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1 astronomical quantities
Макаров: астрономические величиныУниверсальный англо-русский словарь > astronomical quantities
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2 astronomical quantities
English-russian dictionary of physics > astronomical quantities
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3 астрономические величины
Русско-английский физический словарь > астрономические величины
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4 quantity
1.количество 2.величина@quantity of illuminationколичество освещения@astronomical quantitiesастрономические величины@harmonic quantityгармоническая величина@photometric quantityфотометрическая величина@solar quantities1.солнечные величины 2.солнечные единицы@variable quantityпеременная величина@ -
5 величина
1.quantity 2.size 3.valueастрономические величиныastronomical quantitiesгармоническая величинаharmonic quantityвеличина звездная критическая величинаcritical valueотрицательная величинаnegativeпеременная величинаvariable quantityсолнечные величиныsolar quantitiesфотометрическая величинаphotometric quantity -
6 астрономические величины
Makarov: astronomical quantitiesУниверсальный русско-английский словарь > астрономические величины
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7 Alleyne, Sir John Gay Newton
SUBJECT AREA: Metallurgy[br]b. 8 September 1820 Barbadosd. 20 February 1912 Falmouth, Cornwall, England[br]English iron and steel manufacturer, inventor of the reversing rolling mill.[br]Alleyne was the heir to a baronetcy created in 1769, which he succeeded to on the death of his father in 1870. He was educated at Harrow and at Bonn University, and from 1843 to 1851 he was Warden at Dulwich College, to the founder of which the family claimed to be related.Alleyne's business career began with a short spell in the sugar industry at Barbados, but he returned to England to enter Butterley Iron Works Company, where he remained for many years. He was at first concerned with the production of rolled-iron girders for floors, especially for fireproof flooring, and deck beams for iron ships. The demand for large sections exceeded the capacity of the small mills then in use at Butterley, so Alleyne introduced the welding of T-sections to form the required H-sections.In 1861 Alleyne patented a mechanical traverser for moving ingots in front of and behind a rolling mill, enabling one person to manipulate large pieces. In 1870 he introduced his major innovation, the two-high reversing mill, which enabled the metal to be passed back and forth between the rolls until it assumed the required size and shape. The mill had two steam engines, which supplied the motion in opposite directions. These two inventions produced considerable economies in time and effort in handling the metal and enabled much heavier pieces to be processed.During Alleyne's regime, the Butterley Company secured some notable contracts, such as the roof of St Paneras Station, London, in 1868, with the then-unparalleled span of 240 ft (73 m). The manufacture and erection of this awe-inspiring structure was a tribute to Alleyne's abilities. In 1872 he masterminded the design and construction of the large railway bridge over the Old Maas at Dordrecht, Holland. Alleyne also devised a method of determining small quantities of phosphorus in iron and steel by means of the spectroscope. In his spare time he was a skilled astronomical observer and metalworker in his private workshop.[br]Bibliography1875, "The estimation of small quantities of phosphorus in iron and steel by spectrum analysis", Journal of the Iron and Steel Institute: 62.Further ReadingObituary, 1912, Journal of the Iron and Steel Institute: 406–8.LRDBiographical history of technology > Alleyne, Sir John Gay Newton
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8 единица
