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1 Talbot
Deutsch-Englisch Wörterbuch der Elektrotechnik und Elektronik > Talbot
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2 Talbot
m.Talbot, William Henry Fox Talbot. -
3 Talbot
ALLEN COTTON (Allan Silk, Alien Long Staple, Talbot)Variety of raw cotton growing in Mississippi, the staple is fine and silky, measuring up to 11/8-in., the lint is less than 30 per cent. The colour is white and much used for blending with Egyptian. Spins up to 50's or 60's warp yarns. -
4 Talbot Cotton
Same as Alien cotton. -
5 Talbot, William Henry Fox
SUBJECT AREA: Photography, film and optics[br]b. 11 February 1800 Melbury, Englandd. 17 September 1877 Lacock, Wiltshire, England[br]English scientist, inventor of negative—positive photography and practicable photo engraving.[br]Educated at Harrow, where he first showed an interest in science, and at Cambridge, Talbot was an outstanding scholar and a formidable mathematician. He published over fifty scientific papers and took out twelve English patents. His interests outside the field of science were also wide and included Assyriology, etymology and the classics. He was briefly a Member of Parliament, but did not pursue a parliamentary career.Talbot's invention of photography arose out of his frustrating attempts to produce acceptable pencil sketches using popular artist's aids, the camera discura and camera lucida. From his experiments with the former he conceived the idea of placing on the screen a paper coated with silver salts so that the image would be captured chemically. During the spring of 1834 he made outline images of subjects such as leaves and flowers by placing them on sheets of sensitized paper and exposing them to sunlight. No camera was involved and the first images produced using an optical system were made with a solar microscope. It was only when he had devised a more sensitive paper that Talbot was able to make camera pictures; the earliest surviving camera negative dates from August 1835. From the beginning, Talbot noticed that the lights and shades of his images were reversed. During 1834 or 1835 he discovered that by placing this reversed image on another sheet of sensitized paper and again exposing it to sunlight, a picture was produced with lights and shades in the correct disposition. Talbot had discovered the basis of modern photography, the photographic negative, from which could be produced an unlimited number of positives. He did little further work until the announcement of Daguerre's process in 1839 prompted him to publish an account of his negative-positive process. Aware that his photogenic drawing process had many imperfections, Talbot plunged into further experiments and in September 1840, using a mixture incorporating a solution of gallic acid, discovered an invisible latent image that could be made visible by development. This improved calotype process dramatically shortened exposure times and allowed Talbot to take portraits. In 1841 he patented the process, an exercise that was later to cause controversy, and between 1844 and 1846 produced The Pencil of Nature, the world's first commercial photographically illustrated book.Concerned that some of his photographs were prone to fading, Talbot later began experiments to combine photography with printing and engraving. Using bichromated gelatine, he devised the first practicable method of photo engraving, which was patented as Photoglyphic engraving in October 1852. He later went on to use screens of gauze, muslin and finely powdered gum to break up the image into lines and dots, thus anticipating modern photomechanical processes.Talbot was described by contemporaries as the "Father of Photography" primarily in recognition of his discovery of the negative-positive process, but he also produced the first photomicrographs, took the first high-speed photographs with the aid of a spark from a Leyden jar, and is credited with proposing infra-red photography. He was a shy man and his misguided attempts to enforce his calotype patent made him many enemies. It was perhaps for this reason that he never received the formal recognition from the British nation that his family felt he deserved.