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  • 101 plam|a

    f 1. (zabrudzenie) stain, mark; (rozmazana) smear, smudge
    - tłusta plama a grease stain a. spot
    - uporczywa plama a stubborn stain
    - plama z krwi a bloodstain
    - plama po owocach/kawie a fruit/a coffee stain
    - plama na obrusie/sukience a stain on a tablecloth/a dress
    - po winie zostanie plama wine will leave a stain
    - czy te plamy się spiorą? will these stains come out in the wash?
    - usunąć a. wywabić plamę z koszuli to remove a stain from a shirt
    - wywabiacz plam spot a. stain remover
    - plama ropy naftowej an oil slick
    2. (na skórze) spot, blotch
    - plamy na twarzy/szyi spots a. blotches on sb’s face/neck
    - pokryć się czerwonymi plamami to come out a. break out in spots
    - po truskawkach dostaję plam na twarzy strawberries bring me out in spots a. make me break out in spots
    - pokryty plamami blotchy, spotty
    3. (miejsce wyodrębniające się z tła) patch
    - plama czerwieni/słońca a patch of red/sun(light)
    - kolorowa plama na tle szarości zimowego ogrodu a splash of colour against the greys of a winter garden
    - rozmyta plama zieleni a blur a. blurred patch of green
    - słońce kładło się jasną plamą na jej włosach a patch of sunlight lit (up) her hair
    - przed oczami migotały a. latały jej czerwone plamy she saw red spots before her eyes
    4. przen. (hańba) blot, stain
    - plama na honorze a blot on the escutcheon
    - plama na sumieniu/reputacji a blot a. stain on sb’s conscience/reputation
    - zmazał plamę na honorze rodziny he wiped out the stain tarnishing the honour of the family
    5. Anat. macula
    plamy na Słońcu a. słoneczne Astron. sunspots
    - plamy opadowe Med. post-mortem lividity, livor mortis
    - plamy wątrobowe Med. liver spots
    biała plama Druk. a friar; (tajemnica) a blank page, a missing piece
    - książka zawiera 30 stron białych plam there are thirty blank pages in the book
    - dorzecze Konga było białą plamą dla podróżników the Congo basin was uncharted territory
    - próba wymazania białych plam w historii Rosji an attempt at filling in the missing pages in Russian history
    - jego biografia ma mnóstwo białych plam there are many unknowns a. missing pieces in his biography
    - dać plamę pot. (skompromitować się) to blot one’s copybook pot.; (popełnić gafę) to drop a brick a. clanger pot.
    - dał plamę na ostatnim pytaniu egzaminacyjnym he came a cropper a. he messed up on the last question in the exam pot.
    - szukać plamy a. plam na słońcu to nit-pick pot.
    - szukanie plamy na słońcu nit-picking pot.; fault-finding

    The New English-Polish, Polish-English Kościuszko foundation dictionary > plam|a

  • 102 Bickford, William

    [br]
    b. 1774 Devonshire, England
    d. 1834 Tuckingmill, Cornwall, England
    [br]
    English leather merchant, inventor of the safety fuse.
    [br]
    Having tried in vain to make his living as a currier in Truro, Cornwall, he set up as a leather merchant in Tuckingmill and became aware of the high casualty rates suffered by local tin-miners in shot-firing accidents. He therefore started attempts to discover a safe means of igniting charges, and came up with a form of safety fuse that made the operation of blasting much less hazardous. It was patented in 1831 and consisted of a cable of jute and string containing a thin core of powder; it provided a dependable means for conveying the flame to the charge so that the danger of hang fires was almost eliminated. Its accurate and consistent timing allowed the firing of several holes at a time without the fusing of the last being destroyed by the blast from the first. By 1840, a gutta-percha fuse had been developed which could be used in wet conditions and was an improvement until the use of dynamite for shot-firing.
    Accounts of the invention, after it had been described in the Report from the Select Committee on Accidents in Mines (1835, London) were widespread in various foreign mining journals, and in the 1840s factories were set up in different mining areas on the European continent, in America and in Australia. Bickford himself founded a firm at Tuckingmill in the year that he came up with his invention which was later controlled by his descendants until it finally merged with Imperial Chemical Industries (ICI) after the First World War.
    [br]
    Further Reading
    F.Heise, 1904, Sprengstoffe und Zündung der Sprengschüsse, Berlin (provides a detailed description of the development).
    W.J.Reader, 1970, Imperial Chemical Industries. A History, Vol. I, London: Oxford University Press (throws light on the tight international connections of Bickford's firm with Nobel industries).
    WK