( натуральное число) unit, unity* * *едини́ца ж.1. ( измерения) unit2. ( число) unity, oneв едини́цах — in unitsв [на] едини́цу — per unitна едини́цу бо́льше или ме́ньше — greater or less by oneпринима́ть за едини́цу — take as a unitабсолю́тная едини́ца — absolute unitедини́ца акти́вности — activity unitакусти́ческая едини́ца — acoustical unitастрономи́ческая едини́ца — astronomical unitа́томная едини́ца — atomic unitа́томная едини́ца ма́ссы — atomic mass unit, AMUбезразме́рная едини́ца — dimensionless unitбонитиро́вочная едини́ца — evaluation unitвнесисте́мная едини́ца — off-system [arbitrary] unitедини́ца вы́зова — unit callдвои́чная едини́ца ( в теории информации) — binary unitедини́ца до́зы, энергети́ческая — energy doseдо́льные едини́цы — submultiple unitsедини́ца до́пуска — tolerance unitедини́ца измере́ния — unit of measurementедини́ца интенси́вности нагру́зки ( в теории массового обслуживания) — unit of traffic intensityедини́ца информа́ции — unit of information, information unitедини́ца информа́ции, двои́чная — bitедини́ца информа́ции, десяти́чная — the Hartleyедини́ца информа́ции, натура́льная — natural unit (of information)едини́ца информа́ции, энтропи́ческая — entropy unit (of information)кормова́я едини́ца — feed [fodder] unitкра́тные едини́цы — multiple unitsмагни́тные едини́цы — magnetic unitsедини́ца ма́ссы — mass unit, unit of massмаши́нная едини́ца — machine unitмеждунаро́дные едини́цы — international unitsметри́ческие едини́цы — metric unitsмехани́ческие едини́цы — mechanical unitsмни́мая едини́ца — imaginary unitмоне́тная едини́ца — monetary unitедини́ца мо́щности — power unitнекогере́нтная едини́ца — noncoherent unitнорми́рованная едини́ца — normalized [reduced] unitедини́ца объё́ма — volume unitосновны́е едини́цы — fundamental [basic] unitsотноси́тельная едини́ца — relative unitедини́ца перехо́дных поме́х свз. — crosstalk unitедини́ца пло́щади — unit of areaедини́ца по́езда, тормозна́я — braked carriage [car] unitприведё́нные едини́цы — reduced [normalized] unitsпроизво́дные едини́цы — derived unitsпроизво́льная едини́ца — arbitrary unitедини́ца рабо́ты — unit of workрадиологи́ческие едини́цы — radiological unitsедини́ца, разру́шенная то́ком за́писи — write-disturbed oneедини́ца, разру́шенная то́ком счи́тывания — read-disturbed oneсбо́рочная едини́ца — assembly unitсветовы́е едини́цы — photometric unitsедини́ца систе́мы СГС — centimeter-gramme-second unitедини́ца систе́мы МКС — meter-kilogramme-second unitедини́ца сообще́ния — message unitспло́точная едини́ца лес. — raft sectionсре́дняя едини́ца — middle unitструкту́рная едини́ца рез. — base unitедини́ца счё́та — countтаксономи́ческая едини́ца — taxonomic unit, taxonтари́фная едини́ца — charge unitтеплова́я едини́ца — caloricity [thermal] unitтехни́ческие едини́цы — practical unitsтя́говая едини́ца — traction unitусло́вная едини́ца — arbitrary unitедини́цы фи́зико-хими́ческих величи́н — units of physical and chemical quantitiesедини́ца физи́ческой величины́ — physical unitфотометри́ческая едини́ца — photometric unitэквивале́нтная едини́ца — equivalent unitэксплуатацио́нная едини́ца — operational unitедини́ца электри́ческого то́ка — electrical unitэлектромагни́тная едини́ца — electromagnetic unit, EMUэлектростати́ческая едини́ца — electrostatic unit, esu -
9 единица
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10 κλεψύδρα
A pipette, = ὑδράρπαξ, a small vessel with one or more perforations below and an air-vent above, for transferring small quantities of liquid, Emp.100.9, Arist.Ph. 213a27, Pr. 914b9, al., Hero Spir.2.27 (described in 1.7), Simp.in Cael.524.19, in Ph.647.26.II water-clock, a water-butt with a narrow orifice underneath, through which the water trickled slowly, for measuring periods of time, used to time speeches in the law-courts, Ar.V.93, 857, Arist.Ath.67.2, etc.;πρὸς κλεψύδρας ἀγωνίζεσθαι Id.Po. 1451a8
;τὴν ὀπὴν βῦσον τῆς κλεψύδρης Herod.2.43
; for measuring military watches, Aen.Tact.22.24; for astronomical measurements, Procl. Hyp.4.74 (in the form of a perforated bowl floating on water, Gal. Anim.Pass.2.5); rarely for other purposes, Eub.p.182 K., Epin.2;εἰς τὴν ἐκπλήρωσιν τῆς κ. Herophil.
