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  • 101 world

    [wɜːld] 1.
    1) (planet) mondo m.

    this world and the next — il mondo terreno e l'altro mondo, l'aldiquà e l'aldilà

    the next o other world l'altro mondo, l'aldilà; to lead the world in electronics essere il leader mondiale dell'elettronica; to come into the world — venire al mondo, nascere

    2) fig. mondo m.

    to go up, down in the world — fare strada, cadere in basso

    the Western world — i paesi occidentali, il mondo occidentale

    2.
    modificatore [climate, market, politics, scale] mondiale; [ events] nel mondo; [record, championship] mondiale, del mondo; [ cruise] attorno al mondo
    ••

    (all) the world and his wifescherz. (proprio) tutti

    a world away from sth. — lontano un mondo da qcs.

    for all the world like — tale e quale, identico

    I'd give the world to... — darei qualsiasi cosa per...

    out of this world — favoloso, straordinario

    it did him the o a world of good gli ha fatto un gran bene; to set the world on fire avere un successo enorme, sfondare; to think the world of sb. ammirare tantissimo qcn.; to watch the world go by guardare il mondo affannarsi; what, where, who etc. in the world? che, dove, chi ecc. diavolo? worlds apart — agli antipodi, agli estremi opposti

    * * *
    [wə:ld]
    1) (the planet Earth: every country of the world.) mondo
    2) (the people who live on the planet Earth: The whole world is waiting for a cure for cancer.) mondo
    3) (any planet etc: people from other worlds.) mondo
    4) (a state of existence: Many people believe that after death the soul enters the next world; Do concentrate! You seem to be living in another world.) mondo
    5) (an area of life or activity: the insect world; the world of the international businessman.) mondo
    6) (a great deal: The holiday did him a/the world of good.) mondo
    7) (the lives and ways of ordinary people: He's been a monk for so long that he knows nothing of the (outside) world.) mondo
    - worldliness
    - worldwide
    - World Wide Web
    - the best of both worlds
    - for all the world
    - out of this world
    - what in the world? - what in the world
    * * *
    [wɜːld] 1.
    1) (planet) mondo m.

    this world and the next — il mondo terreno e l'altro mondo, l'aldiquà e l'aldilà

    the next o other world l'altro mondo, l'aldilà; to lead the world in electronics essere il leader mondiale dell'elettronica; to come into the world — venire al mondo, nascere

    2) fig. mondo m.

    to go up, down in the world — fare strada, cadere in basso

    the Western world — i paesi occidentali, il mondo occidentale

    2.
    modificatore [climate, market, politics, scale] mondiale; [ events] nel mondo; [record, championship] mondiale, del mondo; [ cruise] attorno al mondo
    ••

    (all) the world and his wifescherz. (proprio) tutti

    a world away from sth. — lontano un mondo da qcs.

    for all the world like — tale e quale, identico

    I'd give the world to... — darei qualsiasi cosa per...

    out of this world — favoloso, straordinario

    it did him the o a world of good gli ha fatto un gran bene; to set the world on fire avere un successo enorme, sfondare; to think the world of sb. ammirare tantissimo qcn.; to watch the world go by guardare il mondo affannarsi; what, where, who etc. in the world? che, dove, chi ecc. diavolo? worlds apart — agli antipodi, agli estremi opposti

    English-Italian dictionary > world

  • 102 in-house

    1) собственный, свой (напр., собственная многотиражка на предприятии, в учреждении)
    2) своими силами (т.е. у себя в организации)
    3) местный
    in-house fire brigade местная пожарная охрана; собственная пожарная охрана;
    Western Geco's2D seismic program in the Turkmenistan area together with in-house technical expertise in pore pressure measurement can be combined to measure А Для измерения А можно объединить программу
    Western Geco's двумерной сейсморазведки на территории Туркменистана с местным техническим опытом измерения порового давления

    English-Russian dictionary of scientific and technical difficulties vocabulary > in-house