    Biographical history of technology > Bickford, William

  • 103 Chevreul, Michel Eugène

    SUBJECT AREA: Chemical technology
    [br]
    b. 31 August 1786 Angers, France
    d. 9 April 1889 Paris, France
    [br]
    French chemist who made significant research contributions to scientific knowledge in the field of colour contrast and standardization and demonstrated the chemical nature of fats.
    [br]
    Between 1811 and 1823, Chevreul's work on the fundamental basis of fats led to a great improvement in both the quality of wax candles and in the fats used in the manufacture of soap, and this had considerable advantageous implications for domestic life. The publication of his researches provided the first specific account of the nature of the fats used in the manufacture of soap. His work also led to the development and manufacture of the stearine candle. Stearine was first described by Chevreul in 1814 and was produced by heating glycerine with stearic acid. As early as 1825 M.Gay Lussac obtained a patent in England for making candles from a similar substance. The stearine candle was much more satisfactory than earlier products; it was firmer and gave a brighter light without any accompanying odour. Chevreul became Director of Dyeing in 1824 at the Royal Manufactory of Gobelins, the French national tapestry firm. While there, he carried out research into 1,442 different shades of colour. From 1830 he occupied the Chair of Chemistry at the Muséum d'Histoire Naturelle in Paris.
    [br]
    Further Reading
    G.Bouchard, 1932, Chevreul (biography).
    Albert da Costa, 1962, Michel Eugène Chevreul: Pioneer of Organic Chemistry', Wisconsin: Dept of History, University of Wisconsin.
    DY

    Biographical history of technology > Chevreul, Michel Eugène

  • 104 Claudet, Antoine François Jean

    [br]
    b. 12 August 1797 France
    d. 27 December 1867 London, England
    [br]
    French pioneer photographer and photographic inventor in England.
    [br]
    He began his working life in banking but soon went into glassmaking and in 1829 he moved to London to open a glass warehouse. On hearing of the first practicable photographic processes in 1834, Claudet visited Paris, where he received instruction in the daguerreotype process from the inventor Daguerre, and purchased a licence to operate in England. On returning to London he began to sell daguerreotype views of Paris and Rome, but was soon taking and selling his own views of London. At this time exposures could take as long as thirty minutes and portraiture from life was impracticable. Claudet was fascinated by the possibilities of the daguerreotype and embarked on experiments to improve the process. In 1841 he published details of an accelerated process and took out a patent proposing the use of flat painted backgrounds and a red light in dark-rooms. In June of that year Claudet opened the second daguerreotype portrait studio in London, just three months after his rival, Richard Beard. He took stereoscopic photographs for Wheatstone as early as 1842, although it was not until the 1850s that stereoscopy became a major interest. He suggested and patented several improvements to viewers derived from Brewster's pattern.
    Claudet was also one of the first photographers to practise professionally Talbot's calotype process. He became a personal friend of Talbot, one of the few from whom the inventor was prepared to accept advice. Claudet died suddenly in London following an accident that occurred when he was alighting from an omnibus. A memoir produced shortly after his death lists over forty scientific papers relating to his researches into photography.
    [br]
    Principal Honours and Distinctions
    FRS 1853.
    Further Reading
    "The late M.Claudet", 1868, Photographic News 12:3 (obituary).
    "A.Claudet, FRS, a memoir", 1968, (reprinted from The Scientific Review), London: British Association (a fulsome but valuable Victorian view of Claudet).
    H.Gernsheim and A.Gernsheim, 1969, The History of Photography, rev. edn, London (a comprehensive account of Claudet's daguerreotype work).
    H.J.P.Arnold, 1977, William Henry Fox Talbot, London (provides details of Claudet's relationship with Talbot).
    JW

