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1 mitverschulden
v/t (trennb., hat) be partly responsible for* * *Mịt|ver|schul|denntihn trifft ein Mitverschulden an diesem Vorfall — he was partially or partly to blame for this incident
* * *Mit·ver·schul·denihr konnte kein \Mitverschulden nachgewiesen werden it wasn't possible to prove that she was partially to blame* * *mitverschulden v/t (trennb, hat) be partly responsible for -
2 Mitverschulden
v/t (trennb., hat) be partly responsible for* * *Mịt|ver|schul|denntihn trifft ein Mitverschulden an diesem Vorfall — he was partially or partly to blame for this incident
* * *Mit·ver·schul·denihr konnte kein \Mitverschulden nachgewiesen werden it wasn't possible to prove that she was partially to blame* * * -
3 moitié
moitié [mwatje]feminine noun• quelle est la moitié de 40 ? what is half of 40?• moitié anglais, moitié français half-English, half-French• réduire de moitié [+ trajet, production, coût] to reduce by half* * *mwatje1) gén halfla peinture, c'est la moitié de ma vie — half of my life is devoted to painting
dormir à moitié — (colloq) to be half asleep
2) (colloq) ( époux)ma moitié — my better half (colloq)
* * *mwatje1. nf1) (partie d'un tout) halfOn a mangé une moitié de poulet. — We ate half a chicken.
une bonne moitié — a good half, just over half
Cette part est trop grosse. La moitié suffira. — This portion is too big. Half would be enough.
la moitié de — half, half of
Il a mangé la moitié du gâteau à lui seul. — He ate half the cake all by himself.
2) (limite)Elle est partie à la moitié du film. — She left halfway through the film.
Elle est partie à la moitié. — She left halfway through.
3) (= épouse)sa moitié — his other half, his better half
à moitié (avec un verbe) — half, (avec un adjectif) half-
Il l'a terminé à moitié. — He half finished it.
C'était à moitié construit. — It was half-built.
Ton verre est encore à moitié plein. — Your glass is still half-full.
Il fait toujours les choses à moitié. — He never finishes anything.
Ce sac était moitié prix. — This bag was half-price.
2. advmoitié plus long — half as long again, longer by half
2)On partage moitié moitié, d'accord? — We'll go halves, OK?
* * *moitié nf1 gén half; la moitié de qch half of sth; partager qch en deux moitiés to divide sth into two halves; une moitié rouge et l'autre bleue one half red and the other blue; la première moitié du mois the first half of the month; il en a mangé plus/moins de la moitié he ate more/less than half of it ou them; la moitié d'entre eux half of them; la peinture, c'est la moitié de ma vie half of my life is devoted to painting; à moitié vide/fou/convaincu half empty/crazy/convinced; dormir à moitié○ to be half asleep; vivre moitié à Paris, moitié à Nice to spend half one's time in Paris and half in Nice; dépenser moitié moins d'argent to spend half as much money ou half the money; vendre à moitié prix to sell at half-price; articles à moitié prix half-price goods; s'arrêter à la moitié to stop halfway through; à moitié cassé damaged; raccourcir de moitié to shorten by half; trop long de moitié too long by half; c'est plus large/cher de moitié it's half as wide/expensive again; je n'y crois qu'à moitié I don't entirely believe it; il n'était pas qu'à moitié ivre○! he wasn't half drunk○!; ne pas faire les choses à moitié not to do things by halves; il fait toujours les choses à moitié he never does anything properly; être pour moitié dans qch to be instrumental in sth; partager les gains par moitié to split the profits; ⇒ pardonner;[mwatje] nom féminin1. [part] halfune moitié de ou la moitié d'un poulet half a chickennous ferons la moitié du trajet ou chemin ensemble we'll do half the journey togetherpartager quelque chose en deux moitiés to divide something in half ou into (two) halves, to halve somethingje suis moitié Français, moitié Canadien I'm half French, half Canadian2. (familier & humoristique) [épouse]sa/ma (tendre) moitié his/my better half————————à moitié locution adverbialele travail n'est fait qu'à moitié only half the work's been done, the work's only half doneà moitié chemin locution adverbiale————————de moitié locution adverbialeréduire quelque chose de moitié to reduce something by half, to halve somethingl'inflation a diminué de moitié inflation has been halved ou cut by half————————par la moitié locution adverbialethrough ou down the middle————————par moitié locution adverbiale————————pour moitié locution adverbialetu es pour moitié dans son échec you're half ou partly responsible for his failure -
4 to do with
تَكون لهُ عُلاقَهI never had anything to do with the neighbours.
2) ( with have) to be involved in, especially to be (partly) responsible for:مُتَوَرِّط، له عُلاقَه، لهُ ضِلْعDid you have anything to do with her death?