ap. Marcellin.Puls. 265.Greek-English dictionary (Αγγλικά Ελληνικά-λεξικό) > κλεψύδρα
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11 Graham, George
SUBJECT AREA: Horology[br]b. c.1674 Cumberland, Englandd. 16 November 1751 London, England[br]English watch-and clockmaker who invented the cylinder escapement for watches, the first successful dead-beat escapement for clocks and the mercury compensation pendulum.[br]Graham's father died soon after his birth, so he was raised by his brother. In 1688 he was apprenticed to the London clockmaker Henry Aske, and in 1695 he gained his freedom. He was employed as a journeyman by Tompion in 1696 and later married his niece. In 1711 he formed a partnership with Tompion and effectively ran the business in Tompion's declining years; he took over the business after Tompion died in 1713. In addition to his horological interests he also made scientific instruments, specializing in those for astronomical use. As a person, he was well respected and appears to have lived up to the epithet "Honest George Graham". He befriended John Harrison when he first went to London and lent him money to further his researches at a time when they might have conflicted with his own interests.The two common forms of escapement in use in Graham's time, the anchor escapement for clocks and the verge escapement for watches, shared the same weakness: they interfered severely with the free oscillation of the pendulum and the balance, and thus adversely affected the timekeeping. Tompion's two frictional rest escapements, the dead-beat for clocks and the horizontal for watches, had provided a partial solution by eliminating recoil (the momentary reversal of the motion of the timepiece), but they had not been successful in practice. Around 1720 Graham produced his own much improved version of the dead-beat escapement which became a standard feature of regulator clocks, at least in Britain, until its supremacy was challenged at the end of the nineteenth century by the superior accuracy of the Riefler clock. Another feature of the regulator clock owed to Graham was the mercury compensation pendulum, which he invented in 1722 and published four years later. The bob of this pendulum contained mercury, the surface of which rose or fell with changes in temperature, compensating for the concomitant variation in the length of the pendulum rod. Graham devised his mercury pendulum after he had failed to achieve compensation by means of the difference in expansion between various metals. He then turned his attention to improving Tompion's horizontal escapement, and by 1725 the cylinder escapement existed in what was virtually its final form. From the following year he fitted this escapement to all his watches, and it was also used extensively by London makers for their precision watches. It proved to be somewhat lacking in durability, but this problem was overcome later in the century by using a ruby cylinder, notably by Abraham Louis Breguet. It was revived, in a cheaper form, by the Swiss and the French in the nineteenth century and was produced in vast quantities.[br]Principal Honours and DistinctionsFRS 1720. Master of the Clockmakers' Company 1722.BibliographyGraham contributed many papers to the Philosophical Transactions of the Royal Society, in particular "A contrivance to avoid the irregularities in a clock's motion occasion'd by the action of heat and cold upon the rod of the pendulum" (1726) 34:40–4.Further ReadingBritten's Watch \& Clock Maker's Handbook Dictionary and Guide, 1978, rev. Richard Good, 16th edn, London, pp. 81, 84, 232 (for a technical description of the dead-beat and cylinder escapements and the mercury compensation pendulum).A.J.Turner, 1972, "The introduction of the dead-beat escapement: a new document", Antiquarian Horology 8:71.E.A.Battison, 1972, biography, Biographical Dictionary of Science, ed. C.C.Gillespie, Vol. V, New York, 490–2 (contains a résumé of Graham's non-horological activities).DV
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