    Biographical history of technology > Claudet, Antoine François Jean

  • 105 Cros, Charles

    [br]
    b. 1842 France
    d. 1888
    [br]
    French doctor, painter and man of letters who pioneered research into colour photography.
    [br]
    A man of considerable intellect, Cros occupied himself with studies of topics as diverse as Sanskrit and the synthesis of precious stones. He was in particular interested in the possibility of colour photography, and deposited an account of his theories in a sealed envelope with the Académie des Sciences on 2 December 1867, with instructions that it should be opened in 1876. Learning of a forthcoming presentation on colour photography by Ducos du Hauron at the Société Française de Photographie, he arranged for the contents of his communication to be published on 25 February 1869 in Les Mondes. At the Société's meeting on 7 May 1869, Cros's letter was read and samples of colour photography from Ducos du Hauron were shown. Both had arrived at similar conclusions: that colour photography was possible with the analysis of colours using negatives exposed through red, green and blue filters, as demonstrated by Clerk Maxwell in 1861. These records could be reproduced by combining positive images produced in blue-green, magenta and yellow pigments or dyes. Cros and Ducos du Hauron had discovered the principle of subtractive colour photography, which is used in the late twentieth century. In 1878 Cros designed the Chromometre, a device for measuring colours by mixing red, green and blue light, and described the device in a paper to the Société Française de Photographie on 10 January 1879. With suitable modification, the device could be used as a viewer for colour photographs, combining red, green and blue positives. In 1880 he patented the principle of imbibition printing, in which dye taken up by a gelatine relief image could be transferred to another support. This principle, which he called hydrotypie, readily made possible the production of three-colour subtractive photographic prints.
    [br]
    Further Reading
    J.S.Friedman, 1944, History of Colour Photography, Boston. Gert Koshofer, 1981, Farbefotografie, Vol. I, Munich.
    BC

    Biographical history of technology > Cros, Charles

  • 106 Cruickshank, William

    SUBJECT AREA: Electricity
    [br]
    d. 1810/11 Scotland
    [br]
    Scottish chemist and surgeon, inventor of a trough battery developed from Volta's pile.
    [br]
    Cruickshank graduated MA from King's College, Aberdeen, in 1765, and later gained a Diploma of the Royal College of Surgeons. When chemistry was introduced in 1788 into the course at the Royal Military Academy in Woolwich, Cruickshank became a member of staff, serving as Assistant to Dr A.Crawford, the Lecturer in Chemistry. Upon Crawford's death in 1796 Cruickshank succeeded him as Lecturer and held the post until his retirement due to ill health in 1804. He also held the senior posts of Chemist to the Ordnance at Woolwich and Surgeon to the Ordnance Medical Department. He should not be confused with William Cumberland Cruickshank (1745–1800), who was also a surgeon and Fellow of the Royal Society. In 1801, shortly after Volta's announcement of his pile, Cruickshank built a voltaic pile to facilitate his experiments in electrochemistry. The pile had zinc and silver plates about 1½ in2 (10 cm2) with interposed papers moistened with ammonium chloride. Dissatisfied with this arrangement, Cruickshank devised a horizontal trough battery in which a wooden box was divided into cells, each holding a pair of zinc and silver or zinc and copper plates. Charged with a dilute solution of ammonium chloride, the battery, which was typically of sixty cells, was found to be more convenient to use than a pile and it, or a derivative, was generally adopted for electrochemical experiments including tose of Humphrey Davy during the early years of the nineteenth century.
    [br]
    Principal Honours and Distinctions
    FRS 1802.
    Bibliography
    1801, article in Nicholsons Journal 4:187–91 (describes Cruickshank's original pile). 1801, article in Nicholsons Journal 4:245–64 (describes his trough battery).
    Further Reading
    B.Bowers, 1982, A History of Electric Light and Power, London (a short account). A.Courts, 1959, "William Cruickshank", Annals of Science 15:121–33 GW

