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1 communication control module
Electrical engineering: CCMУниверсальный русско-английский словарь > communication control module
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2 power-frequency communication
Electrical engineering: PFCУниверсальный русско-английский словарь > power-frequency communication
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3 substation communication unit
Electrical engineering: SCUУниверсальный русско-английский словарь > substation communication unit
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4 elektriksel iletişim
electrical communication -
5 электрическая связь
1) Engineering: electric coupling, electrical communication2) Automobile industry: electric connection3) Information technology: electrical trace (на печатной плате)4) Network technologies: coupling5) General subject: continuity6) Electrical engineering: electric coupleУниверсальный русско-английский словарь > электрическая связь
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6 sähköviestintä
• electric communication• electrical communication• electronic communication -
7 Chappe, Claude
SUBJECT AREA: Telecommunications[br]b. 25 December 1763 Brulon, Franced. 23 January 1805 Paris, France[br]French engineer who invented the semaphore visual telegraph.[br]Chappe began his studies at the Collège de Joyeuse, Rouen, and completed them at La Flèche. He was educated for the church with the intention of becoming an Abbé Commendataire, but this title did not in fact require him to perform any religious duties. He became interested in natural science and amongst other activities he carried out experiments with electrically charged soap bubbles.When the bénéfice was suppressed in 1781 he returned home and began to devise a system of telegraphic communication. With the help of his three brothers, particularly Abraham, and using an old idea, in 1790 he made a visual telegraph with suspended pendulums to relay coded messages over a distance of half a kilometre. Despite public suspicion and opposition, he presented the idea to the Assemblée Nationale on 22 May 1792. No doubt due to the influence of his brother, Ignace, a member of the Assemblée Nationale, the idea was favourably received, and on 1 April 1793 it was referred to the National Convention as being of military importance. As a result, Chappe was given the title of Telegraphy Engineer and commissioned to construct a semaphore (Gk. bearing a sign) link between Paris and Lille, a distance of some 240 km (150 miles), using twenty-two towers. Each station contained two telescopes for observing the adjacent towers, and each semaphore consisted of a central beam supporting two arms, whose positions gave nearly two hundred possible arrangements. Hence, by using a code book as a form of lookup table, Chappe was able to devise a code of over 8,000 words. The success of the system for communication during subsequent military conflicts resulted in him being commissioned to extend it with further links, a work that was continued by his brothers after his suicide during a period of illness and depression. Providing as it did an effective message speed of several thousand kilometres per hour, the system remained in use until the mid-nineteenth century, by which time the electric telegraph had become well established.[br]Further ReadingR.Appleyard, 1930, Pioneers of Electrical Communication.International Telecommunications Union, 1965, From Semaphore to Satellite, Geneva.See also: Morse, Samuel Finley BreezeKF -
8 электросвязь
1) Military: telecommunications2) Engineering: telecom3) Radio: telecommunications4) Telecommunications: electric communication, (дальняя) telecommunication5) Mass media: telecommunications6) Business: telecommunication7) Household appliances: electrical communication8) Cables: electric communications -
9 електрозв'язок
чelectric communication, telecommunication, telecommunications, electrical communication -
10 теория электрической связи
образ. theory of electric communication, electrical communication theoryДополнительный универсальный русско-английский словарь > теория электрической связи
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11 электросвязь
electric communication, telecommunication, electrical communicationРусско-английский научно-технический словарь Масловского > электросвязь
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12 реальный
•Let us see how this is related to actual experimental conditions.
•A discussion of major forms of actual electrical communication systems...
Русско-английский научно-технический словарь переводчика > реальный
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13 Государственный Контроль Электрической Связи
General subject: state electrical communication inspectionУниверсальный русско-английский словарь > Государственный Контроль Электрической Связи
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14 государственная инспекция электро-коммуникаций
General subject: state electrical communication inspectionУниверсальный русско-английский словарь > государственная инспекция электро-коммуникаций
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15 elektrisk kommunikasjon
subst. electrical communication -
16 электросвязь
Russian-English dictionary of telecommunications > электросвязь
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17 электросвязь
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18 Hertz, Heinrich Rudolph
[br]b. 22 February 1857 Hamburg, Germanyd. 1 January 1894 Bonn, Germany[br]German physicist who was reputedly the first person to transmit and receive radio waves.[br]At the age of 17 Hertz entered the Gelehrtenschule of the Johaneums in Hamburg, but he left the following year to obtain practical experience for a year with a firm of engineers in Frankfurt am Main. He then spent six months at the Dresden Technical High School, followed by year of military service in Berlin. At this point he decided to switch from engineering to physics, and after a year in Munich he studied physics under Helmholtz at the University of Berlin, gaining his PhD with high honours in 1880. From 1883 to 1885 he was a privat-dozent at Kiel, during which time he studied the electromagnetic theory of James Clerk Maxwell. In 1885 he succeeded to the Chair in Physics at Karlsruhe Technical High School. There, in 1887, he constructed a rudimentary transmitter consisting of two 30 cm (12 in.) rods with metal balls separated by a 7.5 mm (0.3 in.) gap at the inner ends and metallic plates at the outer ends, the whole assembly being mounted at the focus of a large parabolic metal mirror and the two rods being connected to an induction coil. At the other side of his laboratory he placed a 70 cm (27½ in.) diameter wire loop with a similar air gap at the focus of a second metal mirror. When the induction coil was made to create a spark across the transmitter air gap, he found that a spark also occurred at the "receiver". By a series of experiments he was not only able to show that the invisible waves travelled in straight lines and were reflected by the parabolic mirrors, but also that the vibrations could be refracted like visible light and had a similar wavelength. By this first transmission and reception of radio waves he thus confirmed the theoretical predictions made by Maxwell some twenty years earlier. It was probably in his experiments with this apparatus in 1887 that Hertz also observed that the voltage at which a spark was able to jump a gap was significantly reduced by the presence of ultraviolet light. This so-called photoelectric effect was subsequently placed on a theoretical basis by Albert Einstein in 1905. In 1889 he became Professor of Physics at the University of Bonn, where he continued to investigate the nature of electric discharges in gases at low pressure until his death after a long and painful illness. In recognition of his measurement of radio and other waves, the international unit of frequency of an oscillatory wave, the cycle per second, is now universally known as the Hertz.[br]Principal Honours and DistinctionsRoyal Society Rumford Medal 1890.BibliographyMuch of Hertz's work, including his 1890 paper "On the fundamental equations of electrodynamics for bodies at rest", is recorded in three collections of his papers which are available in English translations by D.E.Jones et al., namely Electric Waves (1893), Miscellaneous Papers (1896) and Principles of Mechanics (1899).Further ReadingJ.G.O'Hara and W.Pricha, 1987, Hertz and the Maxwellians, London: Peter Peregrinus. J.Hertz, 1977, Heinrich Hertz, Memoirs, Letters and Diaries, San Francisco: San Francisco Press.R.Appleyard, 1930, Pioneers of Electrical Communication.See also: Heaviside, OliverKFBiographical history of technology > Hertz, Heinrich Rudolph
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19 Международный стандарт связи на подстанциях IEC 61850
Electrical engineering: IEC 61850 (International Substation Communication Standard)Универсальный русско-английский словарь > Международный стандарт связи на подстанциях IEC 61850
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20 материалы для передачи данных
Electrical engineering: communication materials (Special thanks to Anthony Yurrrr)Универсальный русско-английский словарь > материалы для передачи данных
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