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using experiments

  • 1 с использованием

    •

    Experiments were conducted using [or by (or with) the use of] the optimum quantities of various dispersing agents.

    •

    These calculations can be carried out with (or using) the data accumulated in Table 6-5.

    Русско-английский научно-технический словарь переводчика > с использованием

  • 2 Talbot, William Henry Fox

    [br]
    b. 11 February 1800 Melbury, England
    d. 17 September 1877 Lacock, Wiltshire, England
    [br]
    English scientist, inventor of negative—positive photography and practicable photo engraving.
    [br]
    Educated at Harrow, where he first showed an interest in science, and at Cambridge, Talbot was an outstanding scholar and a formidable mathematician. He published over fifty scientific papers and took out twelve English patents. His interests outside the field of science were also wide and included Assyriology, etymology and the classics. He was briefly a Member of Parliament, but did not pursue a parliamentary career.
    Talbot's invention of photography arose out of his frustrating attempts to produce acceptable pencil sketches using popular artist's aids, the camera discura and camera lucida. From his experiments with the former he conceived the idea of placing on the screen a paper coated with silver salts so that the image would be captured chemically. During the spring of 1834 he made outline images of subjects such as leaves and flowers by placing them on sheets of sensitized paper and exposing them to sunlight. No camera was involved and the first images produced using an optical system were made with a solar microscope. It was only when he had devised a more sensitive paper that Talbot was able to make camera pictures; the earliest surviving camera negative dates from August 1835. From the beginning, Talbot noticed that the lights and shades of his images were reversed. During 1834 or 1835 he discovered that by placing this reversed image on another sheet of sensitized paper and again exposing it to sunlight, a picture was produced with lights and shades in the correct disposition. Talbot had discovered the basis of modern photography, the photographic negative, from which could be produced an unlimited number of positives. He did little further work until the announcement of Daguerre's process in 1839 prompted him to publish an account of his negative-positive process. Aware that his photogenic drawing process had many imperfections, Talbot plunged into further experiments and in September 1840, using a mixture incorporating a solution of gallic acid, discovered an invisible latent image that could be made visible by development. This improved calotype process dramatically shortened exposure times and allowed Talbot to take portraits. In 1841 he patented the process, an exercise that was later to cause controversy, and between 1844 and 1846 produced The Pencil of Nature, the world's first commercial photographically illustrated book.
    Concerned that some of his photographs were prone to fading, Talbot later began experiments to combine photography with printing and engraving. Using bichromated gelatine, he devised the first practicable method of photo engraving, which was patented as Photoglyphic engraving in October 1852. He later went on to use screens of gauze, muslin and finely powdered gum to break up the image into lines and dots, thus anticipating modern photomechanical processes.
    Talbot was described by contemporaries as the "Father of Photography" primarily in recognition of his discovery of the negative-positive process, but he also produced the first photomicrographs, took the first high-speed photographs with the aid of a spark from a Leyden jar, and is credited with proposing infra-red photography. He was a shy man and his misguided attempts to enforce his calotype patent made him many enemies. It was perhaps for this reason that he never received the formal recognition from the British nation that his family felt he deserved.
    [br]
    Principal Honours and Distinctions
    FRS March 1831. Royal Society Rumford Medal 1842. Grand Médaille d'Honneur, L'Exposition Universelle, Paris, 1855. Honorary Doctorate of Laws, Edinburgh University, 1863.
    Bibliography
    1839, "Some account of the art of photographic drawing", Royal Society Proceedings 4:120–1; Phil. Mag., XIV, 1839, pp. 19–21.
    8 February 1841, British patent no. 8842 (calotype process).
    1844–6, The Pencil of Nature, 6 parts, London (Talbot'a account of his invention can be found in the introduction; there is a facsimile edn, with an intro. by Beamont Newhall, New York, 1968.
    Further Reading
    H.J.P.Arnold, 1977, William Henry Fox Talbot, London.
    D.B.Thomas, 1964, The First Negatives, London (a lucid concise account of Talbot's photograph work).
    J.Ward and S.Stevenson, 1986, Printed Light, Edinburgh (an essay on Talbot's invention and its reception).
    H.Gernsheim and A.Gernsheim, 1977, The History of Photography, London (a wider picture of Talbot, based primarily on secondary sources).
    JW