    Biographical history of technology > Cruickshank, William

  • 107 Daft, Leo

    [br]
    b. 13 November 1843 Birmingham, England
    d. 28 March 1922
    [br]
    English electrical engineer, pioneer of electric-power generation and electric railways in the USA.
    [br]
    Leo Daft, son of a British civil engineer, studied electricity and emigrated to the USA in 1866. After various occupations including running a photographic studio, he joined in 1879 the New York Electric Light Company, which was soon merged into the Daft Electric Company. This company developed electrically powered machinery and built electric-power plants. In 1883 Daft built an electric locomotive called Ampere for the Saratoga \& Mount McGregor Railroad. This is said to have been the first electric main-line locomotive for standard gauge. It collected current from a central rail, had an output of 12 hp (9 kW) and hauled 10 tons at speeds up to 9 mph (14.5 km/h). Two years later Daft made a much improved locomotive for the New York Elevated Railway, the Benjamin Franklin, which drew current at 250 volts from a central rail and had two 48 in. (122 cm)-diameter driving wheels and two 33 in. (84 cm)-diameter trailing wheels. Re-equipped in 1888 with four driving wheels and a 125 hp (93 kW) motor, this could haul an eight-car train at 10 mph (16 km/h). Meanwhile, in 1884, Daft's company had manufactured all the electrical apparatus for the Massachusetts Electric Power Company, the first instance of a complete central station to generate and distribute electricity for power on a commercial scale. In 1885 it electrified a branch of the Baltimore Union Passenger Railway, the first electrically operated railway in the USA. Subsequently Daft invented a process for vulcanizing rubber onto metal that came into general use. He never became an American citizen.
    [br]
    Further Reading
    Dictionary of American Biography.
    F.J.G.Haut, 1969, The History of the Electric Locomotive, London: George Allen \& Unwin.
    PJGR

    Biographical history of technology > Daft, Leo

  • 108 Fizeau, Armand Hippolyte Louis

    [br]
    b. 23 September 1819 Paris, France
    d. 18 September 1896 Nanteuil-le-Haudouin, France
    [br]
    French physicist who introduced early improvements to the daguerreotype process.
    [br]
    Fizeau's interest in photography was comparatively brief, but during this period he was at the forefront of French attempts to explore and exploit the potential of the recently announced daguerreotype process (see Daguerre). Fizeau is best remembered for his introduction in August 1840 of the practice of gold-toning daguerreotypes. This improvement not only helped protect the delicate surface of the plate from abrasion and tarnishing, but also enhanced the quality of the image. The technique was not patented and was immediately adopted by all daguerreotypists. Between 1839 and 1841, in association with Alfred Donné, Fizeau conducted experiments with the aim of converting daguerreotypes into printing plates. Prints from two of his plates were published in 1842, but the technique was never widely practised. In association with J.B.Léon Foucault, Fizeau discovered the reciprocity failure of daguerreotypes, and the same partnership produced what were probably the first daguerreotypes of the sun. Fizeau is best known in physics for making the first accurate determination of the speed of light, in 1849.
    [br]
    Further Reading
    W.H.Thornthwaite, 1843, Photographic Manipulation, London (provides details of Fizeau's gold-toning process).
    H.Gernsheim and A.Gernsheim, 1969, The History of Photography, rev. edn, London (a more general account of Fizeau's contributions to photography).
    JW