  • 103 Economy

       Portugal's economy, under the influence of the European Economic Community (EEC), and later with the assistance of the European Union (EU), grew rapidly in 1985-86; through 1992, the average annual growth was 4-5 percent. While such growth rates did not last into the late 1990s, portions of Portugal's society achieved unprecedented prosperity, although poverty remained entrenched. It is important, however, to place this current growth, which includes some not altogether desirable developments, in historical perspective. On at least three occasions in this century, Portugal's economy has experienced severe dislocation and instability: during the turbulent First Republic (1911-25); during the Estado Novo, when the world Depression came into play (1930-39); and during the aftermath of the Revolution of 25 April, 1974. At other periods, and even during the Estado Novo, there were eras of relatively steady growth and development, despite the fact that Portugal's weak economy lagged behind industrialized Western Europe's economies, perhaps more than Prime Minister Antônio de Oliveira Salazar wished to admit to the public or to foreigners.
       For a number of reasons, Portugal's backward economy underwent considerable growth and development following the beginning of the colonial wars in Africa in early 1961. Recent research findings suggest that, contrary to the "stagnation thesis" that states that the Estado Novo economy during the last 14 years of its existence experienced little or no growth, there were important changes, policy shifts, structural evolution, and impressive growth rates. In fact, the average annual gross domestic product (GDP) growth rate (1961-74) was about 7 percent. The war in Africa was one significant factor in the post-1961 economic changes. The new costs of finance and spending on the military and police actions in the African and Asian empires in 1961 and thereafter forced changes in economic policy.
       Starting in 1963-64, the relatively closed economy was opened up to foreign investment, and Lisbon began to use deficit financing and more borrowing at home and abroad. Increased foreign investment, residence, and technical and military assistance also had effects on economic growth and development. Salazar's government moved toward greater trade and integration with various international bodies by signing agreements with the European Free Trade Association and several international finance groups. New multinational corporations began to operate in the country, along with foreign-based banks. Meanwhile, foreign tourism increased massively from the early 1960s on, and the tourism industry experienced unprecedented expansion. By 1973-74, Portugal received more than 8 million tourists annually for the first time.
       Under Prime Minister Marcello Caetano, other important economic changes occurred. High annual economic growth rates continued until the world energy crisis inflation and a recession hit Portugal in 1973. Caetano's system, through new development plans, modernized aspects of the agricultural, industrial, and service sectors and linked reform in education with plans for social change. It also introduced cadres of forward-looking technocrats at various levels. The general motto of Caetano's version of the Estado Novo was "Evolution with Continuity," but he was unable to solve the key problems, which were more political and social than economic. As the boom period went "bust" in 1973-74, and growth slowed greatly, it became clear that Caetano and his governing circle had no way out of the African wars and could find no easy compromise solution to the need to democratize Portugal's restive society. The economic background of the Revolution of 25 April 1974 was a severe energy shortage caused by the world energy crisis and Arab oil boycott, as well as high general inflation, increasing debts from the African wars, and a weakening currency. While the regime prescribed greater Portuguese investment in Africa, in fact Portuguese businesses were increasingly investing outside of the escudo area in Western Europe and the United States.
       During the two years of political and social turmoil following the Revolution of 25 April 1974, the economy weakened. Production, income, reserves, and annual growth fell drastically during 1974-76. Amidst labor-management conflict, there was a burst of strikes, and income and productivity plummeted. Ironically, one factor that cushioned the economic impact of the revolution was the significant gold reserve supply that the Estado Novo had accumulated, principally during Salazar's years. Another factor was emigration from Portugal and the former colonies in Africa, which to a degree reduced pressures for employment. The sudden infusion of more than 600,000 refugees from Africa did increase the unemployment rate, which in 1975 was 10-15 percent. But, by 1990, the unemployment rate was down to about 5-6 percent.
       After 1985, Portugal's economy experienced high growth rates again, which averaged 4-5 percent through 1992. Substantial economic assistance from the EEC and individual countries such as the United States, as well as the political stability and administrative continuity that derived from majority Social Democratic Party (PSD) governments starting in mid-1987, supported new growth and development in the EEC's second poorest country. With rapid infrastruc-tural change and some unregulated development, Portugal's leaders harbored a justifiable concern that a fragile environment and ecology were under new, unacceptable pressures. Among other improvements in the standard of living since 1974 was an increase in per capita income. By 1991, the average minimum monthly wage was about 40,000 escudos, and per capita income was about $5,000 per annum. By the end of the 20th century, despite continuing poverty at several levels in Portugal, Portugal's economy had made significant progress. In the space of 15 years, Portugal had halved the large gap in living standards between itself and the remainder of the EU. For example, when Portugal joined the EU in 1986, its GDP, in terms of purchasing power-parity, was only 53 percent of the EU average. By 2000, Portugal's GDP had reached 75 percent of the EU average, a considerable achievement. Whether Portugal could narrow this gap even further in a reasonable amount of time remained a sensitive question in Lisbon. Besides structural poverty and the fact that, in 2006, the EU largesse in structural funds (loans and grants) virtually ceased, a major challenge for Portugal's economy will be to reduce the size of the public sector (about 50 percent of GDP is in the central government) to increase productivity, attract outside investment, and diversify the economy. For Portugal's economic planners, the 21st century promises to be challenging.