    Biographical history of technology > Talbot, William Henry Fox

  • 3 Edison, Thomas Alva

    [br]
    b. 11 February 1847 Milan, Ohio, USA
    d. 18 October 1931 Glenmont
    [br]
    American inventor and pioneer electrical developer.
    [br]
    He was the son of Samuel Edison, who was in the timber business. His schooling was delayed due to scarlet fever until 1855, when he was 8½ years old, but he was an avid reader. By the age of 14 he had a job as a newsboy on the railway from Port Huron to Detroit, a distance of sixty-three miles (101 km). He worked a fourteen-hour day with a stopover of five hours, which he spent in the Detroit Free Library. He also sold sweets on the train and, later, fruit and vegetables, and was soon making a profit of $20 a week. He then started two stores in Port Huron and used a spare freight car as a laboratory. He added a hand-printing press to produce 400 copies weekly of The Grand Trunk Herald, most of which he compiled and edited himself. He set himself to learn telegraphy from the station agent at Mount Clements, whose son he had saved from being run over by a freight car.
    At the age of 16 he became a telegraphist at Port Huron. In 1863 he became railway telegraphist at the busy Stratford Junction of the Grand Trunk Railroad, arranging a clock with a notched wheel to give the hourly signal which was to prove that he was awake and at his post! He left hurriedly after failing to hold a train which was nearly involved in a head-on collision. He usually worked the night shift, allowing himself time for experiments during the day. His first invention was an arrangement of two Morse registers so that a high-speed input could be decoded at a slower speed. Moving from place to place he held many positions as a telegraphist. In Boston he invented an automatic vote recorder for Congress and patented it, but the idea was rejected. This was the first of a total of 1180 patents that he was to take out during his lifetime. After six years he resigned from the Western Union Company to devote all his time to invention, his next idea being an improved ticker-tape machine for stockbrokers. He developed a duplex telegraphy system, but this was turned down by the Western Union Company. He then moved to New York.
    Edison found accommodation in the battery room of Law's Gold Reporting Company, sleeping in the cellar, and there his repair of a broken transmitter marked him as someone of special talents. His superior soon resigned, and he was promoted with a salary of $300 a month. Western Union paid him $40,000 for the sole rights on future improvements on the duplex telegraph, and he moved to Ward Street, Newark, New Jersey, where he employed a gathering of specialist engineers. Within a year, he married one of his employees, Mary Stilwell, when she was only 16: a daughter, Marion, was born in 1872, and two sons, Thomas and William, in 1876 and 1879, respectively.
    He continued to work on the automatic telegraph, a device to send out messages faster than they could be tapped out by hand: that is, over fifty words per minute or so. An earlier machine by Alexander Bain worked at up to 400 words per minute, but was not good over long distances. Edison agreed to work on improving this feature of Bain's machine for the Automatic Telegraph Company (ATC) for $40,000. He improved it to a working speed of 500 words per minute and ran a test between Washington and New York. Hoping to sell their equipment to the Post Office in Britain, ATC sent Edison to England in 1873 to negotiate. A 500-word message was to be sent from Liverpool to London every half-hour for six hours, followed by tests on 2,200 miles (3,540 km) of cable at Greenwich. Only confused results were obtained due to induction in the cable, which lay coiled in a water tank. Edison returned to New York, where he worked on his quadruplex telegraph system, tests of which proved a success between New York and Albany in December 1874. Unfortunately, simultaneous negotiation with Western Union and ATC resulted in a lawsuit.
    Alexander Graham Bell was granted a patent for a telephone in March 1876 while Edison was still working on the same idea. His improvements allowed the device to operate over a distance of hundreds of miles instead of only a few miles. Tests were carried out over the 106 miles (170 km) between New York and Philadelphia. Edison applied for a patent on the carbon-button transmitter in April 1877, Western Union agreeing to pay him $6,000 a year for the seventeen-year duration of the patent. In these years he was also working on the development of the electric lamp and on a duplicating machine which would make up to 3,000 copies from a stencil. In 1876–7 he moved from Newark to Menlo Park, twenty-four miles (39 km) from New York on the Pennsylvania Railway, near Elizabeth. He had bought a house there around which he built the premises that would become his "inventions factory". It was there that he began the use of his 200- page pocket notebooks, each of which lasted him about two weeks, so prolific were his ideas. When he died he left 3,400 of them filled with notes and sketches.
    Late in 1877 he applied for a patent for a phonograph which was granted on 19 February 1878, and by the end of the year he had formed a company to manufacture this totally new product. At the time, Edison saw the device primarily as a business aid rather than for entertainment, rather as a dictating machine. In August 1878 he was granted a British patent. In July 1878 he tried to measure the heat from the solar corona at a solar eclipse viewed from Rawlins, Wyoming, but his "tasimeter" was too sensitive.
    Probably his greatest achievement was "The Subdivision of the Electric Light" or the "glow bulb". He tried many materials for the filament before settling on carbon. He gave a demonstration of electric light by lighting up Menlo Park and inviting the public. Edison was, of course, faced with the problem of inventing and producing all the ancillaries which go to make up the electrical system of generation and distribution-meters, fuses, insulation, switches, cabling—even generators had to be designed and built; everything was new. He started a number of manufacturing companies to produce the various components needed.
    In 1881 he built the world's largest generator, which weighed 27 tons, to light 1,200 lamps at the Paris Exhibition. It was later moved to England to be used in the world's first central power station with steam engine drive at Holborn Viaduct, London. In September 1882 he started up his Pearl Street Generating Station in New York, which led to a worldwide increase in the application of electric power, particularly for lighting. At the same time as these developments, he built a 1,300yd (1,190m) electric railway at Menlo Park.
    On 9 August 1884 his wife died of typhoid. Using his telegraphic skills, he proposed to 19-year-old Mina Miller in Morse code while in the company of others on a train. He married her in February 1885 before buying a new house and estate at West Orange, New Jersey, building a new laboratory not far away in the Orange Valley.
    Edison used direct current which was limited to around 250 volts. Alternating current was largely developed by George Westinghouse and Nicola Tesla, using transformers to step up the current to a higher voltage for long-distance transmission. The use of AC gradually overtook the Edison DC system.
    In autumn 1888 he patented a form of cinephotography, the kinetoscope, obtaining film-stock from George Eastman. In 1893 he set up the first film studio, which was pivoted so as to catch the sun, with a hinged roof which could be raised. In 1894 kinetoscope parlours with "peep shows" were starting up in cities all over America. Competition came from the Latham Brothers with a screen-projection machine, which Edison answered with his "Vitascope", shown in New York in 1896. This showed pictures with accompanying sound, but there was some difficulty with synchronization. Edison also experimented with captions at this early date.
    In 1880 he filed a patent for a magnetic ore separator, the first of nearly sixty. He bought up deposits of low-grade iron ore which had been developed in the north of New Jersey. The process was a commercial success until the discovery of iron-rich ore in Minnesota rendered it uneconomic and uncompetitive. In 1898 cement rock was discovered in New Village, west of West Orange. Edison bought the land and started cement manufacture, using kilns twice the normal length and using half as much fuel to heat them as the normal type of kiln. In 1893 he met Henry Ford, who was building his second car, at an Edison convention. This started him on the development of a battery for an electric car on which he made over 9,000 experiments. In 1903 he sold his patent for wireless telegraphy "for a song" to Guglielmo Marconi.
    In 1910 Edison designed a prefabricated concrete house. In December 1914 fire destroyed three-quarters of the West Orange plant, but it was at once rebuilt, and with the threat of war Edison started to set up his own plants for making all the chemicals that he had previously been buying from Europe, such as carbolic acid, phenol, benzol, aniline dyes, etc. He was appointed President of the Navy Consulting Board, for whom, he said, he made some forty-five inventions, "but they were pigeonholed, every one of them". Thus did Edison find that the Navy did not take kindly to civilian interference.
    In 1927 he started the Edison Botanic Research Company, founded with similar investment from Ford and Firestone with the object of finding a substitute for overseas-produced rubber. In the first year he tested no fewer than 3,327 possible plants, in the second year, over 1,400, eventually developing a variety of Golden Rod which grew to 14 ft (4.3 m) in height. However, all this effort and money was wasted, due to the discovery of synthetic rubber.
    In October 1929 he was present at Henry Ford's opening of his Dearborn Museum to celebrate the fiftieth anniversary of the incandescent lamp, including a replica of the Menlo Park laboratory. He was awarded the Congressional Gold Medal and was elected to the American Academy of Sciences. He died in 1931 at his home, Glenmont; throughout the USA, lights were dimmed temporarily on the day of his funeral.
    [br]
    Principal Honours and Distinctions
    Member of the American Academy of Sciences. Congressional Gold Medal.
    Further Reading
    M.Josephson, 1951, Edison, Eyre \& Spottiswode.
    R.W.Clark, 1977, Edison, the Man who Made the Future, Macdonald \& Jane.
    IMcN

