-
41 simple
simple ['sɪmpəl]∎ his reasons are never simple ses raisons ne sont jamais simples;∎ it's a simple operation c'est une opération simple;∎ getting there was the simple part ce n'est pas d'y aller qui était difficile;∎ it's a simple meal to prepare c'est un repas facile à préparer;∎ it would be simpler to do it myself ce serait plus simple que je le fasse ou si je le faisais moi-même;∎ it should be a simple matter to change your ticket tu ne devrais avoir aucun mal à changer ton billet;∎ to yearn for the simple life aspirer au retour à la nature;∎ let's hear your story, then, but keep it simple bon, racontez votre histoire, mais passez-moi les détails;∎ it's as simple as that c'est aussi simple que ça(b) (plain → tastes, ceremony, life, style) simple;∎ she wore a simple black dress elle portait une robe noire toute simple;∎ I want a simple "yes" or "no" répondez-moi simplement par "oui" ou par "non";∎ let me explain in simple terms or language laissez-moi vous expliquer ça en termes simples;∎ I did it for the simple reason that I had no choice je l'ai fait pour la simple raison que je n'avais pas le choix(c) (unassuming) simple, sans façons;∎ despite her success, she remains simple and unaffected malgré sa réussite, elle est restée simple et naturelle∎ he's a bit simple il est un peu simplet(e) (basic → substance, fracture, sentence) simple►► Law simple contract convention f verbale, acte m sous seing privé;Mathematics simple equation équation f du premier degré;Mathematics simple fraction fraction f ordinaire;Medicine simple fracture fracture f simple;Physics simple harmonic motion mouvement m harmonique simple;Finance simple interest (UNCOUNT) intérêts mpl simples;simple machine pièce f (d'un mécanisme);Simple Simon naïf m, nigaud m;Grammar simple tense temps m simple -
42 Carlson, Chester Floyd
SUBJECT AREA: Photography, film and optics[br]b. 8 July 1906 Seattle, Washington, USAd. 19 September 1968 New York, USA[br][br]Carlson studied physics at the California Institute of Technology and in 1930 he took a research position at Bell Telephone Laboratories, but soon transferred to their patent department. To equip himself in this field, Carlson studied law, and in 1934 he became a patent attorney at P.R.Mallory \& Co., makers of electrical apparatus. He was struck by the difficulty in obtaining copies of documents and drawings; indeed, while still at school, he had encountered printing problems in trying to produce a newsletter for amateur chemists. He began experimenting with various light-sensitive substances, and by 1937 he had conceived the basic principles of xerography ("dry writing"), using the property of certain substances of losing an electrostatic charge when light impinges on them. His work for Mallory brought him into contact with the Battelle Memorial Institute, the world's largest non-profit research organization; their subsidiary, set up to develop promising ideas, took up Carlson's invention. Carlson received his first US patent for the process in 1940, with two more in 1942, and he assigned to Battelle exclusive patent rights in return for a share of any future proceeds. It was at Battelle that selenium was substituted as the light-sensitive material.In 1946 the Haloid Company of Rochester, manufacturers of photographic materials and photocopying equipment, heard of the Xerox copier and, seeing it as a possible addition to their products, took out a licence to develop it commercially. The first Xerox Copier was tested during 1949 and put on the market the following year. The process soon began to displace older methods, such as Photostat, but its full impact on the public came in 1959 with the advent of the Xerox 914 Copier. It is fair to apply the overworked word "revolution" to the change in copying methods initiated by Carlson. He became a multimillionaire from his royalties and stock holding, and in his last years he was able to indulge in philanthropic activities.[br]Further ReadingObituary, 1968, New York Times, 20 September.R.M.Schaffert, 1954, "Developments in xerography", Penrose Annual.J.Jewkes, 1969, The Sources of Invention, 2nd edn, London: Macmillan, pp. 405–8.LRD -
43 Carnot, Nicolas Léonard Sadi
SUBJECT AREA: Steam and internal combustion engines[br]b. 1 June 1796 Paris, Franced. 24 August 1831 Paris, France[br]French laid the foundations for modern thermodynamics through his book Réflexions sur la puissance motrice du feu when he stated that the efficiency of an engine depended on the working substance and the temperature drop between the incoming and outgoing steam.