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1 искажение по долготе
Русско-английский технический словарь > искажение по долготе
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2 искажение по долготе
Русско-английский политехнический словарь > искажение по долготе
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3 погрешность в определении долготы
Русско-английский морской словарь > погрешность в определении долготы
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4 долгота
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5 допуск по долготе
Русско-английский военно-политический словарь > допуск по долготе
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6 погрешность в определении долготы
Русско-английский военно-политический словарь > погрешность в определении долготы
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7 поправка по долготе
Русско-английский военно-политический словарь > поправка по долготе
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8 шкала долготы
Русско-английский военно-политический словарь > шкала долготы
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9 искажение
aberration, cobble, contortion, deformation, distortion, error, ( информации) garbling, impairment* * *искаже́ние с.
distortionбез искаже́ния — undistorted, of true (e. g., shape, size, etc.)корректи́ровать искаже́ние — compensate for distortionамплиту́дное искаже́ние — amplitude distortionамплиту́дно-часто́тное искаже́ние — amplitude-(versus-)frequency distortionаперту́рное искаже́ние тлв. — aperture distortionкорректи́ровать аперту́рное искаже́ние — apply [introduce] aperture compensation(рабо́тать) без корре́кции аперту́рных искаже́ний — (operate) without aperture compensation [with uncompensated aperture distortion]бочкообра́зное искаже́ние ( изображения или растра) тлв. — barrel distortionискаже́ние второ́го ро́да — phase distortionгармони́ческое искаже́ние — harmonic distortionгеометри́ческое искаже́ние — geometric distortionдопусти́мое искаже́ние — tolerable distortionискаже́ние за релье́ф геод. — deformation due to reliefискаже́ние зву́ка в результа́те перегру́зки усили́теля или громкоговори́теля — blastingискаже́ние изображе́ния — image [picture] distortionискаже́ние и́мпульса — pulse distortionискаже́ние и́мпульсов набо́ра тлф. — dialing distortionискаже́ние ка́дра тлв. — frame distortionискаже́ние квантова́ния — quantization distortionискаже́ние ко́довой посы́лки — code garblingкраево́е искаже́ние тлф. — arrival curve distortionлине́йное искаже́ние — linear distortionискаже́ние ли́ний изображе́ния ( в фототелеграфе) — raggedness in the received copyискаже́ние масшта́ба картогр. — distortion in scaleмодуляцио́нное искаже́ние — modulation distortionискаже́ние направле́ний картогр. — direction alteration, direction deformation, direction distortionнелине́йное искаже́ние — non-linear distortionискаже́ние от запа́здывания — delay distortionискаже́ние пе́рвого ро́да — amplitude distortionперекрё́стные искаже́ния1. тлв. cross-colour2. радио intermodulation [IM] distortionsперехо́дное искаже́ние — transient distortionискаже́ние площаде́й картогр. — area alteration, area deformation, area distortionискаже́ние по долготе́ картогр. — error in longitude, longitude [longitudinal] errorподушкообра́зное искаже́ние ( изображения или растра) тлв. — pin-cushion distortionискаже́ние по́ля — field distortionискаже́ние по широте́ картогр. — error in latitude, latitude errorискаже́ние при переда́че — sending-end [transmitter] distortionпростра́нственное искаже́ние — spatial distortionискаже́ние про́филя — shape distortionискаже́ние пятна́ — spot distortionискаже́ние расстоя́ний картогр. — distance alteration, distance deformation, distance distortionискаже́ние ра́стра тлв. — raster distortionрегуля́рное искаже́ние ( разновидность краевого искажения телеграфных посылок) — bias distortionрегуля́рное, амплиту́дное искаже́ние — amplitude bias distortionрегуля́рное, временно́е искаже́ние — time bias distortionв результа́те временно́го регуля́рного искаже́ния все то́ковые посы́лки преоблада́ют по дли́тельности над бесто́ковыми — time bias distortion lengthens all mark pulses alike and shortens all space pulses alikeискаже́ние решё́тки ( кристалла) — lattice distortionслуча́йное искаже́ние ( разновидность краевого искажения телеграфных посылок) — fortuitous distortionстро́чное искаже́ние тлв. — line [horizontal] distortionтрапецеида́льное искаже́ние ( изображения или растра) — keystone distortionискаже́ние тре́тьего поря́дка — third-order distortionискаже́ние угло́в картогр. — angular alteration, angular deformation, angular distortionуглово́е искаже́ние — angular distortionфа́зовое искаже́ние — phase(-frequency) distortionфазочасто́тное искаже́ние — phase(-frequency) distortionискаже́ние фо́рмы — distortion, deformationискаже́ние фо́рмы изображе́ния тлв. — picture-shape distortionискаже́ние фо́рмы и́мпульсов — pulse-shape distortionискаже́ние фо́рмы сигна́ла — signal waveform distortionхарактеристи́ческое искаже́ние ( разновидность краевого искажения телеграфных посылок) — characteristic distortionчасто́тное искаже́ние — frequency distortion* * * -
10 определит долготу
1. reckon a longitude2. reckoning a longitudeАвиация и космонавтика. Русско-английский словарь > определит долготу
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11 отсчитывать долготу
1. reckon a longitude2. reckoning a longitudeАвиация и космонавтика. Русско-английский словарь > отсчитывать долготу
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12 градусы долготы
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13 приведенная долгота
Русско-английский военно-политический словарь > приведенная долгота
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14 счислимая долгота
Русско-английский военно-политический словарь > счислимая долгота
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15 указатель широты и долготы
Русско-английский военно-политический словарь > указатель широты и долготы
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16 приведенная долгота
Авиация и космонавтика. Русско-английский словарь > приведенная долгота
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17 ошибка в определении долготы