    Biographical history of technology > Edison, Thomas Alva

  • 4 Artificial Intelligence

       In my opinion, none of [these programs] does even remote justice to the complexity of human mental processes. Unlike men, "artificially intelligent" programs tend to be single minded, undistractable, and unemotional. (Neisser, 1967, p. 9)
       Future progress in [artificial intelligence] will depend on the development of both practical and theoretical knowledge.... As regards theoretical knowledge, some have sought a unified theory of artificial intelligence. My view is that artificial intelligence is (or soon will be) an engineering discipline since its primary goal is to build things. (Nilsson, 1971, pp. vii-viii)
       Most workers in AI [artificial intelligence] research and in related fields confess to a pronounced feeling of disappointment in what has been achieved in the last 25 years. Workers entered the field around 1950, and even around 1960, with high hopes that are very far from being realized in 1972. In no part of the field have the discoveries made so far produced the major impact that was then promised.... In the meantime, claims and predictions regarding the potential results of AI research had been publicized which went even farther than the expectations of the majority of workers in the field, whose embarrassments have been added to by the lamentable failure of such inflated predictions....
       When able and respected scientists write in letters to the present author that AI, the major goal of computing science, represents "another step in the general process of evolution"; that possibilities in the 1980s include an all-purpose intelligence on a human-scale knowledge base; that awe-inspiring possibilities suggest themselves based on machine intelligence exceeding human intelligence by the year 2000 [one has the right to be skeptical]. (Lighthill, 1972, p. 17)
       4) Just as Astronomy Succeeded Astrology, the Discovery of Intellectual Processes in Machines Should Lead to a Science, Eventually
       Just as astronomy succeeded astrology, following Kepler's discovery of planetary regularities, the discoveries of these many principles in empirical explorations on intellectual processes in machines should lead to a science, eventually. (Minsky & Papert, 1973, p. 11)
       Many problems arise in experiments on machine intelligence because things obvious to any person are not represented in any program. One can pull with a string, but one cannot push with one.... Simple facts like these caused serious problems when Charniak attempted to extend Bobrow's "Student" program to more realistic applications, and they have not been faced up to until now. (Minsky & Papert, 1973, p. 77)
       What do we mean by [a symbolic] "description"? We do not mean to suggest that our descriptions must be made of strings of ordinary language words (although they might be). The simplest kind of description is a structure in which some features of a situation are represented by single ("primitive") symbols, and relations between those features are represented by other symbols-or by other features of the way the description is put together. (Minsky & Papert, 1973, p. 11)
       [AI is] the use of computer programs and programming techniques to cast light on the principles of intelligence in general and human thought in particular. (Boden, 1977, p. 5)
       The word you look for and hardly ever see in the early AI literature is the word knowledge. They didn't believe you have to know anything, you could always rework it all.... In fact 1967 is the turning point in my mind when there was enough feeling that the old ideas of general principles had to go.... I came up with an argument for what I called the primacy of expertise, and at the time I called the other guys the generalists. (Moses, quoted in McCorduck, 1979, pp. 228-229)
       9) Artificial Intelligence Is Psychology in a Particularly Pure and Abstract Form
       The basic idea of cognitive science is that intelligent beings are semantic engines-in other words, automatic formal systems with interpretations under which they consistently make sense. We can now see why this includes psychology and artificial intelligence on a more or less equal footing: people and intelligent computers (if and when there are any) turn out to be merely different manifestations of the same underlying phenomenon. Moreover, with universal hardware, any semantic engine can in principle be formally imitated by a computer if only the right program can be found. And that will guarantee semantic imitation as well, since (given the appropriate formal behavior) the semantics is "taking care of itself" anyway. Thus we also see why, from this perspective, artificial intelligence can be regarded as psychology in a particularly pure and abstract form. The same fundamental structures are under investigation, but in AI, all the relevant parameters are under direct experimental control (in the programming), without any messy physiology or ethics to get in the way. (Haugeland, 1981b, p. 31)
       There are many different kinds of reasoning one might imagine:
        Formal reasoning involves the syntactic manipulation of data structures to deduce new ones following prespecified rules of inference. Mathematical logic is the archetypical formal representation. Procedural reasoning uses simulation to answer questions and solve problems. When we use a program to answer What is the sum of 3 and 4? it uses, or "runs," a procedural model of arithmetic. Reasoning by analogy seems to be a very natural mode of thought for humans but, so far, difficult to accomplish in AI programs. The idea is that when you ask the question Can robins fly? the system might reason that "robins are like sparrows, and I know that sparrows can fly, so robins probably can fly."
        Generalization and abstraction are also natural reasoning process for humans that are difficult to pin down well enough to implement in a program. If one knows that Robins have wings, that Sparrows have wings, and that Blue jays have wings, eventually one will believe that All birds have wings. This capability may be at the core of most human learning, but it has not yet become a useful technique in AI.... Meta- level reasoning is demonstrated by the way one answers the question What is Paul Newman's telephone number? You might reason that "if I knew Paul Newman's number, I would know that I knew it, because it is a notable fact." This involves using "knowledge about what you know," in particular, about the extent of your knowledge and about the importance of certain facts. Recent research in psychology and AI indicates that meta-level reasoning may play a central role in human cognitive processing. (Barr & Feigenbaum, 1981, pp. 146-147)
       Suffice it to say that programs already exist that can do things-or, at the very least, appear to be beginning to do things-which ill-informed critics have asserted a priori to be impossible. Examples include: perceiving in a holistic as opposed to an atomistic way; using language creatively; translating sensibly from one language to another by way of a language-neutral semantic representation; planning acts in a broad and sketchy fashion, the details being decided only in execution; distinguishing between different species of emotional reaction according to the psychological context of the subject. (Boden, 1981, p. 33)
       Can the synthesis of Man and Machine ever be stable, or will the purely organic component become such a hindrance that it has to be discarded? If this eventually happens-and I have... good reasons for thinking that it must-we have nothing to regret and certainly nothing to fear. (Clarke, 1984, p. 243)
       The thesis of GOFAI... is not that the processes underlying intelligence can be described symbolically... but that they are symbolic. (Haugeland, 1985, p. 113)
        14) Artificial Intelligence Provides a Useful Approach to Psychological and Psychiatric Theory Formation
       It is all very well formulating psychological and psychiatric theories verbally but, when using natural language (even technical jargon), it is difficult to recognise when a theory is complete; oversights are all too easily made, gaps too readily left. This is a point which is generally recognised to be true and it is for precisely this reason that the behavioural sciences attempt to follow the natural sciences in using "classical" mathematics as a more rigorous descriptive language. However, it is an unfortunate fact that, with a few notable exceptions, there has been a marked lack of success in this application. It is my belief that a different approach-a different mathematics-is needed, and that AI provides just this approach. (Hand, quoted in Hand, 1985, pp. 6-7)
       We might distinguish among four kinds of AI.
       Research of this kind involves building and programming computers to perform tasks which, to paraphrase Marvin Minsky, would require intelligence if they were done by us. Researchers in nonpsychological AI make no claims whatsoever about the psychological realism of their programs or the devices they build, that is, about whether or not computers perform tasks as humans do.