    Historical dictionary of Portugal > Economy

  • 104 Blumlein, Alan Dower

    [br]
    b. 29 June 1903 Hampstead, London, England
    d. 7 June 1942
    [br]
    English electronics engineer, developer of telephone equipment, highly linear electromechanical recording and reproduction equipment, stereo techniques, video and radar technology.
    [br]
    He was a very bright scholar and received a BSc in electrical technology from City and Guilds College in 1923. He joined International Western Electric (later to become Standard Telephone and Cables) in 1924 after a period as an instructor/demonstrator at City and Guilds. He was instrumental in the design of telephone measuring equipment and in international committee work for standards for long-distance telephony.
    From 1929 Blumlein was employed by the Columbia Graphophone Company to develop an electric recording cutterhead that would be independent of Western Electric's patents for the system developed by Maxfield and Harrison. He attacked the problems in a most systematic fashion, and within a year he had developed a moving-coil cutterhead that was much more linear than the iron-cored systems known at the time. Eventually Blumlein designed a complete line of recording equipment, from microphone and through-power amplifiers. The design was used by Columbia; after the merger with the Gramophone Company in 1931 to form Electrical and Musical Industries Ltd (later known as EMI) it became the company standard, certainly for coarse-groove records, until c.1950.
    Blumlein became interested in stereophony (binaural sound), and developed and demonstrated a complete line of equipment, from correctly placed microphones via two-channel records and stereo pick-ups to correctly placed loudspeakers. The advent of silent surfaces of vinyl records made this approach commercial from the late 1950s. His approach was independent and quite different from that of A.C. Keller.
    His extreme facility for creating innovative solutions to electronic problems was used in EMI's development from 1934 to 1938 of the electronic television system, which became the BBC standard of 405 lines after the Second World War, when television broadcasting again became possible. Independent of official requirements, EMI developed a 60 MHz radar system and Blumlein was involved in the development of a centimetric radar and display system. It was during testing of this aircraft mounted equipment that he was killed in a crash.
    [br]
    Bibliography
    Blumlein was inventor or co-inventor of well over 120 patents, a complete list of which is to be found in Burns (1992; see below). The major sound-recording achievements are documented by British patent nos. 350,954, 350,998, 363,627 (highly linear cutterhead, 1930) and 394,325 (reads like a textbook on stereo technology, 1931).
    Further Reading
    The definitive biography of Blumlein has not yet been written; the material seems to have been collected, but is not yet available. However, R.W.Burns, 1992, "A.D.Blumlein, engineer extraordinary", Engineering Science and Education Journal (February): 19– 33 is a thorough account. Also B.J.Benzimra, 1967, "A.D. Blumlein: an electronics genius", Electronics \& Power (June): 218–24 provides an interesting summary.
    GB-N

    Biographical history of technology > Blumlein, Alan Dower

  • 105 Cai Lun (Tsai Lun)

    SUBJECT AREA: Paper and printing
    [br]
    b. c.57 AD China
    d. c.121 AD China
    [br]
    Chinese Director of Imperial Workshops who is usually credited with the invention of paper.
    [br]
    He was a confidential secretary to the Emperor. He became Director of the Imperial Workshops and he is said to have invented, or sponsored the invention of, paper around the year 105 AD. Recent studies, however, suggest that paper was already known in China two centuries earlier. The method of making it has hardly varied in principle since that time. The raw materials, then usually old fishing nets and clothing rags, were boiled with water, to which alkali in the form of wood ash was sometimes added. The resulting pulp was then beaten in a stone mortar with a stone or a wooden mallet. The pulp was then mixed and stirred with a large amount of water, and a sieve or mould (formed on a wooden frame carrying a mat of thin reeds sewn together) was dipped into it and was shaken to help the fibres in the layer of pulp to interlock and thus form a sheet of paper. The rest of the process consisted, then as now, of getting rid of the water: the sheets of paper were dried and bleached by leaving them to lie in the sun.
    Some of China's many inventions were achieved independently in Western Europe, but it seems that Europe's knowledge of papermaking stems from the Chinese. It was not until the eighth century that it passed into the Islamic world and so, first by contact with the Moors in Spain in the twelfth century, into Western Europe.
    Cai Lun was later made a marquis. Further promotion followed when he was regarded as the god of papermaking.
    [br]
    Further Reading
    J.Needham, 1985, Science and Civilisation in China, Cambridge: Cambridge University Press, Vol. V (1): Clerks and Craftsmen in China and the West, 1970.
    LRD