[br]Sadi was the eldest son of Lazare Carnot, who was prominent as one of Napoleon's military and civil advisers. Sadi was born in the Palais du Petit Luxembourg and grew up during the Napoleonic wars. He was tutored by his father until in 1812, at the minimum age of 16, he entered the Ecole Polytechnique to study stress analysis, mechanics, descriptive geometry and chemistry. He organized the students to fight against the allies at Vincennes in 1814. He left the Polytechnique that October and went to the Ecole du Génie at Metz as a student second lieutenant. While there, he wrote several scientific papers, but on the Restoration in 1815 he was regarded with suspicion because of the support his father had given Napoleon. In 1816, on completion of his studies, Sadi became a second lieutenant in the Metz engineering regiment and spent his time in garrison duty, drawing up plans of fortifications. He seized the chance to escape from this dull routine in 1819 through an appointment to the army general staff corps in Paris, where he took leave of absence on half pay and began further courses of study at the Sorbonne, Collège de France, Ecole des Mines and the Conservatoire des Arts et Métiers. He was inter-ested in industrial development, political economy, tax reform and the fine arts.It was not until 1821 that he began to concentrate on the steam-engine, and he soon proposed his early form of the Carnot cycle. He sought to find a general solution to cover all types of steam-engine, and reduced their operation to three basic stages: an isothermal expansion as the steam entered the cylinder; an adiabatic expansion; and an isothermal compression in the condenser. In 1824 he published his Réflexions sur la puissance motrice du feu, which was well received at the time but quickly forgotten. In it he accepted the caloric theory of heat but pointed out the impossibility of perpetual motion. His main contribution to a correct understanding of a heat engine, however, lay in his suggestion that power can be produced only where there exists a temperature difference due "not to an actual consumption of caloric but to its transportation from a warm body to a cold body". He used the analogy of a water-wheel with the water falling around its circumference. He proposed the true Carnot cycle with the addition of a final adiabatic compression in which motive power was con sumed to heat the gas to its original incoming temperature and so closed the cycle. He realized the importance of beginning with the temperature of the fire and not the steam in the boiler. These ideas were not taken up in the study of thermodynartiics until after Sadi's death when B.P.E.Clapeyron discovered his book in 1834.In 1824 Sadi was recalled to military service as a staff captain, but he resigned in 1828 to devote his time to physics and economics. He continued his work on steam-engines and began to develop a kinetic theory of heat. In 1831 he was investigating the physical properties of gases and vapours, especially the relationship between temperature and pressure. In June 1832 he contracted scarlet fever, which was followed by "brain fever". He made a partial recovery, but that August he fell victim to a cholera epidemic to which he quickly succumbed.[br]Bibliography1824, Réflexions sur la puissance motrice du feu; pub. 1960, trans. R.H.Thurston, New York: Dover Publications; pub. 1978, trans. Robert Fox, Paris (full biographical accounts are provided in the introductions of the translated editions).Further ReadingDictionary of Scientific Biography, 1971, Vol. III, New York: C.Scribner's Sons. T.I.Williams (ed.), 1969, A Biographical Dictionary of Scientists, London: A. \& C.Black.Chambers Concise Dictionary of Scientists, 1989, Cambridge.D.S.L.Cardwell, 1971, from Watt to Clausius. The Rise of Thermodynamics in the Early Industrial Age, London: Heinemann (discusses Carnot's theories of heat).RLHBiographical history of technology > Carnot, Nicolas Léonard Sadi
-
44 Rankine, William John Macquorn
SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering[br]b. 5 July 1820 Edinburgh, Scotlandd. 1872[br][br]Rankine was educated at Ayr Academy and Glasgow High School, although he appears to have learned much of his basic mathematics and physics through private study. He attended Edinburgh University and then assisted his father, who was acting as Superintendent of the Edinburgh and Dalkeith Railway. This introduction to engineering practice was followed in 1838 by his appointment as a pupil to Sir John MacNeill, and for the next four years he served under MacNeill on his Irish railway projects. While still in his early twenties, Rankine presented pioneering papers on metal fatigue and other subjects to the Institution of Civil Engineers, for which he won a prize, but he appears to have resigned from the Civils in 1857 after an argument because the Institution would not transfer his Associate Membership into full Membership. From 1844 to 1848 Rankine worked on various projects for the Caledonian Railway Company, but his interests were becoming increasingly theoretical and a series of distinguished papers for learned societies established his reputation as a leading scholar in the new science of thermodynamics. He was elected Fellow of the Royal Society in 1853. At the same time, he remained intimately involved with practical questions of applied science, in shipbuilding, marine engineering and electric telegraphy, becoming