    Biographical history of technology > Fizeau, Armand Hippolyte Louis

  • 109 Jacobi, Moritz Hermann von

    SUBJECT AREA: Electricity
    [br]
    b. 21 September 1801 Potsdam, Germany
    d. 27 February 1874 St Petersburg, Russia
    [br]
    German scientist who developed one of the first practical electric motors.
    [br]
    After studying architecture at Göttingen University, Jacobi turned his attention to physics and chemistry. In 1835 he was appointed a professor of civil engineering at the University of Dorpat (which later assumed the Estonian name of Tartu). Later, moving to St Petersburg, he became a member of the Imperial Academy of Sciences and commenced research on electricity and its practical applications. In December 1834 Jacobi presented a paper to the Academy of Sciences in Paris in which he stated that he had obtained rotation by electromagnetic methods in May of that year. Tsar Nicholas of Russia gave him a grant to prove that his electric motor had a practical application. Jacobi had a boat constructed that measured 28 ft in length and was propelled by paddles connected to an electric motor of his own design. Powered by Grove cells, it carried about fourteen passengers at a speed of almost 3 mph (5 km/h) on the River Neva. The weight of and possibly the fumes from the batteries contributed to the abandonment of the project. In 1839 Jacobi introduced electrotyping, i.e. the reproduction of forms by electrodeposition, which was one of the first commercial applications of electricity. In 1840 he reported the results of his investigations into the power of the electromagnet as a function of various parameters to the British Association.
    [br]
    Principal Honours and Distinctions
    Member, Imperial Academy of Sciences, St Petersburg, 1847.
    Bibliography
    Jacobi's papers are listed in Catalogue of Scientific Papers, 1868, Vol. III, London: Royal Society, pp. 517–18.
    1837, Annals of Electricity 1:408–15 and 419–44 (describes his motor).
    Further Reading
    E.H.Huntress, 1951, in Proceedings of the American Academy of Arts and Sciences 79: 22–3 (a short biography).
    B.Bowers, 1982, A History of Electric Light and Power, London.
    GW

    Biographical history of technology > Jacobi, Moritz Hermann von

  • 110 Waterhouse, Major-General James

    [br]
    b. 1841
    d. 28 September 1922
    [br]
    English military man and photographer.
    [br]
    Waterhouse spent most of his career in the Indian Army. In 1861–2 he was commissioned to photograph the tribes of central India, and over the next few years visited many parts of the subcontinent. In November 1866, after working for five months in the Great Trigonometrical Survey learning the process of photozincography (an early photomechanical process used chiefly for map making), he took charge of photographic operations at the Surveyor-General's office in Calcutta, a post he held until retiring in 1897. During this time he developed many improvements in the photomechanical methods used for reproduction in his office. He also experimented with methods of colour-sensitizing photographic materials, experimenting with eosine dye and publishing in 1875 the fact that this made silver halide salts sensitive to yellow light. He also discovered that gelatine dry plates could be made sensitive to red and infra-red illumination by treatment with alizarine blue solution.
    He continued his researches upon his retirement and return to England in 1897, and made a special study of the early history of the photographic process. His work on dye sensitizing brought him the Progress Medal of the Royal Photographic Society, and the Vienna Photographic Society awarded him the Voigtländer Medal for researches in scientific photography. One invention often erroneously attributed to him is the Waterhouse stop, the use of a series of perforated plates as a means of adjusting the aperture of a photographic lens. This was described in 1858 by a John Waterhouse, being his only contribution to photography.
    BC