    Biographical history of technology > Cai Lun (Tsai Lun)

  • 106 Gray, Elisha

    SUBJECT AREA: Telecommunications
    [br]
    b. 2 August 1835 Barnesville, Ohio, USA
    d. 21 January 1901 Newtonville, Massachusetts, USA
    [br]
    American inventor who was only just beaten by Alexander Graham Bell in the race for the first telephone patent.
    [br]
    Initially apprenticed to a carpenter, Gray soon showed an interest in chemistry, but he eventually studied electrical engineering at Oberlin College, Oberlin, Ohio, in the late 1850s. In 1869 he founded the Western Electric Manufacturing Company, where he devised an electric-needle annunciator for use in hotels and lifts and carried out experimental work aimed at the development of a means of distant-speech communication. After successful realization of a liquid-based microphone and public demonstrations of a receiver using a metal diaphragm, on 14 February 1876 he deposited a caveat of intention to file a patent claim within three months for the invention of the telephone, only to learn that Alexander Graham Bell had filed a full patent claim only three hours earlier on the same day. Following litigation, the patent was eventually awarded to Bell. In 1880 Gray was appointed Professor of Dynamic Electricity at Oberlin College, but he appears to have retained his business interests since in 1891 he was both a member of the firm of Gray and Barton and electrician to his old firm, Western Electric. Subsequently, in 1895, he invented the TelAutograph, a form of remote-writing telegraph, or facsimile, capable of operating over short distances. The system used a transmitter in which the x and y movements of a writing stylus were coupled to a pair of variable resistors. In turn, these were connected by two telegraph wires to a pair of receiving coils, which were used to control the position of a pen on a sheet of paper, thus replicating the movement of the original stylus.
    [br]
    Bibliography
    1878, Experimental Research in Electro-Harmonic Telegraph and Telephony, 1867–76.
    Further Reading
    J.Munro, 1891, Heroes of the Telegraph.
    D.A.Hounshill, 1975, "Elisha Gray and the telephone. On the disadvantage of being an expert", Technology and Culture 16:133.
    —1976, "Bell and Gray. Contrast in style, politics and etiquette", Proceedings of the Institute of Electrical and Electronics Engineers 64:1,305.
    International Telecommunications Union, 1965, From Semaphore to Satellite, Geneva.
    KF

    Biographical history of technology > Gray, Elisha

  • 107 Hartley, Ralph V.L.

    [br]
    b. 1889 USA
    d. 1 May 1970 Summit, New Jersey, USA
    [br]
    American engineer who made contributions to radio communications.
    [br]
    Hartley obtained his BA in 1909 from the University of Utah, then gained a Rhodes Scholarship to Oxford University, England. After obtaining a further BA and a BSc in 1912 and 1913, respectively, he returned to the USA and took a job with the Western Electric Laboratories of the Bell Telephone Company, where he was in charge of radio-receiver development. In 1915 he invented the Hartley oscillator, analogous to that invented by Colpitts. Subsequently he worked on carrier telephony at Western Electric and then at Bell Laboratories. There he concen-trated on information theory, building on the pioneering work of Nyquist, in 1926 publishing his law that related information capacity, frequency bandwidth and time. Forced to give up work in 1929 due to ill health, he returned to Bell in 1939 as a consultant on transmission problems. During the Second World War he worked on various projects, including the use of servo-mechanisms for radar and fire control, and finally retired in 1950.
    [br]
    Principal Honours and Distinctions
    Institution of Electrical and Electronics Enginners Medal of Honour 1946.
    Bibliography
    29 May 1918, US patent no. 1,592,934 (plate modulator).
    29 September 1919, US patent no. 1,419,562 (balanced modulator or detector). 1922, with T.C.Fry, "Binaural location of complex sounds", Bell Systems Technical
    Journal (November).
    1923, "Relation of carrier and sidebands in radio transmission", Proceedings of the Institute of Radio Engineers 11:34.
    1924, "The transmission unit", Electrical Communications 3:34.
    1926, "Transmission limits of telephone lines", Bell Laboratories Record 1:225. 1928, "Transmission of information", Bell Systems Technical Journal (July).
    1928, "“TU” becomes Decibel", Bell Laboratories Record 7:137.
    1936, "Oscillations in systems with non-linear reactance", Bell System Technology Journal 15: 424.
    Further Reading
    M.D.Fagen (ed.), 1975, A History of Engineering \& Science in the Bell System, Vol. 1: Bell Laboratories.
    KF

    Biographical history of technology > Hartley, Ralph V.L.