[br]Principal Honours and DistinctionsFRS March 1831. Royal Society Rumford Medal 1842. Grand Médaille d'Honneur, L'Exposition Universelle, Paris, 1855. Honorary Doctorate of Laws, Edinburgh University, 1863.Bibliography1839, "Some account of the art of photographic drawing", Royal Society Proceedings 4:120–1; Phil. Mag., XIV, 1839, pp. 19–21.8 February 1841, British patent no. 8842 (calotype process).1844–6, The Pencil of Nature, 6 parts, London (Talbot'a account of his invention can be found in the introduction; there is a facsimile edn, with an intro. by Beamont Newhall, New York, 1968.Further ReadingH.J.P.Arnold, 1977, William Henry Fox Talbot, London.D.B.Thomas, 1964, The First Negatives, London (a lucid concise account of Talbot's photograph work).J.Ward and S.Stevenson, 1986, Printed Light, Edinburgh (an essay on Talbot's invention and its reception).H.Gernsheim and A.Gernsheim, 1977, The History of Photography, London (a wider picture of Talbot, based primarily on secondary sources).JWBiographical history of technology > Talbot, William Henry Fox
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6 Talbot, Benjamin
SUBJECT AREA: Metallurgy[br]b. 19 September 1864 Wellington, Shropshire, Englandd. 16 December 1947 Solberge Hall, Northallerton, Yorkshire, England[br]Talbot, William Henry Fox English steelmaker and businessman who introduced a technique for producing steel "continuously" in large tilting basic-lined open-hearth furnaces.[br]After spending some years at his father's Castle Ironworks and at Ebbw Vale Works, Talbot travelled to the USA in 1890 to become Superintendent of the Southern Iron and Steel Company of Chattanooga, Tennessee, where he initiated basic open-hearth steelmaking and a preliminary slag washing to remove silicon. In 1893 he moved to Pennsylvania as Steel Superintendent at the Pencoyd works; there, six years later, he began his "continuous" steelmaking process. Returning to Britain in 1900, Talbot marketed the technique: after ten years it was in successful use in Britain, continental Europe and the USA; it promoted the growth of steel production.Meanwhile its originator had joined the Cargo Fleet Iron Company Limited on Teesside, where he was made Managing Director in 1907. Twelve years later he assumed, in addition, the same position in the allied South Durham Steel and Iron Company Limited. While remaining Managing Director, he was appointed Deputy Chairman of both companies in 1925, and Chairman in 1940. The companies he controlled survived the depressed 1920s and 1930s and were significant contributors to British steel output, with a capacity of more than half a million tonnes per year.[br]Principal Honours and DistinctionsPresident, Iron and Steel Institute 1928, and (British) National Federation of Iron and Steel Manufacturers. Iron and Steel Institute (London) Bessemer Gold Medal 1908. Franklin Institute (Philadelphia), Elliott Cresson Gold Medal, and John Scott Medal 1908.Bibliography1900, "The open-hearth continuous steel process", Journal of the Iron and Steel Institute 57 (1):33–61.1903, "The development of the continuous open-hearth process", Journal of the Iron and Steel Institute 63(1):57–73.1905, "Segregation in steel ingots", Journal of the Iron and Steel Institute 68(2):204–23. 1913, "The production of sound steel by lateral compression of the ingot whilst its centre is liquid", Journal of the Iron and Steel Institute 87(1):30–55.Further ReadingG.Boyce, 1986, entry in Dictionary of Business Biography, Vol. V, ed. J.Jeremy, Butterworth.W.G.Willis, 1969, South Durham Steel and Iron Co. Ltd, South Durham Steel and Iron Company Ltd (includes a few pages specifically on Talbot, and a portrait photo). J.C.Carr and W.Taplin, 1962, History of the British Steel Industry, Cambridge, Mass.: Harvard University Press (mentions Talbot's business attitudes).JKA -
7 Talbot's Chancery Cases
Law: Cas.t.Tal. ("Cases in the time of Talbot")Универсальный русско-английский словарь > Talbot's Chancery Cases
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8 Talbot House
General subject: Toc H (религиозно-благотворительная организация; Великобритания) -
9 Talbot-Außenrückspiegel
German-english technical dictionary > Talbot-Außenrückspiegel
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10 hukum Talbot
Talbot law -
11 Fox Talbot
m.Fox Talbot, William Henry Fox Talbot. -
12 Fox Talbot, William Henry
Biographical history of technology > Fox Talbot, William Henry
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13 Cases temp. Talbot
Law: Forr. (by Forrester)Универсальный русско-английский словарь > Cases temp. Talbot
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14 Pope & Talbot, Inc.
NYSE. POPУниверсальный русско-английский словарь > Pope & Talbot, Inc.