    Biographical history of technology > Waterhouse, Major-General James

  • 111 Wilde, Henry

    SUBJECT AREA: Electricity
    [br]
    b. 1833 Manchester, England
    d. 28 March 1919 Alderley Edge, Cheshire, England
    [br]
    English inventor and pioneer manufacturer of electrical generators.
    [br]
    After completing a mechanical engineering apprenticeship Wilde commenced in business as a telegraph and lightning conductor specialist in Lancashire. Several years spent on the design of an alphabetic telegraph resulted in a number of patents. In 1864 he secured a patent for an electromagnetic generator which gave alternating current from a shuttle-wound armature, the field being excited by a small direct-current magneto. Wilde's invention was described to the Royal Society by Faraday in March 1866. When demonstrated at the Paris Exhibition of 1867, Wilde's machine produced sufficient power to maintain an arc light. The small size of the generator provided a contrast to the large and heavy magnetoelectric machines also exhibited. He discovered, by experiment, that alternators in synchronism could be connected in parallel. At about the same time John Hopkinson arrived at the same conclusions on theoretical grounds.
    Between 1866 and 1877 he sold ninety-four machines with commutators for electroplating purposes, a number being purchased by Elkingtons of Birmingham. He also supplied generators for the first use of electric searchlights on battleships. In his early experiments Wilde was extremely close to the discovery of true self-excitation from remnant magnetism, a principle which he was to discover in 1867 on machines intended for electroplating. His patents proved to be financially successful and he retired from business in 1884. During the remaining thirty-five years of his life he published many scientific papers, turning from experimental work to philosophical and, finally, theological matters. His record as an inventor established him as a pioneer of electrical engineering, but his lack of scientific training was to restrict his later contributions.
    [br]
    Principal Honours and Distinctions
    FRS 1886.
    Bibliography
    1 December 1863, British patent no. 3,006 (alternator with a magneto-exciter).
    1866, Proceedings of the Royal Society 14:107–11 (first report on Wilde's experiments). 1900, autobiographical note, Journal of the Institution of Electrical Engineers 29:3–17.
    Further Reading
    W.W.Haldane Gee. 1920, biography, Memoirs, Manchester Literary and Philosophical Society 63:1–16 (a comprehensive account).
    P.Dunsheath, 1962, A History of Electrical Engineering, London: Faber \& Faber, pp. 110–12 (a short account).
    GW

    Biographical history of technology > Wilde, Henry

  • 112 Bayard, Hippolyte

    [br]
    b. 1801 Breteuil-sur-Noye, France d. 1887
    [br]
    French photographer, inventor of an early direct positive paper process.
    [br]
    Educated as a notary's clerk, Bayard began his working life in Paris in the Ministry of Finance. His interest in art led him to investigations into the chemical action of light, and he began his experiments in 1837. In May 1839 Bayard described an original photographic process which produced direct positive images on paper. It was devised independently of Talbot and before details of Daguerre's process had been published. During the same period, similar techniques were announced by other investigators and Bayard became involved in a series of priority disputes. Bayard's photographs were well received when first exhibited, and examples survive to the present day. Because the process required long exposure times it was rarely practised, but Bayard is generally credited with being an independent inventor of photography.
    [br]
    Bibliography
    1840, Comptes rendus (24 February): 337 (the first published details of Bayard's process).
    Further Reading
    H.Gernsheim and A.Gernsheim, 1969, The History of Photography, rev. edn, London.
    JW

    Biographical history of technology > Bayard, Hippolyte

  • 113 Hunt, Robert

    [br]
    b. 6 September 1807 Devonport, Devon, England
    d. 19 March 1887 England
    [br]
    English photographic pioneer and writer.
    [br]
    A chemist by training, Hunt took an early interest in photography and during the 1840s devised several original photographic processes and techniques. The properties of iron sulphate as a developing agent, widely used by wet-collodion photographers, were first described by Hunt in 1844. He was a prolific author and it was as a writer that he was most influential. In 1841 he published the first substantial English-language photographic manual, a work that was to run to six editions. Perhaps his most important work was his Researches on Light, first published in 1844, with a second edition containing considerable additional material appearing in 1854. In 1851 Hunt was appointed Professor of Mechanical Science at the Royal School of Mines in London. He was a founder member of the London (later Royal) Photographic Society in 1853.
    [br]
    Principal Honours and Distinctions
    Member of the Royal Society 1854.
    Further Reading
    C.Thomas, 1988, Views and Likenesses, Truro: Royal Institution of Cornwall (a brief account of Hunt's life and work).
    H.Gernsheim and A.Gernsheim, 1969, The History of Photography, rev. edn, London.
    JW

