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1 revolution transmitter
Морской термин: датчик частоты вращенияУниверсальный англо-русский словарь > revolution transmitter
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2 revolution transmitter
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3 designated revolution transmitter
Морской термин: задатчик частоты вращенияУниверсальный англо-русский словарь > designated revolution transmitter
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4 designated revolution transmitter
English-Russian marine dictionary > designated revolution transmitter
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5 revolution
1. n революцияmanagerial revolution — «революция управляющих»
2. n переворотindustrial revolution — промышленная революция; промышленный переворот
3. n крутая ломка, крутой перелом; революция4. n вращение5. n тех. оборотrevolution counter — счётчик числа оборотов, тахометр
6. n периодическое возвращение; кругооборот; цикл; смена7. n с. -х. севооборот, ротация севооборота8. n уст. размышления, раздумье9. n косм. оборот по орбитеСинонимический ряд:1. change (noun) change; convulsion; reformation; upheaval2. circuit (noun) circuit; circulation; circumvolution; cycle; gyration; gyre; revolve; rotation; round; turn; wheel; whirl3. revolt (noun) anarchy; coup; insurrection; mutiny; overthrow; rebellion; revolt; tumult; uprising4. shake-up (noun) overturn; reorganization; shake-up; turnover5. revolutionize (verb) revolute; revolutionize -
6 program transmitter
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7 nuclear power set point transmitter
English-Russian dictionary on nuclear energy > nuclear power set point transmitter
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8 position transmitter
English-Russian dictionary on nuclear energy > position transmitter
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9 pressure transmitter
реле давления; преобразователь давления; датчик давленияEnglish-Russian dictionary on nuclear energy > pressure transmitter
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10 clockwise revolution
English-Russian big polytechnic dictionary > clockwise revolution
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11 Marrison, Warren Alvin
[br]b. 21 May 1896 Inverary, Canadad. 27 March 1980 Palo Verdes Estates, California, USA[br]Canadian (naturalized American) electrical engineer, pioneer of the quartz clock.[br]Marrison received his high-school education at Kingston Collegiate Institute, Ontario, and in 1914 he entered Queen's University in Kingston. He graduated in Engineering Physics in 1920, his college career having been interrupted by war service in the Royal Flying Corps. During his service in the Flying Corps he worked on radio, and when he returned to Kingston he established his own transmitter. This interest in radio was later to influence his professional life.In 1921 he entered Harvard University, where he obtained an MA, and shortly afterwards he joined the Western Electric Company in New York to work on the recording of sound on film. In 1925 he transferred to Western Electric's Bell Laboratory, where he began what was to become his life's work: the development of frequency standards for radio transmission. In 1922 Cady had used the elastic vibration of a quartz crystal to control the frequency of a valve oscillator, but at that time there was no way of counting and displaying the number of vibrations as the frequency was too high. In 1927 Marrison succeeded in dividing the frequency electronically until it was low enough to drive a synchronous motor. Although his purpose was to determine the frequency accurately by counting the number of vibrations that occurred in a given time, he had incidentally produced the first quartz-crystal -ontrolled clock. The results were sufficiently encouraging for him to build an improved version the following year, specifically as a time and frequency standard.[br]Principal Honours and DistinctionsBritish Horological Institute Gold Medal 1947. Clockmakers' Company Tompion Medal 1955.Bibliography1928, with J.W.Horton, "Precision measurement of frequency", Proceedings of the Institute of Radio Engineers 16:137–54 (provides details of the original quartz clock, although it was not described as such).1930, "The crystal clock", Proceedings of the National Academy of Sciences 16:496–507 (describes the second clock).Further ReadingW.R.Topham, 1989, "Warren A.Marrison—pioneer of the quartz revolution", NAWCC Bulletin 31(2):126–34.J.D.Weaver, 1982, Electrical and Electronic Clocks and Watches, London (a technical assessment of his work on the quartz clock).DV -
12 Popov, Aleksandr Stepanovich
[br]b. 16 March 1859 Bogoslavsky, Zamod, Ural District, Russiad. 13 January 1906 St Petersburg, Russia[br]Russian physicist and electrical engineer acclaimed by the former Soviet Union as the inventor of radio.[br]Popov, the son of a village priest, received his early education in a seminary, but in 1877 he entered the University of St Petersburg to study mathematics. He graduated with distinction in 1883 and joined the faculty to teach mathematics and physics. Then, increasingly interested in electrical engineering, he became an instructor at the Russian Navy Torpedo School at Krondstadt, near St Petersburg, where he later became a professor. On 7 May 1895 he is said to have transmitted and received Morse code radio signals over a distance of 40 m (130 ft) in a demonstration given at St Petersburg University to the Russian Chemical Society, but in a paper published in January 1896 in the Journal of the Russian Physical and Chemical Society, he in fact described the use of a coherer for recording atmospheric disturbances such as lightning, together with the design of a modified coherer intended for reception at a distance of 5 km (3 miles). Subsequently, on 26 November 1897, after Marconi's own radio-transmission experiments had been publicized, he wrote a letter claiming priority for his discovery to the English-language journal Electrician, in the form of a translated précis of his original paper, but neither the original Russian paper nor the English précis made specific claims of either a receiver or a transmitter as such. However, by 1898 he had certainly developed some form of ship-to-shore radio for the Russian Navy. In 1945, long after the Russian revolution, the communist regime supported his claim to be the inventor of radio, but this is a matter for much debate and the priority of Marconi's claim is generally acknowledged outside the USSR.[br]Bibliography1896, Journal of the Russian Physical and Chemical Society (his original paper in Russian).1897, Electrician 40:235 (the English précis).Further ReadingC.Susskind, 1962, "Popov and the beginnings of radio telegraphy", Proceedings of the Institute of Radio Engineers 50:2,036.——1964, Marconi, Popov and the dawn of radiocommunication', Electronics and Power, London: Institution of Electrical Engineers, 10:76.KFBiographical history of technology > Popov, Aleksandr Stepanovich
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