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1 native
A n1 gen, Bot, Zool ( from a particular place) natif/-ive m/f ; to be a native of [person, plant] être originaire de ; to speak a language like a native parler une langue comme si c'était sa langue maternelle ;3 péj ( local resident) autochtone mf ; the natives never visit the museum hum les gens du pays ne vont jamais au musée.B adj1 ( original) [land] natal ; [tongue] maternel/-elle ; his native Austria l'Autriche, son pays natal ; native German speaker personne f de langue maternelle allemande ; native English speaker anglophone mf ; native French speaker francophone mf ;2 Anthrop, Bot, Zool [labour, peoples, quarter, species] indigène ; native to Northern Europe originaire de l'Europe du Nord ; to go native hum adopter les coutumes locales ;4 ( local) [produce] du pays. -
2 Bodmer, Johann Georg
SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering, Railways and locomotives, Steam and internal combustion engines, Textiles, Weapons and armour[br]b. 9 December 1786 Zurich, Switzerlandd. 30 May 1864 Zurich, Switzerland[br]Swiss mechanical engineer and inventor.[br]John George Bodmer (as he was known in England) showed signs of great inventive ability even as a child. Soon after completing his apprenticeship to a local millwright, he set up his own work-shop at Zussnacht. One of his first inventions, in 1805, was a shell which exploded on impact. Soon after this he went into partnership with Baron d'Eichthal to establish a cotton mill at St Blaise in the Black Forest. Bodmer designed the water-wheels and all the machinery. A few years later they established a factory for firearms and Bodmer designed special machine tools and developed a system of interchangeable manufacture comparable with American developments at that time. More inventions followed, including a detachable bayonet for breech-loading rifles and a rifled, breech-loading cannon for 12 lb (5.4 kg) shells.Bodmer was appointed by the Grand Duke of Baden to the posts of Director General of the Government Iron Works and Inspector of Artillery. He left St Blaise in 1816 and entered completely into the service of the Grand Duke, but before taking up his duties he visited Britain for the first time and made an intensive five-month tour of textile mills, iron works, workshops and similar establishments.In 1821 he returned to Switzerland and was engaged in setting up cotton mills and other engineering works. In 1824 he went back to England, where he obtained a patent for his improvements in cotton machinery and set up a mill near Bolton incorporating his ideas. His health failing, he was obliged to return to Switzerland in 1828, but he was soon busy with engineering works there and in France. In 1833 he went to England again, first to Bolton and four years later to Manchester in partnership with H.H.Birley. In the next ten years he patented many more inventions in the fields of textile machinery, steam engines and machine tools. These included a balanced steam engine, a mechanical stoker, steam engine valve gear, gear-cutting machines and a circular planer or vertical lathe, anticipating machines of this type later developed in America by E.P. Bullard. The metric system was used in his workshops and in gearing calculations he introduced the concept of diametral pitch, which then became known as "Manchester Pitch". The balanced engine was built in stationary form and in two locomotives, but although their running was remarkably smooth the additional complication prevented their wider use.After the death of H.H.Birley in 1846, Bodmer removed to London until 1848, when he went to Austria. About 1860 he returned to his native town of Zurich. He remained actively engaged in all kinds of inventions up to the end of his life. He obtained fourteen British patents, each of which describes many inventions; two of these patents were extended beyond the normal duration of fourteen years. Two others were obtained on his behalf, one by his brother James in 1813 for his cannon and one relating to railways by Charles Fox in 1847. Many of his inventions had little direct influence but anticipated much later developments. His ideas were sound and some of his engines and machine tools were in use for over sixty years. He was elected a Member of the Institution of Civil Engineers in 1835.[br]Bibliography1845, "The advantages of working stationary and marine engines with high-pressure steam, expansively and at great velocities; and of the compensating, or double crank system", Minutes of the Proceedings of the Institution of Civil Engineers 4:372–99.1846, "On the combustion of fuel in furnaces and steam-boilers, with a description of Bodmer's fire-grate", Minutes of the Proceedings of the Institution of Civil Engineers 5:362–8.Further ReadingObituary, 1868–9, Minutes of the Proceedings of the Institution of Civil Engineers 28:573–608.H.W.Dickinson, 1929–30, "Diary of John George Bodmer, 1816–17", Transactions of the Newcomen Society 10:102–14.D.Brownlie, 1925–6, John George Bodmer, his life and work, particularly in relation to the evolution of mechanical stoking', Transactions of the Newcomen Society 6:86–110.W.O.Henderson (ed.), 1968, Industrial Britain Under the Regency: The Diaries of Escher, Bodmer, May and de Gallois 1814–1818, London: Frank Cass (a more complete account of his visit to Britain).RTS -
3 Poelzig, Hans
