optical fibre
optical fibre Fine strand of glass, less than 1mm (0.04in) thick, that is able to transmit digital information in the form of pulses of light. More data can be transmitted (up to 10 billion bits of information a second) and there is less interference. Such transmission is possible because light entering an optical fibre is conducted, by reflection, from one end of the fibre to the other with very little loss of intensity. Initially used in
endoscopes that examine the interior of the body, their application is spreading to many forms of mass communication.
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James FitzJames Berwick, duke of
Book article from: The Columbia Encyclopedia, Sixth Edition
James FitzJames Berwick, duke of , 1670-1734, marshal of France; illegitimate son of King James II of England and Arabella Churchill...throne in 1685, created him duke of Berwick. When his father was dethroned (1688...
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Berwick, James FitzJames, 1st duke of
Book article from: The Oxford Companion to British History
Berwick, James FitzJames, 1st duke of (1670–1734). Berwick spent almost all his life abroad in foreign military service. He was a natural son of James, duke of York, by Arabella Churchill, sister of...
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