    Biographical history of technology > Hunt, Robert

  • 114 Ives, Herbert Eugene

    [br]
    b. 1882 USA
    d. 1953
    [br]
    American physicist find television pioneer.
    [br]
    Ives gained his PhD in physics from Johns Hopkins University, Baltimore, Maryland, and subsequently served in the US Signal Corps, eventually gaining experience in aerial photography. He then joined the Western Electric Engineering Department (later Bell Telephone Laboratories), c.1920 becoming leader of a group concerned with television-image transmission over telephone lines. In 1927, using a Nipkow disc, he demonstrated 50-line, 18 frames/sec pictures that could be displayed as either 2 in.×2 1/2 in. (5.1 cm×6.4 cm) images suitable for a "wirephone", or 2 ft ×2 1/2 ft (61 cm×76 cm) images for television viewing. Two years later, using a single-spiral disc and three separately modulated light sources, he was able to produce full-colour images.
    [br]
    Bibliography
    1915, "The transformation of colour mixture equations", Journal of the Franklin Institute 180:673.
    1923, "do—Pt II", Journal of the Franklin Institute 195–23.
    1925, "Telephone picture transmission", Transactions of the Society of Motion Picture and Television Engineers 23:82.
    1929, "Television in colour", Bell Laboratories Record 7:439.
    1930, with A.L.Johnsrul, "Television in colour by a beam-scanning method", Journal of the Optical Society of America 20:11.
    Further Reading
    J.H.Udelson, 1982, The Great Television Race: History of the Television Industry 1925– 41: University of Alabama Press.
    KF

    Biographical history of technology > Ives, Herbert Eugene

  • 115 Pixii, Antoine Hippolyte

    SUBJECT AREA: Electricity
    [br]
    b. 1808 France
    d. 1835
    [br]
    French instrument maker who devised the first machine to incorporate the basic elements of a modern electric generator.
    [br]
    Mechanical devices to transform energy from a mechanical to an electrical form followed shortly after Faraday's discovery of induction. One of the earliest was Pixii's magneto generator. Pixii had been an instrument maker to Arago and Ampère for a number of years and his machine was first announced to the Academy of Sciences in Paris in September 1832. In this hand-driven generator a permanent magnet was rotated in close proximity to two coils on soft iron cores, producing an alternating current. Subsequently Pixii adapted to a larger version of his machine a "see-saw" switch or commutator devised by Ampère, in order to obtain a unidirectional current. The machine provided a current similar to that obtained with a chemical cell and was capable of decomposing water into oxygen and hydrogen. It was the prototype of many magneto-electric machines which followed.
    [br]
    Principal Honours and Distinctions
    Academy of Sciences, Paris, Gold Medal 1832.
    Further Reading
    B.Bowers, 1982, A History of Electric Light and Power, London, pp. 70–2 (describes the development of Pixii's generator).
    C.Jackson, 1833, "Notice of the revolving electric magnet of Mr Pixii of Paris", American Journal of Science 24:146–7.
    GW

    Biographical history of technology > Pixii, Antoine Hippolyte

  • 116 Христос

    2) History: (the Galilean) Galilean
    3) Religion: Christ (= Messiah), Christus ("Christ", сокр. X.), God-Man, Light of the World, Lord Jesus, Messiah, Son of Man, bridegroom, the Rock of Ages, logos
    5) Makarov: the Galilean

