Results 241 to 250 of about 19,918 (257)
Some of the next articles are maybe not open access.
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
openaire +2 more sources
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
openaire +2 more sources
Journal of the American Institute of Electrical Engineers, 1922
The history of the development of the subject is first outlined, and methods of operation of cables are described. The technical side is introduced with a statement of the various conditions whi h limit operation of cables, and a general method of analysis is developed, based upon an extension of ordinary alternating-current theory.
openaire +2 more sources
The history of the development of the subject is first outlined, and methods of operation of cables are described. The technical side is introduced with a statement of the various conditions whi h limit operation of cables, and a general method of analysis is developed, based upon an extension of ordinary alternating-current theory.
openaire +2 more sources
IEEE Communications Magazine, 1989
The history of telegraphy is presented. Optical telegraphy and other precursors to Samuel Morse's invention are described. Morse's concept and the first experimental line are discussed. The building of the international network is examined, covering capital, the design and installation of outside plant, business competition and technical rivalries ...
openaire +2 more sources
The history of telegraphy is presented. Optical telegraphy and other precursors to Samuel Morse's invention are described. Morse's concept and the first experimental line are discussed. The building of the international network is examined, covering capital, the design and installation of outside plant, business competition and technical rivalries ...
openaire +2 more sources
1891
Die elektrische Telegraphie oder die Fernschreibekunst, von dem griechischen tele — fern — und graphein — schreiben — so genannt, ist ganzlich ein Kind unseres an grossen Entdeckungen und tief in das sociale Leben der Menschheit eingreifenden Erfindungen so reichen Jahrhunderts.
openaire +2 more sources
Die elektrische Telegraphie oder die Fernschreibekunst, von dem griechischen tele — fern — und graphein — schreiben — so genannt, ist ganzlich ein Kind unseres an grossen Entdeckungen und tief in das sociale Leben der Menschheit eingreifenden Erfindungen so reichen Jahrhunderts.
openaire +2 more sources
Transoceanic Submarine Telegraphy
Transactions of the Newcomen Society, 1976The first attempt at operating a submarine telegraph cable, in 1858, failed because its operators tried to increase its speed by using higher working voltages — the cable failed after four weeks of service. However, more successful attempts were made at increasing operating speed, and this article describes some of those ...
openaire +3 more sources
Telegraphy and telephony [PDF]
Journal of the Institution of Electrical Engineers, 1929 openaire +1 more source