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1 покупка журналов
Advertising: magazine purchasing -
2 Daguerre, Louis Jacques Mandé
SUBJECT AREA: Photography, film and optics[br]b. 18 November 1787 Carmeilles-en-Parisis, Franced. 10 July 1851 Petit-Bry-sur-Marne, France[br]French inventor of the first practicable photographic process.[br]The son of a minor official in a magistrate's court, Daguerre showed an early aptitude for drawing. He was first apprenticed to an architect, but in 1804 he moved to Paris to learn the art of stage design. He was particularly interested in perspective and lighting, and later showed great ingenuity in lighting stage sets. Fascinated by a popular form of entertainment of the period, the panorama, he went on to create a variant of it called the diorama. It is assumed that he used a camera obscura for perspective drawings and, by purchasing it from the optician Chevalier, he made contact with Joseph Nicéphore Niepce. In 1829 Niepce and Daguerre entered into a formal partnership to perfect Niepce's heliographic process, but the partnership was dissolved when Niepce died in 1833, when only limited progress had been made. Daguerre continued experimenting alone, however, using iodine and silver plates; by 1837 he had discovered that images formed in the camera obscura could be developed by mercury vapour and fixed with a hot salt solution. After unsuccessfully attempting to sell his process, Daguerre approached F.J.D. Arago, of the Académie des Sciences, who announced the discovery in 1839. Details of Daguerre's work were not published until August of that year when the process was presented free to the world, except England. With considerable business acumen, Daguerre had quietly patented the process through an agent, Miles Berry, in London a few days earlier. He also granted a monopoly to make and sell his camera to a Monsieur Giroux, a stationer by trade who happened to be a relation of Daguerre's wife. The daguerreotype process caused a sensation when announced. Daguerre was granted a pension by a grateful government and honours were showered upon him all over the world. It was a direct positive process on silvered copper plates and, in fact, proved to be a technological dead end. The future was to lie with negative-positive photography devised by Daguerre's British contemporary, W.H.F. Talbot, although Daguerre's was the first practicable photographic process to be announced. It captured the public's imagination and in an improved form was to dominate professional photographic practice for more than a decade.[br]Principal Honours and DistinctionsOfficier de la Légion d'honneur 1839. Honorary FRS 1839. Honorary Fellow of the National Academy of Design, New York, 1839. Honorary Fellow of the Vienna Academy 1843. Pour le Mérite, bestowed by Frederick William IV of Prussia, 1843.Bibliography14 August 1839, British patent no. 8,194 (daguerrotype photographic process).The announcement and details of Daguerre's invention were published in both serious and popular English journals. See, for example, 1839 publications of Athenaeum, Literary Gazette, Magazine of Science and Mechanics Magazine.Further ReadingH.Gernsheim and A.Gernsheim, 1956, L.J.M. Daguerre (the standard account of Daguerre's work).—1969, The History of Photography, rev. edn, London (a very full account).J.M.Eder, 1945, History of Photography, trans. E. Epstean, New York (a very full account).JWBiographical history of technology > Daguerre, Louis Jacques Mandé
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3 Bezug
m; -(e)s, Bezüge2. nur Sg. (das Beziehen) von Ware: buying; Zeitung: subscription (+ Gen to); einer Rente etc.: drawing (of); bei Bezug von 25 Stück etc. on orders of3. Bezüge4. fig. reference; mit oder unter Bezug auf (+ Akk) with reference to; in Bezug auf (+ Akk) (hinsichtlich) as far as... goes ( oder is concerned); Bezug nehmen auf (+ Akk) refer to; Bezug nehmend auf Ihr Schreiben vom... auch with reference to your letter of...5. fig. (Verknüpfung) connection (zu with, to); der Bezug war mir nicht ganz klar auch I wasn’t quite sure how it oder they related ( oder what the connection was); den Bezug zu etw. herstellen make the connection ( oder link) to s.th. siehe auch Beziehung 16. fig. (innerer Bezug, Verhältnis) relationship (zu to); zu jemandem / etw. keinen Bezug mehr haben no longer have any connection(s) with s.o. / s.th.; siehe auch Beziehung 4* * *der Bezug(Beziehung) relationship; aspect;(Kissenbezug) cushion cover;(Kopfkissenbezug) pillow slip; pillowcase;(Verbindung) connection;(Zeitung) subscription;(Überzug) cover* * *Be|zugm2) (= Bespannung) strings plder Bezúg der diversen Magazine kostet uns... — the various magazines we subscribe to cost (us)...