  • 108 Ivatt, Henry Alfred

    [br]
    b. 16 September 1851 Cambridgeshire, England
    d. 25 October 1923 Haywards Heath, Sussex, England
    [br]
    English locomotive engineer, noted for the introduction of 4–4–2-type locomotives to Britain.
    [br]
    H.A.Ivatt initially joined the London \& North Western Railway as an apprentice at Crewe Works, and in 1877 moved to the Great Southern \& Western Railway in Ireland, eventually succeeding J.A.F. Aspinall as Locomotive Engineer at its works in Inchicore, Dublin. In 1896 he moved back to England to become Locomotive Superintendent of the Great Northern Railway. Weights of express trains were increasing rapidly there, and in 1898 Ivatt introduced his "Atlantic", or 4–4–2 type, the first locomotive of this wheel arrangement in Britain, which had originated in the USA only three years earlier. It was not until 1902, however, that he took full advantage of its potential, when he introduced an Atlantic with a wide firebox and a larger boiler. Both types were successful and even more so when superheated and fitted with piston valves some years later. The first locomotive of each type to be built is now preserved at the National Railway Museum in York.
    [br]
    Further Reading
    E.L.Ahrons, 1927, The British Steam Railway Locomotive 1825–1925, The Locomotive Publishing Co.
    C.Hamilton Ellis, 1959, British Railway History, Vol. II: 1877–1947, London: George Allen \& Unwin, pp. 195 and 268–9.
    PJGR

    Biographical history of technology > Ivatt, Henry Alfred

  • 109 Marrison, Warren Alvin

    [br]
    b. 21 May 1896 Inverary, Canada
    d. 27 March 1980 Palo Verdes Estates, California, USA
    [br]
    Canadian (naturalized American) electrical engineer, pioneer of the quartz clock.
    [br]
    Marrison received his high-school education at Kingston Collegiate Institute, Ontario, and in 1914 he entered Queen's University in Kingston. He graduated in Engineering Physics in 1920, his college career having been interrupted by war service in the Royal Flying Corps. During his service in the Flying Corps he worked on radio, and when he returned to Kingston he established his own transmitter. This interest in radio was later to influence his professional life.
    In 1921 he entered Harvard University, where he obtained an MA, and shortly afterwards he joined the Western Electric Company in New York to work on the recording of sound on film. In 1925 he transferred to Western Electric's Bell Laboratory, where he began what was to become his life's work: the development of frequency standards for radio transmission. In 1922 Cady had used the elastic vibration of a quartz crystal to control the frequency of a valve oscillator, but at that time there was no way of counting and displaying the number of vibrations as the frequency was too high. In 1927 Marrison succeeded in dividing the frequency electronically until it was low enough to drive a synchronous motor. Although his purpose was to determine the frequency accurately by counting the number of vibrations that occurred in a given time, he had incidentally produced the first quartz-crystal -ontrolled clock. The results were sufficiently encouraging for him to build an improved version the following year, specifically as a time and frequency standard.
    [br]
    Principal Honours and Distinctions
    British Horological Institute Gold Medal 1947. Clockmakers' Company Tompion Medal 1955.
    Bibliography
    1928, with J.W.Horton, "Precision measurement of frequency", Proceedings of the Institute of Radio Engineers 16:137–54 (provides details of the original quartz clock, although it was not described as such).
    1930, "The crystal clock", Proceedings of the National Academy of Sciences 16:496–507 (describes the second clock).
    Further Reading
    W.R.Topham, 1989, "Warren A.Marrison—pioneer of the quartz revolution", NAWCC Bulletin 31(2):126–34.
    J.D.Weaver, 1982, Electrical and Electronic Clocks and Watches, London (a technical assessment of his work on the quartz clock).
    DV

    Biographical history of technology > Marrison, Warren Alvin

  • 110 Pliny the Elder (Gaius Plinius Secundus)