    Универсальный русско-английский словарь > Христос

  • 117 христос

    2) History: (the Galilean) Galilean
    3) Religion: Christ (= Messiah), Christus ("Christ", сокр. X.), God-Man, Light of the World, Lord Jesus, Messiah, Son of Man, bridegroom, the Rock of Ages, logos
    5) Makarov: the Galilean

    Универсальный русско-английский словарь > христос

  • 118 Stratingh, Sibrandus

    SUBJECT AREA: Electricity
    [br]
    b. 9 April 1785 Adorp, The Netherlands
    d. 15 February 1841 Groningen, The Netherlands
    [br]
    Dutch chemist and physician, maker of early electric motors.
    [br]
    Stratingh spent five years working for a relative who was a chemist in Groningen, and studied pharmacy under Professor Driessen. Encouraged to become a medical student, he qualified as a doctor of medicine in 1809. Later becoming a professor of chemistry at Groningen, he was honoured by a personal visit from the King to his laboratory in 1837. In 1835, assisted by Christopher Becker, an instrument maker, he built a table-top model of an electrically propelled vehicle. The motor, with wound armature and field coils, was geared to a wheel of a small carriage which also carried a single voltaic cell. A full-scale road vehicle was never built, but in 1840 he succeeded in making an electrically powered boat.
    [br]
    Principal Honours and Distinctions
    Cross of the Netherlands Lion 1831.
    Bibliography
    1841, De nagedachtenis van S.Stratingh Ez.gevierd in het Genootschap: ter bevordering der natuurkundige wetenschappen te Groningen, Groningen (a memorial volume that includes a list of his works).
    Further Reading
    B.Bowers, 1982, A History of Electric Light and Power, London, p. 45 (provides a brief account of Stratingh's electric vehicle).
    GW

    Biographical history of technology > Stratingh, Sibrandus

  • 119 أخرج

    أَخْرَجَ \ emit: to send out (heat, light, smell, sound, etc.). give off: to send out (smoke, smell, etc.): A fire of wet wood gives off a lot of smoke. produce: to control the making of a play or film: Our school play was produced by the history teacher (He trained the actors and arranged the scenes). \ See Also أطلق (أَطْلَق)، بعث (بَعَث)، قذف (قَذَف)‏ \ أَخْرَجَ أو أَدْخَلَ خُلْسَةً \ smuggle: to take (sth.) or sb. secretly and unlawfully into or out of a country, etc.: He smuggles gold. We smuggled him out of prison. \ أَخْرَجَ أو أصْدَرَ بُخارًا \ steam: to produce steam: a steaming cup of coffee. \ أَخْرَجَ عن الطَّوْر \ send sb. mad: to cause sb. to become mad. \ أَخْرَجَ من القِشرة \ shell: to remove the shell from (a nut, etc.). \ أَخْرَجَ نسخةً أو صُورة عَن \ reproduce: to make a copy of (sth.): Artists reproduce what they see. Records reproduce music. \ أَخْرَجَ هواء الزّفير \ exhale: to breathe out: He exhaled noisily.

    Arabic-English dictionary > أخرج

  • 120 France

    France [fʀɑ̃s]
    feminine noun
    histoire/équipe/ambassade de France French history/team/embassy
    ━━━━━━━━━━━━━━━━━
    There are two state-owned television channels in France: France 2 and France 3, a regionally-based channel. Broadly speaking, France 2 is a general-interest and light entertainment channel, while France 3 offers more cultural and educational viewing as well as the regional news.
    * * *
    fʀɑ̃s
    nom propre féminin France

    la France libreHistoire Free France

    * * *
    fʀɑ̃s nf

    en France [habiter]in France

    Je suis né en France. — I was born in France., [aller] to France

    Je vais en France pour Noël. — I'm going to France for Christmas.

    * * *
    [frɑ̃s] nom propre féminin
    ————————
    [frɑ̃s] nom propre masculin
    [navire]
    vieille France locution adjectivale invariable
    être ou faire (très) vieille France to be rather old-fashioned

    Dictionnaire Français-Anglais > France

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