يكون له صِله أو عُلاقَهHas this decision anything to do with what I said yesterday?
له اهميّه، يَخُصThis letter is/has to do with Bill's plans for the summer.
I'm sorry, but that question has nothing to do with me
يَهُمُّ، يَخُصُّWhat has that (got) to do with him?
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5 Huygens, Christiaan
SUBJECT AREA: Horology[br]b. 14 April 1629 The Hague, the Netherlandsd. 8 June 1695 The Hague, the Netherlands[br]Dutch scientist who was responsible for two of the greatest advances in horology: the successful application of both the pendulum to the clock and the balance spring to the watch.[br]Huygens was born into a cultured and privileged class. His father, Constantijn, was a poet and statesman who had wide interests. Constantijn exerted a strong influence on his son, who was educated at home until he reached the age of 16. Christiaan studied law and mathematics at Ley den University from 1645 to 1647, and continued his studies at the Collegium Arausiacum in Breda until 1649. He then lived at The Hague, where he had the means to devote his time entirely to study. In 1666 he became a Member of the Académie des Sciences in Paris and settled there until his return to The Hague in 1681. He also had a close relationship with the Royal Society and visited London on three occasions, meeting Newton on his last visit in 1689. Huygens had a wide range of interests and made significant contributions in mathematics, astronomy, optics and mechanics. He also made technical advances in optical instruments and horology.Despite the efforts of Burgi there had been no significant improvement in the performance of ordinary clocks and watches from their inception to Huygens's time, as they were controlled by foliots or balances which had no natural period of oscillation. The pendulum appeared to offer a means of improvement as it had a natural period of oscillation that was almost independent of amplitude. Galileo Galilei had already pioneered the use of a freely suspended pendulum for timing events, but it was by no means obvious how it could be kept swinging and used to control a clock. Towards the end of his life Galileo described such a. mechanism to his son Vincenzio, who constructed a model after his father's death, although it was not completed when he himself died in 1642. This model appears to have been copied in Italy, but it had little influence on horology, partly because of the circumstances in which it was produced and possibly also because it differed radically from clocks of that period. The crucial event occurred on Christmas Day 1656 when Huygens, quite independently, succeeded in adapting an existing spring-driven table clock so that it was not only controlled by a pendulum but also kept it swinging. In the following year he was granted a privilege or patent for this clock, and several were made by the clockmaker Salomon Coster of The Hague. The use of the pendulum produced a dramatic improvement in timekeeping, reducing the daily error from minutes to seconds, but Huygens was aware that the pendulum was not truly isochronous. This error was magnified by the use of the existing verge escapement, which made the pendulum swing through a large arc. He overcame this defect very elegantly by fitting cheeks at the pendulum suspension point, progressively reducing the effective length of the pendulum as the amplitude increased. Initially the cheeks were shaped empirically, but he was later able to show that they should have a cycloidal shape. The cheeks were not adopted universally because they introduced other defects, and the problem was eventually solved more prosaically by way of new escapements which reduced the swing of the pendulum. Huygens's clocks had another innovatory feature: maintaining power, which kept the clock going while it was being wound.Pendulums could not be used for portable timepieces, which continued to use balances despite their deficiencies. Robert Hooke was probably the first to apply a spring to the balance, but his efforts were not successful. From his work on the pendulum Huygens was well aware of the conditions necessary for isochronism in a vibrating system, and in January 1675, with a flash of inspiration, he realized that this could be achieved by controlling the oscillations of the balance with a spiral spring, an arrangement that is still used in mechanical watches. The first model was made for Huygens in Paris by the clockmaker Isaac Thuret, who attempted to appropriate the invention and patent it himself. Huygens had for many years been trying unsuccessfully to adapt the pendulum clock for use at sea (in order to determine longitude), and he hoped that a balance-spring timekeeper might be better suited for this purpose. However, he was disillusioned as its timekeeping proved to be much more susceptible to changes in temperature than that of the pendulum clock.