5) pl (= Einkünfte) income, earnings pl6) (= Zusammenhang)See:= Beziehung7) (form = Berufung) referenceBezúg nehmen auf (+acc) — to refer to, to make reference to
Bezúg nehmend auf (+acc) — referring to, with reference to
mit or unter Bezúg auf (+acc) — with reference to
8)(= Hinsicht)
in Bezúg auf (+acc) — regarding, with regard to, concerningin Bezúg darauf — regarding that
* * *(the fact that, or the way in which, facts, events etc are connected: Is there any relationship between crime and poverty?) relationship* * *Be·zug<-[e]s, Bezüge>[bəˈtsu:k, pl bəˈtsy:gə]m2. (Bezugsstoff) covering\Bezug nehmend auf etw akk with reference to sth, referring to sth9. (Hinsicht)in \Bezug darauf regarding that* * *1) (für Kissen usw.) cover; (für Polstermöbel) loose cover; slip cover (Amer.); (für Betten) duvet cover; (für Kopfkissen) pillowcase3) Plural salary sing.4) (Papierdt.) inmit od. unter Bezug auf etwas — (Akk.) with reference to something
auf etwas (Akk.) Bezug nehmen — refer to something
5) (Verbindung) connection; link* * *2. nur sg (das Beziehen) von Ware: buying; Zeitung: subscription (+gen to); einer Rente etc: drawing (of);bei Bezug von 25 Stück etc on orders of4. fig reference;unter Bezug auf (+akk) with reference to;Bezug nehmen auf (+akk) refer to;Bezug nehmend auf Ihr Schreiben vom … auch with reference to your letter of …5. fig (Verknüpfung) connection (zu with, to);der Bezug war mir nicht ganz klar auch I wasn’t quite sure how it oder they related ( oder what the connection was);6. fig (innerer Bezug, Verhältnis) relationship (zu to);zu jemandem/etwas keinen Bezug mehr haben no longer have any connection(s) with sb/sth; → auch Beziehung 4* * *1) (für Kissen usw.) cover; (für Polstermöbel) loose cover; slip cover (Amer.); (für Betten) duvet cover; (für Kopfkissen) pillowcase3) Plural salary sing.4) (Papierdt.) inmit od. unter Bezug auf etwas — (Akk.) with reference to something
auf etwas (Akk.) Bezug nehmen — refer to something
5) (Verbindung) connection; link* * *¨-e m.reference n. -
4 Westinghouse, George
[br]b. 6 October 1846 Central Bridge, New York, USAd. 12 March 1914 New York, New York, USA[br]American inventor and entrepreneur, pioneer of air brakes for railways and alternating-current distribution of electricity.[br]George Westinghouse's father was an ingenious manufacturer of agricultural implements; the son, after a spell in the Union Army during the Civil War, and subsequently in the Navy as an engineer, went to work for his father. He invented a rotary steam engine, which proved impracticable; a rerailing device for railway rolling stock in 1865; and a cast-steel frog for railway points, with longer life than the cast-iron frogs then used, in 1868–9. During the same period Westinghouse, like many other inventors, was considering how best to meet the evident need for a continuous brake for trains, i.e. one by which the driver could apply the brakes on all vehicles in a train simultaneously instead of relying on brakesmen on individual vehicles. By chance he encountered a magazine article about the construction of the Mont Cenis Tunnel, with a description of the pneumatic tools invented for it, and from this it occurred to him that compressed air might be used to operate the brakes along a train.The first prototype was ready in 1869 and the Westinghouse Air Brake Company was set up to manufacture it. However, despite impressive demonstration of the brake's powers when it saved the test train from otherwise certain collision with a horse-drawn dray on a level crossing, railways were at first slow to adopt it. Then in 1872 Westinghouse added to it the triple valve, which enabled the train pipe to charge reservoirs beneath each vehicle, from which the compressed air would apply the brakes when pressure in the train pipe was reduced. This meant that the brake was now automatic: if a train became divided, the brakes on both parts would be applied. From then on, more and more American railways adopted the Westinghouse brake and the Railroad Safety Appliance Act of 1893 made air brakes compulsory in the USA. Air brakes were also adopted in most other parts of the world, although only a minority of British railway companies took them up, the remainder, with insular reluctance, preferring the less effective vacuum brake.From 1880 Westinghouse was purchasing patents relating to means of interlocking railway signals and points; he combined them with his own inventions to produce a complete signalling system. The first really practical power signalling scheme, installed in the USA by Westinghouse in 1884, was operated pneumatically, but the development of railway signalling required an awareness of the powers of electricity, and it was probably this that first led Westinghouse to become interested in electrical processes and inventions. The Westinghouse Electric Company was formed in 1886: it pioneered the use of electricity distribution systems using high-voltage single-phase alternating current, which it developed from European practice. Initially this was violently opposed by established operators of direct-current distribution systems, but eventually the use of alternating current became widespread.[br]Principal Honours and DistinctionsLégion d'honneur. Order of the Crown of Italy. Order of Leopold.BibliographyWestinghouse took out some 400 patents over forty-eight years.Further ReadingH.G.Prout, 1922, A Life of "George Westinghouse", London (biography inclined towards technicalities).F.E.Leupp, 1918, George Westinghouse: His Life and Achievements, Boston (London 1919) (biography inclined towards Westinghouse and his career).J.F.Stover, 1961, American Railroads, Chicago: University of Chicago Press, pp. 152–4.PJGR
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