion begins by documenting the formation of both technical ...
Denis. Cryle
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1999
James Clerk Maxwell’s discovery of electromagnetic waves was proven experimentally by Heinrich Hertz. From then on here were numerous attempts to use electromagnetic waves for communications. A young Italian, Guglielmo Marconi, arrived in Britain and worked with the Post Office to gradually extend the radius within which radiation can be detected to ...
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James Clerk Maxwell’s discovery of electromagnetic waves was proven experimentally by Heinrich Hertz. From then on here were numerous attempts to use electromagnetic waves for communications. A young Italian, Guglielmo Marconi, arrived in Britain and worked with the Post Office to gradually extend the radius within which radiation can be detected to ...
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Carrier Current Telephony and Telegraphy
Transactions of the American Institute of Electrical EngineersThis paper briefly outlines first the history of the development of carrier multiplex telegraphy and telephony. The fundamental principles underlying particularly the newer developments of the art are then discussed.
E. H. Colpitts, O. B. Blackwell
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Multiplex telephony and telegraphy by means of electric waves guided by wires
Proceedings of the American Institute of Electrical EngineersElectrical transmission of intelligence, so vital to the progress of civilization, has taken a development at present into telephony and telegraphy over metallic wires; and telegraphy, and, to a limited extent, telephony, through the medium of the ether ...
George D. Squier
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Industrial Archaeology Review, 2013
AbstractThis paper surveys the emergence of the era of electrical communications, from its beginnings in the 1830s through to the end of analogue technology. The electric telegraph soon became an essential and visible business tool with its network of poles and wires, but it is argued that, as each system was supplanted by the next, the evidence of its
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AbstractThis paper surveys the emergence of the era of electrical communications, from its beginnings in the 1830s through to the end of analogue technology. The electric telegraph soon became an essential and visible business tool with its network of poles and wires, but it is argued that, as each system was supplanted by the next, the evidence of its
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Transactions of the American Institute of Electrical Engineers, 1944
This paper on ``Telegraphy in the Bell System'' is a companion paper for the one prepared by the representatives of the Western Union Telegraph Company on ``American Telegraphy After 100 Years'' and the one by representatives of the International Telephone and Telegraph Company on ``Developments in the Field of Cable and Radiotelegraph Communications.''
J. A. Duncan, R. E. Pierce, R. D. Parker
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This paper on ``Telegraphy in the Bell System'' is a companion paper for the one prepared by the representatives of the Western Union Telegraph Company on ``American Telegraphy After 100 Years'' and the one by representatives of the International Telephone and Telegraph Company on ``Developments in the Field of Cable and Radiotelegraph Communications.''
J. A. Duncan, R. E. Pierce, R. D. Parker
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