Cartography: error in longitude, longitudinal errorУниверсальный русско-английский словарь > ошибка в определении долготы
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18 ошибка по долготе
1) Engineering: longitudinal error2) Cartography: error in longitude -
19 погрешность в определении долготы
Naval: error in longitudeУниверсальный русско-английский словарь > погрешность в определении долготы
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20 Harrison, John
[br]b. 24 March 1693 Foulby, Yorkshire, Englandd. 24 March 1776 London, England[br]English horologist who constructed the first timekeeper of sufficient accuracy to determine longitude at sea and invented the gridiron pendulum for temperature compensation.[br]John Harrison was the son of a carpenter and was brought up to that trade. He was largely self-taught and learned mechanics from a copy of Nicholas Saunderson's lectures that had been lent to him. With the assistance of his younger brother, James, he built a series of unconventional clocks, mainly of wood. He was always concerned to reduce friction, without using oil, and this influenced the design of his "grasshopper" escapement. He also invented the "gridiron" compensation pendulum, which depended on the differential expansion of brass and steel. The excellent performance of his regulator clocks, which incorporated these devices, convinced him that they could also be used in a sea dock to compete for the longitude prize. In 1714 the Government had offered a prize of £20,000 for a method of determining longitude at sea to within half a degree after a voyage to the West Indies. In theory the longitude could be found by carrying an accurate timepiece that would indicate the time at a known longitude, but the requirements of the Act were very exacting. The timepiece would have to have a cumulative error of no more than two minutes after a voyage lasting six weeks.In 1730 Harrison went to London with his proposal for a sea clock, supported by examples of his grasshopper escapement and his gridiron pendulum. His proposal received sufficient encouragement and financial support, from George Graham and others, to enable him to return to Barrow and construct his first sea clock, which he completed five years later. This was a large and complicated machine that was made out of brass but retained the wooden wheelwork and the grasshopper escapement of the regulator clocks. The two balances were interlinked to counteract the rolling of the vessel and were controlled by helical springs operating in tension. It was the first timepiece with a balance to have temperature compensation. The effect of temperature change on the timekeeping of a balance is more pronounced than it is for a pendulum, as two effects are involved: the change in the size of the balance; and the change in the elasticity of the balance spring. Harrison compensated for both effects by using a gridiron arrangement to alter the tension in the springs. This timekeeper performed creditably when it was tested on a voyage to Lisbon, and the Board of Longitude agreed to finance improved models. Harrison's second timekeeper dispensed with the use of wood and had the added refinement of a remontoire, but even before it was tested he had embarked on a third machine. The balance of this machine was controlled by a spiral spring whose effective length was altered by a bimetallic strip to compensate for changes in temperature. In 1753 Harrison commissioned a London watchmaker, John Jefferys, to make a watch for his own personal use, with a similar form of temperature compensation and a modified verge escapement that was intended to compensate for the lack of isochronism of the balance spring. The time-keeping of this watch was surprisingly good and Harrison proceeded to build a larger and more sophisticated version, with a remontoire. This timekeeper was completed in 1759 and its performance was so remarkable that Harrison decided to enter it for the longitude prize in place of his third machine. It was tested on two voyages to the West Indies and on both occasions it met the requirements of the Act, but the Board of Longitude withheld half the prize money until they had proof that the timekeeper could be duplicated. Copies were made by Harrison and by Larcum Kendall, but the Board still continued to prevaricate and Harrison received the full amount of the prize in 1773 only after George III had intervened on his behalf.Although Harrison had shown that it was possible to construct a timepiece of sufficient accuracy to determine longitude at sea, his solution was too complex and costly to be produced in quantity. It had, for example, taken Larcum Kendall two years to produce his copy of Harrison's fourth timekeeper, but Harrison had overcome the psychological barrier and opened the door for others to produce chronometers in quantity at an affordable price. This was achieved before the end of the century by Arnold and Earnshaw, but they used an entirely different design that owed more to Le Roy than it did to Harrison and which only retained Harrison's maintaining power.[br]Principal Honours and DistinctionsRoyal Society Copley Medal 1749.Bibliography1767, The Principles of Mr Harrison's Time-keeper, with Plates of the Same, London. 1767, Remarks on a Pamphlet Lately Published by the Rev. Mr Maskelyne Under theAuthority of the Board of Longitude, London.1775, A Description Concerning Such Mechanisms as Will Afford a Nice or True Mensuration of Time, London.Further ReadingR.T.Gould, 1923, The Marine Chronometer: Its History and Development, London; reprinted 1960, Holland Press.—1978, John Harrison and His Timekeepers, 4th edn, London: National Maritime Museum.H.Quill, 1966, John Harrison, the Man who Found Longitude, London. A.G.Randall, 1989, "The technology of John Harrison's portable timekeepers", Antiquarian Horology 18:145–60, 261–77.J.Betts, 1993, John Harrison London (a good short account of Harrison's work). S.Smiles, 1905, Men of Invention and Industry; London: John Murray, Chapter III. Dictionary of National Biography, Vol. IX, pp. 35–6.DV
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