associated with the influential coterie of fellow Scots such as the Thomson brothers, Napier, Elder, and Lewis Gordon. Gordon was then the head of a large and successful engineering practice, but he was also Regius Professor of Engineering at the University of Glasgow, and when he retired from the Chair to pursue his business interests, Rankine, who had become his Assistant, was appointed in his place.From 1855 until his premature death in 1872, Rankine built up an impressive engineering department, providing a firm theoretical basis with a series of text books that he wrote himself and most of which remained in print for many decades. Despite his quarrel with the Institution of Civil Engineers, Rankine took a keen interest in the institutional development of the engineering profession, becoming the first President of the Institution of Engineers and Shipbuilders in Scotland, which he helped to establish in 1857. Rankine campaigned vigorously for the recognition of engineering studies as a full university degree at Glasgow, and he achieved this in 1872, the year of his death. Rankine was one of the handful of mid-nineteenth century engineers who virtually created engineering as an academic discipline.[br]Principal Honours and DistinctionsFRS 1853. First President, Institution of Engineers and Shipbuilders in Scotland, 1857.Bibliography1858, Manual of Applied Mechanics.1859, Manual of the Steam Engine and Other Prime Movers.1862, Manual of Civil Engineering.1869, Manual of Machinery and Millwork.Further ReadingJ.Small, 1957, "The institution's first president", Proceedings of the Institution of Engineers and Shipbuilders in Scotland: 687–97.H.B.Sutherland, 1972, Rankine. His Life and Times.ABBiographical history of technology > Rankine, William John Macquorn
-
45 thermodynamics
термодинамика
—
[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
thermodynamics
The branch of physics which seeks to derive, from a few basic postulates, relationships between properties of matter, especially those connected with temperature, and a description of the conversion of energy from one form to another. (Source: MGH)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Англо-русский словарь нормативно-технической терминологии > thermodynamics
См. также в других словарях:
Basic physics of the violin — The distinctive sound of a violin is the result of interactions between its many parts. Drawing a bow across the strings causes them to vibrate. This vibration is transmitted through the bridge and sound post to the body of the violin (mainly the … Wikipedia
Physics — (Greek: physis φύσις), in everyday terms, is the science of matter [R. P. Feynman, R. B. Leighton, M. Sands (1963), The Feynman Lectures on Physics , ISBN 0 201 02116 1 Hard cover. p.1 1 Feynman begins with the atomic hypothesis.] and its motion … Wikipedia
Physics First — is an educational program that teaches a basic physics course in the ninth grade (usually 15 year olds), rather than the biology course which is more standard in public schools. This course relies on the limited math skills that the students have … Wikipedia
physics — /fiz iks/, n. (used with a sing. v.) the science that deals with matter, energy, motion, and force. [1580 90; see PHYSIC, ICS] * * * I Science that deals with the structure of matter and the interactions between the fundamental constituents of… … Universalium
Physics (Aristotle) — Physics (or Physica , or Physicae Auscultationes meaning lessons ) is a key text in the philosophy of Aristotle. It inaugurates the current Andronichean order, the long series of Aristotle s physical, cosmological and biological works, and is… … Wikipedia
PHYSICS — The material presented in this entry emphasizes those contributions which were important in arriving at verified present day scientific results, rather than those that may have appeared important at the time. Unavoidably it will overlap in parts… … Encyclopedia of Judaism
Physics beyond the Standard Model — Beyond the Standard Model Standard Model … Wikipedia
basic — [[t]be͟ɪsɪk[/t]] ♦♦ 1) ADJ GRADED: usu ADJ n You use basic to describe things, activities, and principles that are very important or necessary, and on which others depend. One of the most basic requirements for any form of angling is a sharp hook … English dictionary
Basic hypergeometric series — In mathematics, the basic hypergeometric series, also sometimes called the hypergeometric q series, are q analog generalizations of ordinary hypergeometric series. Two basic series are commonly defined, the unilateral basic hypergeometric series … Wikipedia
Physics of skiing — The Physics of skiing refers to the analysis of forces applied on a skier using the discipline of physics. A common question any analytical thinker might ask is: Do big people go faster? . The answer is yes, to an extent. This is because heavier… … Wikipedia
Basic Education High School No. 1 Dagon — Dagon 1 High School အ.ထ.က. (၁) ဒဂုံ Location 57 Alanpya Pagoda Road Dagon 11191 … Wikipedia