       Research here is guided by the view that the computer is a useful tool in the study of mind. In particular, we can write computer programs or build devices that simulate alleged psychological processes in humans and then test our predictions about how the alleged processes work. We can weave these programs and devices together with other programs and devices that simulate different alleged mental processes and thereby test the degree to which the AI system as a whole simulates human mentality. According to weak psychological AI, working with computer models is a way of refining and testing hypotheses about processes that are allegedly realized in human minds.
    ... According to this view, our minds are computers and therefore can be duplicated by other computers. Sherry Turkle writes that the "real ambition is of mythic proportions, making a general purpose intelligence, a mind." (Turkle, 1984, p. 240) The authors of a major text announce that "the ultimate goal of AI research is to build a person or, more humbly, an animal." (Charniak & McDermott, 1985, p. 7)
       Research in this field, like strong psychological AI, takes seriously the functionalist view that mentality can be realized in many different types of physical devices. Suprapsychological AI, however, accuses strong psychological AI of being chauvinisticof being only interested in human intelligence! Suprapsychological AI claims to be interested in all the conceivable ways intelligence can be realized. (Flanagan, 1991, pp. 241-242)
        16) Determination of Relevance of Rules in Particular Contexts
       Even if the [rules] were stored in a context-free form the computer still couldn't use them. To do that the computer requires rules enabling it to draw on just those [ rules] which are relevant in each particular context. Determination of relevance will have to be based on further facts and rules, but the question will again arise as to which facts and rules are relevant for making each particular determination. One could always invoke further facts and rules to answer this question, but of course these must be only the relevant ones. And so it goes. It seems that AI workers will never be able to get started here unless they can settle the problem of relevance beforehand by cataloguing types of context and listing just those facts which are relevant in each. (Dreyfus & Dreyfus, 1986, p. 80)
       Perhaps the single most important idea to artificial intelligence is that there is no fundamental difference between form and content, that meaning can be captured in a set of symbols such as a semantic net. (G. Johnson, 1986, p. 250)
        18) The Assumption That the Mind Is a Formal System
       Artificial intelligence is based on the assumption that the mind can be described as some kind of formal system manipulating symbols that stand for things in the world. Thus it doesn't matter what the brain is made of, or what it uses for tokens in the great game of thinking. Using an equivalent set of tokens and rules, we can do thinking with a digital computer, just as we can play chess using cups, salt and pepper shakers, knives, forks, and spoons. Using the right software, one system (the mind) can be mapped into the other (the computer). (G. Johnson, 1986, p. 250)
        19) A Statement of the Primary and Secondary Purposes of Artificial Intelligence
       The primary goal of Artificial Intelligence is to make machines smarter.
       The secondary goals of Artificial Intelligence are to understand what intelligence is (the Nobel laureate purpose) and to make machines more useful (the entrepreneurial purpose). (Winston, 1987, p. 1)
       The theoretical ideas of older branches of engineering are captured in the language of mathematics. We contend that mathematical logic provides the basis for theory in AI. Although many computer scientists already count logic as fundamental to computer science in general, we put forward an even stronger form of the logic-is-important argument....
       AI deals mainly with the problem of representing and using declarative (as opposed to procedural) knowledge. Declarative knowledge is the kind that is expressed as sentences, and AI needs a language in which to state these sentences. Because the languages in which this knowledge usually is originally captured (natural languages such as English) are not suitable for computer representations, some other language with the appropriate properties must be used. It turns out, we think, that the appropriate properties include at least those that have been uppermost in the minds of logicians in their development of logical languages such as the predicate calculus. Thus, we think that any language for expressing knowledge in AI systems must be at least as expressive as the first-order predicate calculus. (Genesereth & Nilsson, 1987, p. viii)
        21) Perceptual Structures Can Be Represented as Lists of Elementary Propositions
       In artificial intelligence studies, perceptual structures are represented as assemblages of description lists, the elementary components of which are propositions asserting that certain relations hold among elements. (Chase & Simon, 1988, p. 490)
       Artificial intelligence (AI) is sometimes defined as the study of how to build and/or program computers to enable them to do the sorts of things that minds can do. Some of these things are commonly regarded as requiring intelligence: offering a medical diagnosis and/or prescription, giving legal or scientific advice, proving theorems in logic or mathematics. Others are not, because they can be done by all normal adults irrespective of educational background (and sometimes by non-human animals too), and typically involve no conscious control: seeing things in sunlight and shadows, finding a path through cluttered terrain, fitting pegs into holes, speaking one's own native tongue, and using one's common sense. Because it covers AI research dealing with both these classes of mental capacity, this definition is preferable to one describing AI as making computers do "things that would require intelligence if done by people." However, it presupposes that computers could do what minds can do, that they might really diagnose, advise, infer, and understand. One could avoid this problematic assumption (and also side-step questions about whether computers do things in the same way as we do) by defining AI instead as "the development of computers whose observable performance has features which in humans we would attribute to mental processes." This bland characterization would be acceptable to some AI workers, especially amongst those focusing on the production of technological tools for commercial purposes. But many others would favour a more controversial definition, seeing AI as the science of intelligence in general-or, more accurately, as the intellectual core of cognitive science. As such, its goal is to provide a systematic theory that can explain (and perhaps enable us to replicate) both the general categories of intentionality and the diverse psychological capacities grounded in them. (Boden, 1990b, pp. 1-2)
       Because the ability to store data somewhat corresponds to what we call memory in human beings, and because the ability to follow logical procedures somewhat corresponds to what we call reasoning in human beings, many members of the cult have concluded that what computers do somewhat corresponds to what we call thinking. It is no great difficulty to persuade the general public of that conclusion since computers process data very fast in small spaces well below the level of visibility; they do not look like other machines when they are at work. They seem to be running along as smoothly and silently as the brain does when it remembers and reasons and thinks. On the other hand, those who design and build computers know exactly how the machines are working down in the hidden depths of their semiconductors. Computers can be taken apart, scrutinized, and put back together. Their activities can be tracked, analyzed, measured, and thus clearly understood-which is far from possible with the brain. This gives rise to the tempting assumption on the part of the builders and designers that computers can tell us something about brains, indeed, that the computer can serve as a model of the mind, which then comes to be seen as some manner of information processing machine, and possibly not as good at the job as the machine. (Roszak, 1994, pp. xiv-xv)
       The inner workings of the human mind are far more intricate than the most complicated systems of modern technology. Researchers in the field of artificial intelligence have been attempting to develop programs that will enable computers to display intelligent behavior. Although this field has been an active one for more than thirty-five years and has had many notable successes, AI researchers still do not know how to create a program that matches human intelligence. No existing program can recall facts, solve problems, reason, learn, and process language with human facility. This lack of success has occurred not because computers are inferior to human brains but rather because we do not yet know in sufficient detail how intelligence is organized in the brain. (Anderson, 1995, p. 2)