[br]Principal Honours and DistinctionsFRS 1663. Member of the Académie Royale des Sciences 1666.BibliographyFor his complete works, see Oeuvres complètes de Christian Huygens, 1888–1950, 22 vols, The Hague.1658, Horologium, The Hague; repub., 1970, trans. E.L.Edwardes, AntiquarianHorology 7:35–55 (describes the pendulum clock).1673, Horologium Oscillatorium, Paris; repub., 1986, The Pendulum Clock or Demonstrations Concerning the Motion ofPendula as Applied to Clocks, trans.R.J.Blackwell, Ames.The balance spring watch was first described in Journal des Sçavans 25 February 1675, and translated in Philosophical Transactions of the Royal Society (1675) 4:272–3.Further ReadingH.J.M.Bos, 1972, Dictionary of Scientific Biography, ed. C.C.Gillispie, Vol. 6, New York, pp. 597–613 (for a fuller account of his life and scientific work, but note the incorrect date of his death).R.Plomp, 1979, Spring-Driven Dutch Pendulum Clocks, 1657–1710, Schiedam (describes Huygens's application of the pendulum to the clock).S.A.Bedini, 1991, The Pulse of Time, Florence (describes Galileo's contribution of the pendulum to the clock).J.H.Leopold, 1982, "L"Invention par Christiaan Huygens du ressort spiral réglant pour les montres', Huygens et la France, Paris, pp. 154–7 (describes the application of the balance spring to the watch).A.R.Hall, 1978, "Horology and criticism", Studia Copernica 16:261–81 (discusses Hooke's contribution).DV -
6 Leonardo da Vinci
[br]b. 15 April 1452 Vinci, near Florence, Italy,d. 2 May 1519 St Cloux, near Amboise, France.[br]Italian scientist, engineer, inventor and artist.[br]Leonardo was the illegitimate son of a Florentine lawyer. His first sixteen years were spent with the lawyer's family in the rural surroundings of Vinci, which aroused in him a lifelong love of nature and an insatiable curiosity in it. He received little formal education but extended his knowledge through private reading. That gave him only a smattering of Latin, a deficiency that was to be a hindrance throughout his active life. At sixteen he was apprenticed in the studio of Andrea del Verrochio in Florence, where he received a training not only in art but in a wide variety of crafts and technical arts.In 1482 Leonardo went to Milan, where he sought and obtained employment with Ludovico Sforza, later Duke of Milan, partly to sculpt a massive equestrian statue of Ludovico but the work never progressed beyond the full-scale model stage. He did, however, complete the painting which became known as the Virgin of the Rocks and in 1497 his greatest artistic achievement, The Last Supper, commissioned jointly by Ludovico and the friars of Santa Maria della Grazie and painted on the wall of the monastery's refectory. Leonardo was responsible for the court pageants and also devised a system of irrigation to supply water to the plains of Lombardy. In 1499 the French army entered Milan and deposed Leonardo's employer. Leonardo departed and, after a brief visit to Mantua, returned to Florence, where for a time he was employed as architect and engineer to Cesare Borgia, Duke of Romagna. Around 1504 he completed another celebrated work, the Mona Lisa.In 1506 Leonardo began his second sojourn in Milan, this time in the service of King Louis XII of France, who appointed him "painter and engineer". In 1513 Leonardo left for Rome in the company of his pupil Francesco Melzi, but his time there was unproductive and he found himself out of touch with the younger artists active there, Michelangelo above all. In 1516 he accepted with relief an invitation from King François I of France to reside at the small château of St Cloux in the royal domain of Amboise. With the pension granted by François, Leonardo lived out his remaining years in tranquility at St Cloux.Leonardo's career can hardly be regarded as a success or worthy of such a towering genius. For centuries he was known only for the handful of artistic works that he managed to complete and have survived more or less intact. His main activity remained hidden until the nineteenth and twentieth centuries, during which the contents of his notebooks were gradually revealed. It became evident that Leonardo was one of the greatest scientific investigators and inventors in the history of civilization. Throughout his working life he extended a searching curiosity over an extraordinarily wide range of subjects. The notes show careful investigation of questions of mechanical and civil engineering, such as power transmission by means of pulleys and also a form of chain belting. The notebooks record many devices, such as machines for grinding and polishing lenses, a lathe operated by treadle-crank, a rolling mill with conical rollers and a spinning machine with pinion and yard divider. Leonardo made an exhaustive study of the flight of birds, with a view to designing a flying machine, which obsessed him for many years.Leonardo recorded his observations and conclusions, together with many ingenious inventions, on thousands of pages of manuscript notes, sketches and drawings. There are occasional indications that he had in mind the publication of portions of the notes in a coherent form, but he never diverted his energy into putting them in order; instead, he went on making notes. As a result, Leonardo's impact on the development of science and technology was virtually nil. Even if his notebooks had been copied and circulated, there were daunting impediments to their understanding. Leonardo was left-handed and wrote in mirror-writing: that is, in reverse from right to left. He also used his own abbreviations and no punctuation.At his death Leonardo bequeathed his entire output of notes to his friend and companion Francesco Melzi, who kept them safe until his own death in 1570. Melzi left the collection in turn to his son Orazio, whose lack of interest in the arts and sciences resulted