-
1 part-time private wire circuit
English-German dictionary of Electrical Engineering and Electronics > part-time private wire circuit
-
2 part-time private wire circuit
Англо-русский словарь промышленной и научной лексики > part-time private wire circuit
-
3 part-time leased circuit
линия, арендуемая на определённое время суток; см. part-time private wire circuitАнгло-русский словарь промышленной и научной лексики > part-time leased circuit
-
4 zeitweise vermietete Leitung
Deutsch-Englisch Wörterbuch der Elektrotechnik und Elektronik > zeitweise vermietete Leitung
-
5 Wheatstone, Sir Charles
SUBJECT AREA: Telecommunications[br]b. 1802 near Gloucester, Englandd. 19 October 1875 Paris, France[br]English physicist, pioneer of electric telegraphy.[br]Wheatstone's family moved to London when he was 4 years old. He was educated at various schools in London and excelled in physics and mathematics. He qualified for a French prize but forfeited it because he was too shy to recite a speech in French at the prize-giving.An uncle, also called Charles Wheatstone, has a musical instrument manufacturing business where young Charles went to work. He was fascinated by the science of music, but did not enjoy business life. After the uncle's death, Charles and his brother William took over the business. Charles developed and patented the concertina, which the firm assembled from parts made by "outworkers". He devoted much of his time to studying the physics of sound and mechanism of sound transmission through solids. He sent speech and music over considerable distances through solid rods and stretched wires, and envisaged communication at a distance. He concluded, however, that electrical methods were more promising.In 1834 Wheatstone was appointed Professor of Experimental Philosophy—a part-time posi-tion—in the new King's College, London, which gave him some research facilities. He conducted experiments with a telegraph system using several miles of wire in the college corridors. Jointly with William Fothergill Cooke, in 1837 he obtained the first patent for a practical electric telegraph, and much of the remainder of his life was devoted to its improvement. In 1843 he gave a paper to the Royal Society surveying the state of electrical measurements and drew attention to a bridge circuit known ever since as the "Wheatstone bridge", although he clearly attributed it to S.H.Christie. Wheatstone devised the "ABC" telegraph, for use on private lines by anyone who could read, and a high-speed automatic telegraph which was adopted by the Post Office and used for many years. He also worked on the French and Belgian telegraph systems; he died when taken ill on a business visit to Paris.[br]Further ReadingB.Bowers, 1975, Sir Charles Wheatstone FRS, London: HMSO.BBBiographical history of technology > Wheatstone, Sir Charles
См. также в других словарях:
Private equity — In finance, private equity is an asset class consisting of equity securities in operating companies that are not publicly traded on a stock exchange. There is a wide array of types and styles of private equity and the term private equity has… … Wikipedia
History of private equity and venture capital — The history of private equity and venture capital and the development of these asset classes has occurred through a series of boom and bust cycles since the middle of the 20th century. Within the broader private equity industry, two distinct sub… … Wikipedia
Early history of private equity — The early history of private equity relates to one of the major periods in the history of private equity and venture capital. Within the broader private equity industry, two distinct sub industries, leveraged buyouts and venture capital… … Wikipedia
Virtual Private LAN Service — (VPLS) is a way to provide Ethernet based multipoint to multipoint communication over IP/MPLS networks. It allows geographically dispersed sites to share an Ethernet broadcast domain by connecting sites through pseudo wires. The technologies that … Wikipedia
DeLorean time machine — A side view of the DeLorean outside Back to the Future: The Ride Plot element from the Back to the Future film series … Wikipedia
Computers and Information Systems — ▪ 2009 Introduction Smartphone: The New Computer. The market for the smartphone in reality a handheld computer for Web browsing, e mail, music, and video that was integrated with a cellular telephone continued to grow in 2008. According to… … Universalium
Germany — /jerr meuh nee/, n. a republic in central Europe: after World War II divided into four zones, British, French, U.S., and Soviet, and in 1949 into East Germany and West Germany; East and West Germany were reunited in 1990. 84,068,216; 137,852 sq.… … Universalium
china — /chuy neuh/, n. 1. a translucent ceramic material, biscuit fired at a high temperature, its glaze fired at a low temperature. 2. any porcelain ware. 3. plates, cups, saucers, etc., collectively. 4. figurines made of porcelain or ceramic material … Universalium
China — /chuy neuh/, n. 1. People s Republic of, a country in E Asia. 1,221,591,778; 3,691,502 sq. mi. (9,560,990 sq. km). Cap.: Beijing. 2. Republic of. Also called Nationalist China. a republic consisting mainly of the island of Taiwan off the SE coast … Universalium
performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical. The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains … Universalium
Charles Wheatstone — Wheatstone, drawn by Samuel Laurence in 1868 Born 6 … Wikipedia