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15 Porter, Charles Talbot
SUBJECT AREA: Steam and internal combustion engines[br]b. 18 January 1826 Auburn, New York, USAd. 1910 USA[br]American inventor of a stone dressing machine, an improved centrifugal governor and a high-speed steam engine.[br]Porter graduated from Hamilton College, New York, in 1845, read law in his father's office, and in the autumn of 1847 was admitted to the Bar. He practised for six or seven years in Rochester, New York, and then in New York City. He was drawn into engineering when aged about 30, first through a client who claimed to have invented a revolutionary type of engine and offered Porter the rights to it as payment of a debt. Having lent more money, Porter saw neither the man nor the engine again. Porter followed this with a similar experience over a patent for a stone dressing machine, except this time the machine was built. It proved to be a failure, but Porter set about redesigning it and found that it was vastly improved when it ran faster. His improved machine went into production. It was while trying to get the steam engine that drove the stone dressing machine to run more smoothly that he made a discovery that formed the basis for his subsequent work.Porter took the ordinary Watt centrifugal governor and increased the speed by a factor of about ten; although he had to reduce the size of the weights, he gained a motion that was powerful. To make the device sufficiently responsive at the right speed, he balanced the centrifugal forces by a counterweight. This prevented the weights flying outwards until the optimum speed was reached, so that the steam valves remained fully open until that point and then the weights reacted more quickly to variations in speed. He took out a patent in 1858, and its importance was quickly recognized. At first he manufactured and sold the governors himself in a specially equipped factory, because this was the only way he felt he could get sufficient accuracy to ensure a perfect action. For marine use, the counterweight was replaced by a spring.Higher speed had brought the advantage of smoother running and so he thought that the same principles could be applied to the steam engine itself, but it was to take extensive design modifications over several years before his vision was realized. In the winter of 1860–1, J.F. Allen met Porter and sketched out his idea of a new type of steam inlet valve. Porter saw the potential of this for his high-speed engine and Allen took out patents for it in 1862. The valves were driven by a new valve gear designed by Pius Fink. Porter decided to display his engine at the International Exhibition in London in 1862, but it had to be assembled on site because the parts were finished in America only just in time to be shipped to meet the deadline. Running at 150 rpm, the engine caused a sensation, but as it was non-condensing there were few orders. Porter added condensing apparatus and, after the failure of Ormerod Grierson \& Co., entered into an agreement with Joseph Whitworth to build the engines. Four were exhibited at the 1867 Paris Exposition Universelle, but Whitworth and Porter fell out and in 1868 Porter returned to America.Porter established another factory to build his engine in America, but he ran into all sorts of difficulties, both mechanical and financial. Some engines were built, and serious production was started c. 1874, but again there were further problems and Porter had to leave his firm. High-speed engines based on his designs continued to be made until after 1907 by the Southwark Foundry and Machine Company, Philadelphia, so Porter's ideas were proved viable and led to many other high-speed designs.[br]Bibliography1908, Engineering Reminiscences, New York: J. Wiley \& Sons; reprinted 1985, Bradley, Ill.: Lindsay (autobiography; the main source of information about his life).Further ReadingR.L.Hills, 1989, Power from Steam. A History of the Stationary Steam Engine, Cambridge University Press (examines his governor and steam engine).O.Mayr, 1974, "Yankee practice and engineering theory; Charles T.Porter and the dynamics of the high-speed engine", Technology and Culture 16 (4) (examines his governor and steam engine).RLH -
16 печь Тальбота
Русско-английский новый политехнический словарь > печь Тальбота
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17 резонатор Тальбота
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18 закон на Талбот
talbot's lawБългарски-Angleščina политехнически речник > закон на Талбот
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19 proces Talbota ciągły proces w przechylnym piecu martenowskim
• Talbot processSłownik polsko-angielski dla inżynierów > proces Talbota ciągły proces w przechylnym piecu martenowskim