    Historical dictionary of quotations in cognitive science > Artificial Intelligence

  • 5 butaca

    f.
    1 armchair (forniture).
    2 seat.
    3 arm chair, armchair, easy chair, seat.
    * * *
    1 (sillón) armchair
    2 TEATRO seat
    * * *
    noun f.
    2) seat
    * * *
    SF
    1) (=sillón) armchair, easy chair
    2) (Teat) seat

    butaca de platea, butaca de patio — seat in the stalls o (EEUU) orchestra

    * * *
    a) ( con respaldo) (esp Esp) armchair; ( sin respaldo) (esp AmL) stool
    b) (en teatro, cine) seat

    butaca de patio — (Esp) orchestra (AmE) o (BrE) stall seat

    * * *
    = armchair, easy chair.
    Ex. Using digital interactive television, the experiments will enable the public to receive health advice and information from their armchairs.
    Ex. The number of easy chairs frequently seems to be far more than is necessary.
    ----
    * butaca de primera fila = ringside seat, ringside ticket.
    * patio de butacas = orchestra seats.
    * patio de butacas, el = stall, the.
    * * *
    a) ( con respaldo) (esp Esp) armchair; ( sin respaldo) (esp AmL) stool
    b) (en teatro, cine) seat

    butaca de patio — (Esp) orchestra (AmE) o (BrE) stall seat

    * * *
    = armchair, easy chair.

    Ex: Using digital interactive television, the experiments will enable the public to receive health advice and information from their armchairs.

    Ex: The number of easy chairs frequently seems to be far more than is necessary.
    * butaca de primera fila = ringside seat, ringside ticket.
    * patio de butacas = orchestra seats.
    * patio de butacas, el = stall, the.

    * * *
    correrle la butaca a algn ( Col); to edge sb out
    2 (en un teatro, cine) seat
    butaca de patio ( Esp); (front) orchestra seat ( AmE), stall seat ( BrE), seat in the stalls ( BrE)
    * * *

    butaca sustantivo femenino
    a) ( con respaldo) (esp Esp) armchair;

    ( sin respaldo) (esp AmL) stool
    b) (en teatro, cine) seat;

    ◊ butaca de patio (Esp) orchestra (AmE) o (BrE) stall seat

    butaca sustantivo femenino
    1 (mueble) armchair
    2 (localidad) seat
    butaca de platea o patio, seat in the stalls, US orchestra seat
    ' butaca' also found in these entries:
    Spanish:
    localidad
    English:
    armchair
    - armrest
    - chair
    - arm
    - easy
    * * *
    butaca nf
    1. [mueble] armchair
    2. [localidad] seat
    Esp butaca de entresuelo seat in the dress circle;
    butaca de patio Br seat in the stalls, US orchestra seat
    * * *
    f
    1 ( sillón) armchair
    2 TEA seat
    * * *
    butaca nf
    1) sillón: armchair
    2) : seat (in a theatre)
    3) Mex : pupil's desk
    * * *
    1. (en casa) armchair

    Spanish-English dictionary > butaca

  • 6 en curso

    = in process, underway [under way], in progress, ongoing [on-going], afoot, current, under preparation
    Ex. An obvious example is the search to establish whether a particular book is on order, in process, on the shelves, or already loaned out.
    Ex. Experiments in improved document delivery systems, and the establishment of networks between libraries are under way.
    Ex. Replace the question mark in front of 'quit' with any character to indicate that you have decided not to make the file entry now in progress.
    Ex. This study has many implications for an ongoing COMARC effort beyond the present pilot project because it is evident that a very small number of libraries can furnish machine-readable records with full LC/MARC encoding.
    Ex. There is also a scheme afoot to help services create specialized data bases of their own using ECLAS norms.
    Ex. MEDLINE includes more than 9.2 million records from 3,900 current biomedial journals published in the U.S. and 70 other countries.
    Ex. There is a new improved system, now under preparation, which will eventually replace the current version.
    * * *
    = in process, underway [under way], in progress, ongoing [on-going], afoot, current, under preparation

    Ex: An obvious example is the search to establish whether a particular book is on order, in process, on the shelves, or already loaned out.

    Ex: Experiments in improved document delivery systems, and the establishment of networks between libraries are under way.
    Ex: Replace the question mark in front of 'quit' with any character to indicate that you have decided not to make the file entry now in progress.
    Ex: This study has many implications for an ongoing COMARC effort beyond the present pilot project because it is evident that a very small number of libraries can furnish machine-readable records with full LC/MARC encoding.
    Ex: There is also a scheme afoot to help services create specialized data bases of their own using ECLAS norms.
    Ex: MEDLINE includes more than 9.2 million records from 3,900 current biomedial journals published in the U.S. and 70 other countries.
    Ex: There is a new improved system, now under preparation, which will eventually replace the current version.

    Spanish-English dictionary > en curso

  • 7 en marcha

    (adj.) = underway [under way], ongoing [on-going], afoot, under preparation, moving
    Ex. Experiments in improved document delivery systems, and the establishment of networks between libraries are under way.
    Ex. This study has many implications for an ongoing COMARC effort beyond the present pilot project because it is evident that a very small number of libraries can furnish machine-readable records with full LC/MARC encoding.
    Ex. There is also a scheme afoot to help services create specialized data bases of their own using ECLAS norms.
    Ex. There is a new improved system, now under preparation, which will eventually replace the current version.
    Ex. A newborn baby has fallen through the toilet on a moving train after being prematurely born.
    * * *
    (adj.) = underway [under way], ongoing [on-going], afoot, under preparation, moving

    Ex: Experiments in improved document delivery systems, and the establishment of networks between libraries are under way.