SUBJECT AREA: Architecture and building[br]b. 1869 Berlin, Germanyd. June 1936 Berlin, Germany[br]German teacher and practising architect, the most notable individualistic exponent of the German Expressionist movement in the modern school.[br]In the last decade of the nineteenth century and in the first of the twentieth, Poelzig did not, like most of his colleagues in Germany and Austria, follow the Jugendstil theme or the eclectic or fundamentalist lines: he set a path to individualism. In 1898 he began a teaching career at the Breslau (now Wroclaw, Poland) Academy of Arts and Crafts, remaining there until 1916. He early introduced workshop practice into the curriculum, presaging Gropius's Bauhaus ideas by many years; the school's workshop produced much of the artisan needs for a number of his buildings. From Breslau Poelzig moved to Dresden, where he was appointed City Architect. It was there that he launched his Expressionist line: which was particularly evident in the town hall and concert hall in the city. The structure for which Poelzig is best known and with which his name will always be associated is the Großes Schauspielhaus in Berlin; he had returned to his native city after the First World War and this great theatre was his first commission there. Using modern materials, he created a fabulous interior to seat 5,000 spectators. It was in the form of a vast amphitheatre with projecting stage and with the curving area roofed by a cavernous, stalactited dome, the Arabic-style stalactites of which were utilized by Poelzig for acoustic purposes. In the 1920s Poelzig went on to design cinemas, a field for which Expressionism was especially suited; these included the Capitol Cinema in Berlin and the Deli in Breslau. For his later industrial commissions—for example, the administrative building for the chemical firm I.G.Far ben in Frankfurt—he had perforce to design in more traditional modern manner.Poelzig died in 1936, which spared him, unlike many of his contemporaries, the choice of emigrating or working for National Socialism.[br]Further ReadingDennis Sharp, 1966, Modern Architecture and Expressionism, Longmans.Theodor Heuss, 1966, Hans Poelzig: Lebensbild eines Baumeister, Tübingen, Germany: Wunderlich.DY -
4 Volta, Alessandro Giuseppe Antonio Anastasio
SUBJECT AREA: Electricity[br]b. 18 February 1745 Como, Italyd. 5 March 1827 Como, Italy[br]Italian physicist, discoverer of a source of continuous electric current from a pile of dissimilar metals.[br]Volta had an early command of English, French and Latin, and also learned to read Dutch and Spanish. After completing studies at the Royal Seminary in Como he was involved in the study of physics, chemistry and electricity. He became a teacher of physics in his native town and in 1779 was appointed Professor of Physics at the University of Pavia, a post he held for forty years.With a growing international reputation and a wish to keep abreast of the latest developments, in 1777 he began the first of many travels abroad. A journey started in 1781 to Switzerland, Germany, Belgium, Holland, France and England lasted about one year. By 1791 he had been elected to membership of many learned societies, including those in Zurich, Berlin, Berne and Paris. Volta's invention of his pile resulted from a controversy with Luigi Galvani, Professor of Anatomy at the University of Bologna. Galvani discovered that the muscles of frogs' legs contracted when touched with two pieces of different metals and attributed this to a phenomenon of the animal tissue. Volta showed that the excitation was due to a chemical reaction resulting from the contact of the dissimilar metals when moistened. His pile comprised a column of zinc and silver discs, each pair separated by paper moistened with brine, and provided a source of continuous current from a simple and accessible source. The effectiveness of the pile decreased as the paper dried and Volta devised his crown of cups, which had a longer life. In this, pairs of dissimilar metals were placed in each of a number of cups partly filled with an electrolyte such as brine. Volta first announced the results of his experiments with dissimilar metals in 1800 in a letter to Sir Joseph Banks, President of the Royal Society. This letter, published in the Transactions of the Royal Society, has been regarded as one of the most important documents in the history of science. Large batteries were constructed in a number of laboratories soon after Volta's discoveries became known, leading immediately to a series of developments in electrochemistry and eventually in electromagnetism. Volta himself made little further contribution to science. In recognition of his achievement, at a meeting of the International Electrical Congress in Paris in 1881 it was agreed to name the unit of electrical pressure the "volt".[br]Principal Honours and DistinctionsFRS 1791. Royal Society Copley Medal 1794. Knight of the Iron Crown, Austria, 1806. Senator of the Realm of Lombardy 1809.Bibliography1800, Philosophical Transactions of the Royal Society 18:744–6 (Volta's report on his discovery).Further ReadingG.Polvani, 1942, Alessandro Volta, Pisa (the best account available).B.Dibner, 1964, Alessandro Volta and the Electric Battery, New York (a detailed account).C.C.Gillispie (ed.), 1976, Dictionary of Scientific Biography, Vol. XIV, New York, pp.66–82 (includes an extensive biography).F.Soresni, 1988, Alessandro Volta, Milan (includes illustrations of Volta's apparatus, with brief text).GWBiographical history of technology > Volta, Alessandro Giuseppe Antonio Anastasio
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