    SUBJECT AREA: Metallurgy
    [br]
    b. c. 23 AD Como, Italy
    d. 25 August 79 AD near Pompeii, Italy
    [br]
    Roman encyclopedic writer on the natural world.
    [br]
    Pliny was well educated in Rome, and for ten years or so followed a military career with which he was able to combine literary work, writing especially on historical subjects. He completed his duties c. 57 AD and concentrated on writing until he resumed his official career in 69 AD with administrative duties. During this last phase he began work on his only extant work, the thirty-seven "books" of his Historia Naturalis (Natural History), each dealing with a broad subject such as astronomy, geography, mineralogy, etc. His last post was the command of the fleet based at Misenum, which came to an end when he sailed too near Vesuvius during the eruption that engulfed Pompeii and he was overcome by the fumes.
    Pliny developed an insatiable curiosity about the natural world. Unlike the Greeks, the Romans made few original contributions to scientific thought and observation, but some made careful compilations of the learning and observations of Greek scholars. The most notable and influential of these was the Historia Naturalis. To the ideas about the natural world gleaned from earlier Greek authors, he added information about natural history, mineral resources, crafts and some technological processes, such as the extraction of metals from their ores, reported to him from the corners of the Empire. He added a few observations of his own, noted during travels on his official duties. Not all the reports were reliable, and the work often presents a tangled web of fact and fable. Gibbon described it as an immense register in which the author has "deposited the discoveries, the arts, and the errors of mankind". Pliny was indefatigable in his relentless note-taking, even dictating to his secretary while dining.
    During the Dark Ages and early Middle Ages in Western Europe, Pliny's Historia Naturalis was the largest known collection of facts about the natural world and was drawn upon freely by a succession of later writers. Its influence survived the influx into Western Europe, from the twelfth century, of translations of the works of Greek and Arab scholars. After the invention of printing in the middle of the fifteenth century, Pliny was the first work on a scientific subject to be printed, in 1469. Many editions followed and it may still be consulted with profit for its insights into technical knowledge and practice in the ancient world.
    [br]
    Bibliography
    The standard Latin text with English translation is that edited by H.Rackham et al.(1942– 63, Loeb Classical Library, London: Heinemann, 10 vols). The French version is by A.
    Ernout et al. (1947–, Belles Lettres, Paris).
    Further Reading
    The editions mentioned above include useful biographical and other details. For special aspects of Pliny, see K.C.Bailey, 1929–32, The Elder Pliny's Chapters on Chemical Subjects, London, 2 vols.
    LRD

    Biographical history of technology > Pliny the Elder (Gaius Plinius Secundus)