    Ex: This study has many implications for an ongoing COMARC effort beyond the present pilot project because it is evident that a very small number of libraries can furnish machine-readable records with full LC/MARC encoding.
    Ex: There is also a scheme afoot to help services create specialized data bases of their own using ECLAS norms.
    Ex: There is a new improved system, now under preparation, which will eventually replace the current version.
    Ex: A newborn baby has fallen through the toilet on a moving train after being prematurely born.

    Spanish-English dictionary > en marcha

  • 8 planificado

    adj.
    planned.
    past part.
    past participle of spanish verb: planificar.
    * * *
    = ordered, planned, staged, scheduled, formulated.
    Ex. Work in a duly ordered community should be made attractive by the consciousness of usefulness, by variety, and by being exercised amidst pleasurable surroundings.
    Ex. Every library, regardless of size or type, needs a planned, continuing training program.
    Ex. Long-range planning is essential and necessary as emergency measures, or as first steps in a staged plan of remodelling.
    Ex. Experiments using either a completely flexible approach or strictly scheduled library lessons show that a mixture of both is best.
    Ex. Budgeting in libraries, which is usually on a yearly cycle, is the primary means by which formulated plans can be carried out.
    ----
    * distribuir de un modo planificado = zone.
    * no planificado = unplanned.
    * planificado con antelación = pre-planned.
    * planificado previamente = pre-planned.
    * * *
    = ordered, planned, staged, scheduled, formulated.

    Ex: Work in a duly ordered community should be made attractive by the consciousness of usefulness, by variety, and by being exercised amidst pleasurable surroundings.

    Ex: Every library, regardless of size or type, needs a planned, continuing training program.
    Ex: Long-range planning is essential and necessary as emergency measures, or as first steps in a staged plan of remodelling.
    Ex: Experiments using either a completely flexible approach or strictly scheduled library lessons show that a mixture of both is best.
    Ex: Budgeting in libraries, which is usually on a yearly cycle, is the primary means by which formulated plans can be carried out.
    * distribuir de un modo planificado = zone.
    * no planificado = unplanned.
    * planificado con antelación = pre-planned.
    * planificado previamente = pre-planned.

    Spanish-English dictionary > planificado

  • 9 programado

    adj.
    1 programed; planned (visita).
    2 programmed, pre-arranged, scheduled.
    past part.
    past participle of spanish verb: programar.
    * * *
    ADJ planned, scheduled
    * * *
    = scripted, programmatic, time-oriented, scheduled, planned, slated, programmed.
    Ex. A program consisting of readings, improvised scenes, and scripted extracts from the author's work is the kind of project I have in mind.
    Ex. Their experience to date has underscored the need for programmatic yet flexible strategies when planning, installing and maintaining library computer systems.
    Ex. All actions plans -- which are also measurable and time-oriented -- are tied directly to objectives.
    Ex. Experiments using either a completely flexible approach or strictly scheduled library lessons show that a mixture of both is best.
    Ex. Every library, regardless of size or type, needs a planned, continuing training program.
    Ex. Reservations are held for 20 minutes after the slated event start time.
    Ex. He says the evidence is overwhelming that we already live in a programmed reality.
    ----
    * actividad programada = planned activity.
    * enseñanza programada = programmed instruction.
    * programado cuidadosamente = carefully-sequenced.
    * tener programado su finalización = be scheduled for completion.
    * * *
    = scripted, programmatic, time-oriented, scheduled, planned, slated, programmed.

    Ex: A program consisting of readings, improvised scenes, and scripted extracts from the author's work is the kind of project I have in mind.

    Ex: Their experience to date has underscored the need for programmatic yet flexible strategies when planning, installing and maintaining library computer systems.
    Ex: All actions plans -- which are also measurable and time-oriented -- are tied directly to objectives.
    Ex: Experiments using either a completely flexible approach or strictly scheduled library lessons show that a mixture of both is best.
    Ex: Every library, regardless of size or type, needs a planned, continuing training program.
    Ex: Reservations are held for 20 minutes after the slated event start time.
    Ex: He says the evidence is overwhelming that we already live in a programmed reality.
    * actividad programada = planned activity.
    * enseñanza programada = programmed instruction.
    * programado cuidadosamente = carefully-sequenced.
    * tener programado su finalización = be scheduled for completion.

    Spanish-English dictionary > programado

  • 10 sillón

    m.
    sofa, easy chair, armchair.
    * * *
    1 armchair
    2 (de montar) side-saddle
    * * *
    noun m.
    * * *
    SM
    1) (=butaca) armchair, easy chair; LAm (=mecedora) rocking chair

    sillón de hamaca — LAm rocking chair

    2) [de montar] sidesaddle
    * * *
    masculino armchair, easy chair
    * * *
    = easy chair, lounge chair, armchair.
    Ex. The number of easy chairs frequently seems to be far more than is necessary.
    Ex. An adjustable seating rig was used to create the three-dimensional shape of a static lounge chair.
    Ex. Using digital interactive television, the experiments will enable the public to receive health advice and information from their armchairs.
    ----
    * viajero de sillón = armchair traveller.
    * * *
    masculino armchair, easy chair
    * * *
    = easy chair, lounge chair, armchair.

    Ex: The number of easy chairs frequently seems to be far more than is necessary.

    Ex: An adjustable seating rig was used to create the three-dimensional shape of a static lounge chair.
    Ex: Using digital interactive television, the experiments will enable the public to receive health advice and information from their armchairs.
    * viajero de sillón = armchair traveller.