in a sad period of dispersal which endangered their survival, but in 1636 the bulk of them, in thirteen volumes, were assembled and donated to the Ambrosian Library in Milan. These include a large volume of notes and drawings compiled from the various portions of the notebooks and is now known as the Codex Atlanticus. There they stayed, forgotten and ignored, until 1796, when Napoleon's marauding army overran Italy and art and literary works, including the thirteen volumes of Leonardo's notebooks, were pillaged and taken to Paris. After the war in 1815, the French government agreed to return them but only the Codex Atlanticus found its way back to Milan; the rest remained in Paris. The appendix to one notebook, dealing with the flight of birds, was later regarded as of sufficient importance to stand on its own. Four small collections reached Britain at various times during the seventeenth and eighteenth centuries; of these, the volume in the Royal Collection at Windsor Castle is notable for its magnificent series of anatomical drawings. Other collections include the Codex Leicester and Codex Arundel in the British Museum in London, and the Madrid Codices in Spain.Towards the end of the nineteenth century, Leonardo's true stature as scientist, engineer and inventor began to emerge, particularly with the publication of transcriptions and translations of his notebooks. The volumes in Paris appeared in 1881–97 and the Codex Atlanticus was published in Milan between 1894 and 1904.[br]Principal Honours and Distinctions"Premier peintre, architecte et mécanicien du Roi" to King François I of France, 1516.Further ReadingE.MacCurdy, 1939, The Notebooks of Leonardo da Vinci, 2 vols, London; 2nd edn, 1956, London (the most extensive selection of the notes, with an English translation).G.Vasari (trans. G.Bull), 1965, Lives of the Artists, London: Penguin, pp. 255–271.C.Gibbs-Smith, 1978, The Inventions of Leonardo da Vinci, Oxford: Phaidon. L.H.Heydenreich, Dibner and L. Reti, 1981, Leonardo the Inventor, London: Hutchinson.I.B.Hart, 1961, The World of Leonardo da Vinci, London: Macdonald.LRD / IMcN -
7 Raky, Anton
SUBJECT AREA: Mining and extraction technology[br]b. 5 January 1868 Seelenberg, Taunus, Germanyd. 22 August 1943 Berlin, Germany[br]German inventor of rapid percussion drilling, entrepreneur in the exploration business.[br]While apprenticed at the drilling company of E. Przibilla, Raky already called attention by his reflections towards developing drilling methods and improving tools. Working as a drilling engineer in Alsace, he was extraordinarily successful in applying an entire new hydraulic boring system in which the rod was directly connected to the chisel. This apparatus, driven by steam, allowed extremely rapid percussions with very low lift.With some improvements, his boring rig drilled deep holes at high speed and at least doubled the efficiency of the methods hitherto used. His machine, which was also more reliable, was secured by a patent in 1895. With borrowed capital, he founded the Internationale Bohrgesellschaft in Strasbourg in the same year, and he began a career in the international exploration business that was unequalled as well as breathtaking. Until 1907 the total depth of the drillings carried out by the company was 1,000 km.Raky's rapid drilling was unrivalled and predominant until improved rotary drilling took over. His commercial sense in exploiting the technical advantages of his invention by combining drilling with producing the devices in his own factory at Erkelenz, which later became the headquarters of the company, and in speculating on the concessions for the explored deposits made him by far superior to all of his competitors, who were provoked into contests which they generally lost. His flourishing company carried out drilling in many parts of the world; he became the initiator of the Romanian oil industry and his extraordinary activities in exploring potash and coal deposits in different parts of Germany, especially in the Ruhr district, provoked the government in 1905 into stopping granting claims to private companies. Two years later, he was forced to withdraw from his holding company because of his restless and eccentric character. He turned to Russia and, during the First World War, he was responsible for the reconstruction of the destroyed Romanian oilfields. Thereafter, partly financed by mining companies, he continued explorations in several European countries, and in Germany he was pioneering again with exploring oilfields, iron ore and lignite deposits which later grew in economic value. Similar to Glenck a generation before, he was a daring entrepreneur who took many risks and opened new avenues of exploration, and he was constantly having to cope with a weak financial position, selling concessions and shares, most of them to Preussag and Wintershall; however, this could not prevent his business from collapse in 1932. He finally gave up drilling in 1936 and died a poor man.[br]Principal Honours and DistinctionsDr-Ing. (Hon.) Bergakademie Clausthal 1921.Further ReadingG.P.R.Martin, 1967, "Hundert Jahre Anton Raky", Erdöl-Erdgas-Zeitschrift, 83:416–24 (a detailed description).D.Hoffmann, 1959, 150 Jahre Tiefbohrungen in Deutschland, Vienna and Hamburg: 32– 4 (an evaluation of his technologial developments).WK
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