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20 Herschel, John Frederick William
SUBJECT AREA: Photography, film and optics[br]b. 7 March 1792 Slough, Englandd. 11 May 1871 Collingwood, England[br]English scientist who introduced "hypo" (thiosulphate) as a photographic fixative and discovered the blueprint process.[br]The only son of Sir William Herschel, the famous astronomer, John graduated from Cambridge in 1813 and went on to become a distinguished astronomer, mathematician and chemist. He left England in November 1833 to set up an observatory near Cape Town, South Africa, where he embarked on a study of the heavens in the southern hemisphere. He returned to England in the spring of 1838, and between 1850 and 1855 Herschel served as Master of the Royal Mint. He made several notable contributions to photography, perhaps the most important being his discovery in 1819 that hyposulphites (thiosulphates) would dissolve silver salts. He brought this property to the attention of W.H.F. Talbot, who in 1839 was using a common salt solution as a fixing agent for his early photographs. After trials, Talbot adopted "hypo", which was a far more effective fixative. It was soon adopted by other photographers and eventually became the standard photographic fixative, as it still is in the 1990s. After hearing of the first photographic process in January 1839, Herschel devised his own process within a week. In September 1839 he made the first photograph on glass. He is credited with introducing the words "positive", "negative" and "snapshot" to photography, and in 1842 he invented the cyanotype or "blueprint" process. This process was later to be widely adopted by engineers and architects for the reproduction of plans and technical drawings, a practice abandoned only in the late twentieth century.[br]Principal Honours and DistinctionsKnight of the Royal Hanoverian Guelphic Order 1831. Baronet 1838. FRS 1813. Copley Medal 1821.Further ReadingDictionary of National Biography, 1968, Vol. IX, pp. 714–19.H.J.P.Arnold, 1977, William Henry Fox Talbot, London; Larry J.Schaaf, 1992, Out of the Shadows: Herschel, Talbot and the Invention of Photography, Newhaven and London (for details of his contributions to photography and his relationship with Talbot).JWBiographical history of technology > Herschel, John Frederick William
См. также в других словарях:
Talbot — Год основания 1903 Расположение … Википедия
TALBOT (W. H. F.) — TALBOT WILLIAM HENRY FOX (1800 1877) Photographe et inventeur anglais, Talbot apporte des contributions importantes aux premiers développements de la photographie. Formé à Harrow et à Cambridge, il publiera pendant cinquante ans des articles de… … Encyclopédie Universelle
Talbot — Tal bot, n. A sort of dog, noted for quick scent and eager pursuit of game. [Obs.] Wase (1654). [1913 Webster] Note: The figure of a dog is borne in the arms of the Talbot family, whence, perhaps, the name. [1913 Webster] … The Collaborative International Dictionary of English
Talbot — Le nom est très fréquent en Angleterre, mais également bien implanté en France (79, 76, 18 notamment). Il semble que le nom anglais soit d origine française, mais que beaucoup de Talbot français soient issus d immigrés anglais. Il s agit… … Noms de famille
Talbot [1] — Talbot (spr. Tahlbott), altes britisches Geschlecht, welches sich von 1) T., Baron von Cleuville, herschreibt, welcher 1066 mit Wilhelm dem Eroberer aus der Normandie nach England kam. Mehre seiner Nachkommen bekleideten im 12., 13. u. 14. Jahrh … Pierer's Universal-Lexikon
Talbot [2] — Talbot (spr. Tahlbött), 1) Grafschaft im Staate Maryland (Nordamerika), an der östlichen Küste der Chesapeake Bai gelegen, 11 QM., im O. vom Choptank River begrenzt; Boden sehr fruchtbar u. trefflich cultivirt; Producte: Weizen, Mais, Rindvieh;… … Pierer's Universal-Lexikon
Talbot — (spr. taolböt), John, s. Shrewsbury … Meyers Großes Konversations-Lexikon
Talbot — (spr. tahlbŏt), John, engl. Kriegsheld, s. Shrewsbury (Grafentitel) … Kleines Konversations-Lexikon
Talbot [2] — Talbŏt, einer der Erfinder der Photographie (s.d.) … Kleines Konversations-Lexikon
Talbot — (Tahlbött), John, geb. um 1373 zu Blechmore in Shropshire, zeichnete sich in den Kriegen gegen Frankreich aus, wurde zum Lohne 1442 Graf Shrewsbury, 1446 Graf von Waterford und Wexford, blieb von einer Kanonenkugel getroffen 20. Juli 1453 vor… … Herders Conversations-Lexikon
Talbot — Talbot, William Henry Fox (1800 1877) a British photographer who was the first to invent a way of making more than one photograph from the same ↑negative (=image on a piece of film that shows dark areas as light and light areas as dark) … Dictionary of contemporary English
