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1 ♦ version
♦ version /ˈvɜ:ʃn/n.1 (ind., comm.) versione; modello: basic version, versione base; a cheaper version, una versione più economica; (comput.) version history, cronologia versioni; version number, numero di versione ( di un prodotto software)2 versione; edizione: abridged version, versione ridotta; The original version of the film was much longer, la versione originale del film era molto più lunga3 versione; resoconto: What's your version of events?, qual è la tua versione dei fatti?;4 versione; traduzione: the first Italian version of Shakespeare, la prima traduzione italiana delle opere di Shakespeare -
2 Handley Page, Sir Frederick
SUBJECT AREA: Aerospace[br]b. 15 November 1885 Cheltenham, Englandd. 21 April 1962 London, England[br]English aviation pioneer, specialist in large aircraft and developer of the slotted wing for safer slow flying.[br]Frederick Handley Page trained as an electrical engineer but soon turned his attention to the more exciting world of aeronautics. He started by manufacturing propellers for aeroplanes and airships, and then in 1909 he founded a public company. His first aeroplane, the Bluebird, was not a success, but an improved version flew well. It was known as the "Yellow Peril" because of its yellow doped finish and made a notable flight across London from Barking to Brooklands. In 1910 Handley Page became one of the first college lecturers in aeronautical engineering. During the First World War Handley Page concentrated on the production of large bombers. The 0/100 was a biplane with a wing span of 100 ft (30 m) and powered by two engines: it entered service in 1916. In 1918 an improved version, the 0/400, entered service and a larger four-engined bomber made its first flight. This was the V/1500, which was designed to bomb Berlin, but the war ended before this raid took place. After the war, Handley Page turned his attention to airline operations with the great advantage of having at his disposal large bombers which could be adapted to carry passengers. Handley Page Air Transport Ltd was formed in 1919 and provided services to several European cities. Eventually this company became part of Imperial Airways, but Handley Page continued to supply them with large airliners. Probably the most famous was the majestic HP 42 four-engined biplane, which set very high standards of comfort and safety. Safety was always important to Handley Page and in 1920 he developed a wing with a slot along the leading edge: this made slow flying safer by delaying the stall. Later versions used separate aerofoil-shaped slats on the leading edge that were sometimes fixed, sometimes retractable. The HP 42 was fitted with these slats. From the 1930s Handley Page produced a series of bombers, such as the Heyford, Hampden, Harrow and, most famous of all, the Halifax, which played a major role in the Second World War. Then followed the Victor V-bomber of 1952 with its distinctive "crescent" wing and high tailplane. Sir Frederick's last venture was the Herald short-haul airliner of 1955; designed to replace the ubiquitous Douglas DC-3, it was only a limited success.[br]Principal Honours and DistinctionsKnighted 1942. CBE 1918. Lord Lieutenant of the County of Middlesex 1956–60. Honorary Fellow of the Royal Aeronautical Society.Bibliography1950, "Towards slower and safer flying, improved take-off and landing and cheaper airports", Journal of the Royal Aeronautical Society.Further ReadingTwo accounts of Handley Page's life and work were published in the Journal of the Royal Aeronautical Society December 1962 and July 1964.D.C.Clayton, 1970, Handley Page: An Aircraft Album, London (for details of his aircraft).C.H.Barnes, 1976, Handley Page Aircraft since 1907, London.JDSBiographical history of technology > Handley Page, Sir Frederick
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3 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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