    * * *
    armchair, easy chair
    sentado en un sillón sitting in an armchair
    Compuestos:
    wing chair
    * * *

     

    sillón sustantivo masculino
    armchair, easy chair
    sillón sustantivo masculino armchair
    ' sillón' also found in these entries:
    Spanish:
    abultar
    - brazo
    - dormida
    - dormido
    - frita
    - frito
    - mullida
    - mullido
    - oreja
    - tirarse
    - tresillo
    - cabezal
    - estropeado
    - forrado
    - forrar
    - forro
    - funda
    - recostar
    - ser
    - tapizar
    English:
    armchair
    - armrest
    - chair
    - doze
    - easy chair
    - reclining chair
    - arm
    - curl
    - easy
    - flop
    - into
    - lower
    - sink
    * * *
    armchair
    sillón de orejas wing chair
    * * *
    m armchair, easy chair
    * * *
    sillón nm, pl sillones : armchair, easy chair
    * * *
    sillón n armchair

    Spanish-English dictionary > sillón

  • 11 показать

    (= показывать) show, register, read, exhibit, reveal, depict, display, illustrate, indicate
    • Анализ этих уравнений показывает, что... - Inspection of these equations shows that...
    • Более совершенным рассуждением можно показать, что... - By a more refined argument it can be shown that...
    • Более того, данное обсуждение показывает, что... - The discussion shows, moreover, that...
    • Более точное вычисление показывает, что... - A more exact calculation shows that...
    • Быстро покажем, что... - It will be shown in a moment that...
    • В главе 2 мы вернемся к этому вопросу и попытаемся показать, что... - In Chapter 2 we shall return to this question and try to show that...
    • В предыдущем параграфе мы уже показали, как исследовать... - In the preceding section we have shown how to investigate...
    • Важно, что исследование также показывает, что... - Importantly, the study also shows that...
    • Нам остается лишь показать, что... - All that remains is to show that...
    • Вычисления показали, что... - Computations have shown that...
    • Далее будет показано, что... - It will be shown in the sequel that...
    • Далее можно показать, что... - It can further be shown that...
    • Далее, легко показать, что... - It is easy to show, furthermore, that...
    • Далее, мы показываем, что существуют функции, нарушающие это неравенство при к > 2... - Next, we show that there are functions which violate this inequality for к > 2.
    • Дальнейшее исследование, однако, показало, что... - Further investigation, however, has shown that...
    • Дальнейшее применение соотношения (1) показывает, что... - Further application of (1) shows that...
    • Данная формулировка показывает сразу несколько аспектов. - The formulation reveals several things.
    • Данные примеры должны показать, что... - These examples should make it clear that...
    • Данный подход показывает, что... - The present approach shows that...
    • Данный результат следует немедленно, если мы можем показать, что... - The result will follow immediately if we can show that...
    • Действительно, в этом случае мы могли бы показать, что... - Indeed, in this case, we may show that...
    • Довольно громоздкое вычисление показывает, что... - A somewhat lengthy computation shows that...
    • Еще более удивительным является пример, найденный Смитом [11], который показывает, что... - Even more startling is an example due to Smith [11], which shows that...
    • Еще раз, это показывает зависимость... - Again, this demonstrates the dependence of...
    • Здесь мы можем только показать, что... - We can show here only that...
    • Изучение... показывает, что... - Studies of... indicate that...
    • Используя определения F и G, легко показать, что... - It is a simple matter, using the definitions of F and G, to show that...
    • Используя эти соотношения, мы легко можем показать по индукции, что... - From these relations we can easily show by induction that...
    • Исследование уравнения (4) показывает, что... - An examination of (4) shows that...
    • Исследования показали важность... - The studies demonstrated the importance of...
    • Видимо, все это показывает, что... - All this seems to show that...
    • Как легко показать, используя..., этим можно полностью пренебречь. - It is utterly negligible, as we can easily show by...
    • Как показывает следующий пример, это не обязательно выполняется. - This is not necessarily the case, as the following example illustrates.
    • Как приложение данного результата, мы покажем, что... - As an application of this result, we show that...
    • Количественный анализ этих результатов показывает, что... - A quantitative analysis of these results shows that...
    • Легко показать, что... - It is easily shown that...
    • Легкое изменение приведенного выше рассуждения показывает, что... - A slight modification of the above reasoning shows that...
    • Метод анализа, намеченный в предыдущем абзаце, показывает... - The method of analysis outlined in the last paragraph shows...
    • Многие годы экспериментов показали, что... - Many years of experimentation have shown that...
    • Можно показать, что в целом это заключение является справедливым. - It can be shown that this conclusion is generally valid.
    • Можно показать, что они являются как достаточными, так и необходимыми. - It may be shown that they are sufficient as well as necessary.
    • Можно показать, что это эквивалентно условию... - This can be shown to be equivalent to the condition that...
    • Мы должны показать, что... - We have to show that...
    • Мы можем показать это на простом примере. - We can demonstrate this with a simple example.
    • Мы оставляем для самостоятельного решения задачу показать, что... - We leave it as a problem to show that...
    • Мы покажем теперь, что это не справедливо. - We shall now show that this is not the case.
    • Мы хотим явно показать, что... - We wish to show explicitly that...
    • На самом деле мы лишь показали, что... - We have in fact only shown that...
    • На самом деле мы можем показать, что... - We can show, in fact, that...
    • На самом деле, его исследование, похоже, показывает, что... - Actually his investigation seemed to show that...
    • Нам остается показать, что... - We need only to show that...; It remains for us to show that...
    • Намеченные выше вычисления показывают, что... - The calculations outlined above show that...
    • Например, мы покажем, что... - We shall show, for example, that...
    • Например, не слишком трудно показать, что... - For example, it is not too difficult to show that...
    • Например, экспериментально было показано, что... - For example, it has been shown experimentally that...
    • Наш простой пример показывает, что... - Our simple example demonstrates that...
    • Наши цифры показывают, что... - Our figures show that...
    • Небольшое изменение этого доказательства показывает, что... - A minor modification of the proof shows that...
    • Небольшое размышление показывает, что... - A moment's reflection will indicate that...
    • Недавние эксперименты показали, что... - Recent experiments have shown that...
    • Недавняя работа показала, что... - Recent work has shown that...
    • Недолгое размышление покажет, что... - A moment's thought will show that...
    • Несколько иное рассуждение показывает, что... - A slightly different argument shows that...
    • Общие наблюдения показывают... - It is a matter of common observation that...
    • Один тип... показан на рис. 2. - One type of... is shown in Figure 2.
    • Однако, мы хотим показать, что... - We wish to show, however, that...
    • Однако мы уже показали, что... - But we have already shown that...
    • Однако следующая теорема показывает, что... - The next theorem shows, however, that...
    • Он показал существование глобального по времени решения. - Не showed existence of a global-in-time weak solution.