  • 111 COMEDOC

    Универсальный англо-русский словарь > COMEDOC

  • 112 De Forest, Lee

    [br]
    b. 26 August 1873 Council Bluffs, Iowa, USA
    d. 30 June 1961 Hollywood, California, USA
    [br]
    American electrical engineer and inventor principally known for his invention of the Audion, or triode, vacuum tube; also a pioneer of sound in the cinema.
    [br]
    De Forest was born into the family of a Congregational minister that moved to Alabama in 1879 when the father became President of a college for African-Americans; this was a position that led to the family's social ostracism by the white community. By the time he was 13 years old, De Forest was already a keen mechanical inventor, and in 1893, rejecting his father's plan for him to become a clergyman, he entered the Sheffield Scientific School of Yale University. Following his first degree, he went on to study the propagation of electromagnetic waves, gaining a PhD in physics in 1899 for his thesis on the "Reflection of Hertzian Waves from the Ends of Parallel Wires", probably the first US thesis in the field of radio.
    He then joined the Western Electric Company in Chicago where he helped develop the infant technology of wireless, working his way up from a modest post in the production area to a position in the experimental laboratory. There, working alone after normal working hours, he developed a detector of electromagnetic waves based on an electrolytic device similar to that already invented by Fleming in England. Recognizing his talents, a number of financial backers enabled him to set up his own business in 1902 under the name of De Forest Wireless Telegraphy Company; he was soon demonstrating wireless telegraphy to interested parties and entering into competition with the American Marconi Company.
    Despite the failure of this company because of fraud by his partners, he continued his experiments; in 1907, by adding a third electrode, a wire mesh, between the anode and cathode of the thermionic diode invented by Fleming in 1904, he was able to produce the amplifying device now known as the triode valve and achieve a sensitivity of radio-signal reception much greater than possible with the passive carborundum and electrolytic detectors hitherto available. Patented under the name Audion, this new vacuum device was soon successfully used for experimental broadcasts of music and speech in New York and Paris. The invention of the Audion has been described as the beginning of the electronic era. Although much development work was required before its full potential was realized, the Audion opened the way to progress in all areas of sound transmission, recording and reproduction. The patent was challenged by Fleming and it was not until 1943 that De Forest's claim was finally recognized.
    Overcoming the near failure of his new company, the De Forest Radio Telephone Company, as well as unsuccessful charges of fraudulent promotion of the Audion, he continued to exploit the potential of his invention. By 1912 he had used transformer-coupling of several Audion stages to achieve high gain at radio frequencies, making long-distance communication a practical proposition, and had applied positive feedback from the Audion output anode to its input grid to realize a stable transmitter oscillator and modulator. These successes led to prolonged patent litigation with Edwin Armstrong and others, and he eventually sold the manufacturing rights, in retrospect often for a pittance.
    During the early 1920s De Forest began a fruitful association with T.W.Case, who for around ten years had been working to perfect a moving-picture sound system. De Forest claimed to have had an interest in sound films as early as 1900, and Case now began to supply him with photoelectric cells and primitive sound cameras. He eventually devised a variable-density sound-on-film system utilizing a glow-discharge modulator, the Photion. By 1926 De Forest's Phonofilm had been successfully demonstrated in over fifty theatres and this system became the basis of Movietone. Though his ideas were on the right lines, the technology was insufficiently developed and it was left to others to produce a system acceptable to the film industry. However, De Forest had played a key role in transforming the nature of the film industry; within a space of five years the production of silent films had all but ceased.
    In the following decade De Forest applied the Audion to the development of medical diathermy. Finally, after spending most of his working life as an independent inventor and entrepreneur, he worked for a time during the Second World War at the Bell Telephone Laboratories on military applications of electronics.
    [br]
    Principal Honours and Distinctions
    Institute of Electronic and Radio Engineers Medal of Honour 1922. President, Institute of Electronic and Radio Engineers 1930. Institute of Electrical and Electronics Engineers Edison Medal 1946.
    Bibliography
    1904, "Electrolytic detectors", Electrician 54:94 (describes the electrolytic detector). 1907, US patent no. 841,387 (the Audion).
    1950, Father of Radio, Chicago: WIlcox \& Follett (autobiography).
    De Forest gave his own account of the development of his sound-on-film system in a series of articles: 1923. "The Phonofilm", Transactions of the Society of Motion Picture Engineers 16 (May): 61–75; 1924. "Phonofilm progress", Transactions of the Society of Motion Picture Engineers 20:17–19; 1927, "Recent developments in the Phonofilm", Transactions of the Society of Motion Picture Engineers 27:64–76; 1941, "Pioneering in talking pictures", Journal of the Society of Motion Picture Engineers 36 (January): 41–9.
    Further Reading
    G.Carneal, 1930, A Conqueror of Space (biography).
    I.Levine, 1964, Electronics Pioneer, Lee De Forest (biography).
    E.I.Sponable, 1947, "Historical development of sound films", Journal of the Society of Motion Picture Engineers 48 (April): 275–303 (an authoritative account of De Forest's sound-film work, by Case's assistant).
    W.R.McLaurin, 1949, Invention and Innovation in the Radio Industry.
    C.F.Booth, 1955, "Fleming and De Forest. An appreciation", in Thermionic Valves 1904– 1954, IEE.
    V.J.Phillips, 1980, Early Radio Detectors, London: Peter Peregrinus.
    KF / JW

    Biographical history of technology > De Forest, Lee

  • 113 Jenney, William Le Baron

    [br]
    b. 25 September 1832 Fairhaven, Massachusetts, USA
    d. 15 June 1907 Los Angeles, California, USA
    [br]
    American architect and engineer who pioneered a method of steel-framed construction that made the skyscraper possible.
    [br]
    Jenney's Home Insurance Building in Chicago was completed in 1885 but demolished in 1931. It was the first building to rise above ten to twelve storeys and was possible because it did not require immensely thick walls on the lower storeys to carry the weight above. Using square-sectioned cast-iron wall piers, hollow cylindrical cast-iron columns on the interior and, across these, steel and cast-iron beams and girders, Jenney produced a load-bearing metal framework independent of the curtain walling. Beams and girders were united by ties as well as being bolted to the vertical members, so providing a strong framework to take the building load. Jenney went on to build in Chicago the Second Leiter Building (1889–91) and, in 1891, the Manhattan Building. He played a considerable part in the planning of the 1893 Chicago World's Fair. Jenney is accepted as having been the founder of the Chicago school of architecture, and he trained many of the later noted architects and builders of the city, such as William Holabird, Martin Roche and Louis Sullivan.
    [br]
    Further Reading
    A.Woltersdorf, 1924, "The father of the skeleton frame building", Western Architecture 33.
    F.A.Randall, 1949, History of the Development of Building Construction in Chicago, Urbana: University of Illinois Press.
    C.Condit, 1964, The Chicago School of Architecture: A History of Commercial and Public Building in the Chicago Area 1875–1925, Chicago: University of Chicago Press.
    DY

