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The timeline of North American telegraphy is a chronology of notable events in the history of the electric telegraphy in the United States and Canada, including the rapid spread of telegraphic communications starting from 1844 and completion of the first transcontinental telegraph line in 1861.
The culture of time and space, 1880–1918 (2nd ed. Harvard University Press, 2003). Leonard, Thomas C. "The Conquest of Time, Space, and Political Opponents." Reviews in American History 23#3 (1995), pp. 478–81. online; Müller, Simone M. Wiring the World: The Social and Cultural Creation of Global Telegraph Networks (Columbia University ...
This is an incomplete list of television programs formerly or currently broadcast by History Channel/H2/Military History Channel in the United States. Current programming [ edit ]
George May Phelps (March 19, 1820 – May 18, 1888) was a 19th-century American inventor of automated telegraphy equipment. He is credited with synthesizing the designs of several existing printers into his line of devices [1] which became the dominant apparatus for automated reception and transmission of telegraph messages.
O'Hara, Glen. "New Histories of British Imperial Communication and the 'Networked World' of the 19th and Early 20th Centuries" History Compass (2010) 8#7pp 609–625, Historiography, Richardson, Alan J. "The cost of a telegram: Accounting and the evolution of international regulation of the telegraph." Accounting History 20#4 (2015): 405–429.
Beauchamp, Ken, History of Telegraphy, Institution of Engineering and Technology, 2001 ISBN 978-0-85296-792-8. Bennett, Robert J., Local Business Voice: The History of Chambers of Commerce in Britain, Ireland, and Revolutionary America, 1760-2011, Oxford University Press, 2011 ISBN 0-19-958473-7.
Digital TV can support more than one program in the same channel bandwidth. [131] It is an innovative service that represents the first significant evolution in television technology since color television in the 1950s. [132] Digital TV's roots have been tied very closely to the availability of inexpensive, high-performance computers.
Before the discovery of electromagnetic waves and the development of radio communication, there were many wireless telegraph systems proposed and tested. [4] In April 1872 William Henry Ward received U.S. patent 126,356 for a wireless telegraphy system where he theorized that convection currents in the atmosphere could carry signals like a telegraph wire. [5]