    Biographical history of technology > Jenney, William Le Baron

  • 114 Longbotham, John

    SUBJECT AREA: Canals
    [br]
    b. mid-seventeenth century Halifax (?), Yorkshire, England d. 1801
    [br]
    English canal engineer.
    [br]
    The nature of Longbotham's career before 1766 is unknown, although he was associated with Smeaton as a pupil and thus became acquainted with canal engineering. In 1766 he suggested a canal linking Leeds and Liverpool across the Pennines. The suggestion was accepted and in 1767–8 he surveyed the line of the Leeds \& Liverpool Canal. This was approved by the promoters and by Brindley, who had been called in as an assessor. The Act was obtained in 1770 and Longbotham was first appointed as Clerk of Works under Brindley as Chief Engineer. As the latter did not take up the appointment, Longbotham became Chief Engineer and from 1770 to 1775 was responsible for the design of locks and aqueducts. He also prepared contracts and supervised construction. Meanwhile, in 1768 he had proposed a canal from the Calder and Hebble to Halifax. In 1773 he was elected to the Smeatonian Society of Civil Engineers. As soon as a part of the Leeds and Liverpool Canal was opened he started a passenger packet service, but in 1775, after completing both 50 miles (80 km) of the canal and the Bradford Canal, he was dismissed from his post because of discrepancies in his accounts. However, in the early 1790s he again advised the Leeds and Liverpool proprietors, who were in difficulties on the summit level. Longbotham had colliery interests in the Uphol-land area of Wigan, and in 1787 he surveyed a proposed route for the Lancaster Canal. In 1792 he was also associated with the Grand Western Canal. Details of his later life are scarce, but it is known that he died in poverty in 1801 and that the Leeds \& Liverpool company paid his funeral expenses.
    JHB

    Biographical history of technology > Longbotham, John

  • 115 bloc

    сущ. франц.
    пол. блок, объединение (государств с относительно сходными государственными режимами и интересами либо партий с общими идеалами, целями или задачами)
    See:

    * * *
    Bloc Gold Area "золотая зона" (блок): межгосударственная группировка с участием Франции, Бельгии, Швейцарии, Нидерландов и некоторых других стран, которые придерживались той или иной формы золотого стандарта в 1933-1936 гг.; Великобритания отказалась от золотого стандарта в 1931 г., и ее примеру скоро последовало примерно 40 государств, см. gold standard.

    Англо-русский экономический словарь > bloc

  • 116 region

    сущ.
    1) общ. регион, область, край, округ, район (административная единица, часть территории страны)
    Syn:
    See:
    2) общ. регион ( группа стран)
    3) амер., стат. регион
    а) (установленное Бюро переписей США обозначение для четырех крупнейших экономико-статистических единиц США, к которым относятся Северо-Восток, Средний Запад, Юг и Запад)
    See:
    б) (область ответственности подразделений Службы иммиграции и натурализации; один из четырех районов: Восточный (Eastern), Южный (Southern), Северный (Northern) или Западный (Western))
    See:
    4) гос. упр., брит. = Government Office Region
    * * *
    регион, район страны

    Англо-русский экономический словарь > region

  • 117 AWES

    Универсальный англо-русский словарь > AWES

  • 118 COMSUBWESTLANT

    Военный термин: Commander, Submarine Force, Western Atlantic Area

    Универсальный англо-русский словарь > COMSUBWESTLANT

  • 119 CONSUBWESTLANT

    Военный термин: Commander, Submarine Force, Western Atlantic Area

    Универсальный англо-русский словарь > CONSUBWESTLANT

  • 120 PER

    1) Общая лексика: hum. сокр. Protein Efficiency Ratio
    3) Медицина: peak ejection rate
    7) Сельское хозяйство: protein efficiency ratio
    8) Финансы: Public Expenditure Review (Всемирный банк), обзор государственных расходов
    9) Биржевой термин: post-execution reporting
    10) Сокращение: Persian
    11) Вычислительная техника: Packed Encoding Rules (ASN.1)
    12) Картография: perennial
    14) Холодильная техника: performance energy ratio
    16) Инвестиции: price/earnings ratio
    17) Сетевые технологии: Packet Encoding Rules
    18) Макаров: program event recording
    19) Расширение файла: Program Editor resident area (WordPerfect Library)
    20) Выставки: Post Event Report
    22) NYSE. Perot Systems Corporation
    23) Аэропорты: Perth, Western Australia, Australia

    Универсальный англо-русский словарь > PER

См. также в других словарях:

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