    • Описанные здесь исследования показывают, что... - The studies described here show that...
    • Исторический опыт показывает, что... - Historical experience shows that...
    • Остается показать, что... - It remains to be shown that...
    • Оценка показывает, что... - It is estimated that...
    • Подобное же рассуждение показывает нам... - A similar argument will show that...
    • Подобные вычисления показывают, что... - Similar computations reveal that...
    • Подобным образом можно показать, что... - In like manner it can be shown that...
    • Подробный вывод показал бы, что... - A detailed derivation would show that...
    • Подстановка этой величины в уравнение (1) показывает, что... - Insertion of this value into equation (1) shows that...
    • Полная теория показывает, что... - Detailed theory shows that...
    • Помимо всего, нам необходимо показать, что... - Above all, we need to show that...
    • Помимо прочих следствий, данный результат показывает, что... - Among other things, this result shows that...
    • Последнее разложение показывает, что... - The latter expansion shows that...
    • Это может быть трудно показать на практике. - In practice this may be difficult to demonstrate.
    • Предварительные результаты показывают, что... - The preliminary results suggest that...
    • Пренебрегая этими эффектами, легко показать, что... - Neglecting these effects it is easy to show that...
    • Приведенный выше пример 2 показывает, что... - Example 2 above shows that...
    • Придерживаясь тех же обозначений, что и в первом параграфе, мы покажем, что... - With the same notation as in Section 1, we shall show that...
    • Применение данного метода показывает... - An application of this process shows...
    • Продолжая действовать так же, как в параграфе 1, мы можем показать, что... - Proceeding as in Section 1, we may show that...
    • Ранее мы показывали, что... - Earlier we showed that...
    • Рассуждение, приведенное в конце последней главы, показывает, что... - The argument at the end of the last chapter shows that...
    • Рассуждения Гильберта относительно этого уравнения показывают, что... - Hilbert's discussion of this equation shows that...
    • Реальные вычисления, однако, показывают, что... - Actual computations show, however, that...
    • Результат показан ниже. - The result is recorded below.
    • С другой стороны, эксперименты показывают, что... - On the other hand, experiments show that...
    • Следующая серия примеров (= иллюстраций) показывает... - The following series of illustrations shows...
    • Следующая теорема позволяет нам показать, что... - The following theorem enables us to show that...
    • Следующие задачи помогут показать, что важность... - The following problems will help show that importance of...
    • Следующие примеры покажут важность данного определения. - Examples will bring out the significance of this definition.
    • Следующий пример показывает, что... - The following example shows that...
    • Следующим шагом мы покажем, что... - Next it will be shown that...
    • Совершенно аналогичным образом можно показать, что... - It can be shown by an exactly similar process that...
    • Сравнение А и В показывает, что... - A comparison of A and В shows that...
    • Сравнение с точным результатом (2) показывает, что... - A comparison with the exact result (2) shows that...
    • Ссылка на уравнение (6) показывает, что... - Reference to equation (6) shows that...
    • Стандартные вычисления показывают, что... - A routine calculation shows that...
    • Таблицы данных показывают, что... - The tables show that...
    • Теоретические соображения показывают, что... - Theoretical considerations show that...
    • Теперь мы покажем, что допустимо (предполагать и т. п.)... - We shall now show that it is permissible to...
    • Термометр показывает 20 градусов ниже нуля. - The thermometer shows/reads 20 degrees below zero.
    • Типичный... показан на рис. 2. - A typical... is shown in Figure 2.
    • То же самое рассуждение показывает, что... - The same reasoning shows that...
    • То же самое рассуждение четко показывает, что... - The same reasoning evidently shows that...
    • То же самое рассуждение, что и выше, показывает, что... - The same argument as above shows that...
    • То, что мы показали, это... - What we have shown is that...
    • Только что проделанные вычисления показывают нам, что... - The result just calculated shows us that...
    • Рис. 2 показывает результаты, полученные... - Fig. 2 shows results obtained for Equation (2.8).
    • Цель заключается в том, чтобы показать, что... - The aim is to show that...
    • Чтобы доказать теорему, достаточно показать, что... - То prove the theorem it is sufficient to show that...
    • Чтобы завершить доказательство, нам остается показать, что... - То complete the proof, we need to demonstrate that...
    • Чтобы показать, что обратное несправедливо, мы должны... - То show that the converse is false, we must...
    • Чтобы показать, что это невозможно, давайте... - То show that this is not possible, let...
    • Чтобы это доказать, нам остается лишь показать, что... - То prove this we need only show that...
    • Эксперимент подтверждает это, однако также
    (= одновременно) показывает, что... - Experiment confirms this but also shows that...
    • Эксперимент показывает, что... - Experiment shows that...; Experiment tells us that...
    • Эксперименты с полупроводниками показывают, что... - Experiments with semiconductors show that...
    • Эти и многие другие примеры показывают, что... - These and many other examples show that...
    • Эти равенства позволяют нам показать, что... - These identities enable us to show that...
    • Эти рассуждения показывают нам, что... - These considerations show us that...
    • Эти результаты ясно показывают, что... - These results clearly show that...
    • Это доказательство легко переделывается для того, чтобы показать, что... - The proof is easily adapted to show that...
    • Это могло бы быть легко показано при использовании условия... - This may be shown readily by employing the condition that...
    • Это можно показать двумя методами. - This can be seen in two ways.
    • Это показывает (одно) важное ограничение (чего-л). - This demonstrates an important limitation of...
    • Это показывает еще раз, что... - This shows once more that...
    • Это показывает, что невозможно... - This shows that it is impossible to...
    • Это простое соотношение немедленно показывает, что... - This simple relation shows immediately that...
    • Это соотношение также показывает, что... - This relation also shows that...
    • Это ясно показано на рис. 1, которая представляет результаты (чего-л). - This is clearly demonstrated in Figure 1 which shows the results of...
    • Этот пример показывает, что может быть необходимым... - This example shows that it may be necessary to...
    • Этот рисунок четко показывает принципиальные различия между... - This figure clearly illustrates the basic differences between...
    • Этот эффект будет обсуждаться в главе 2, где будет показано, что... - This effect will be discussed in Chapter 2, where it will be shown that...

    Русско-английский словарь научного общения > показать

  • 12 Montgolfier, Joseph-Michel

    SUBJECT AREA: Aerospace
    [br]
    b. 26 August 1740 Vidalon-lès-Annonay, France
    d. 26 June 1810 Balaruc-les-Bains, France
    [br]
    French ballooning pioneer who, with his brother Jacques-Etienne (b. 6 January 1745 Vidalon-lès-Annonay, France; d. 2 August 1799, Serriers, France), built the first balloon to carry passengers on a "free" flight.
    [br]
    Joseph-Michel and Jacques-Etienne Montgolfier were papermakers of Annonay, near Lyon. Joseph made the first experiments' after studying smoke rising from a fire and assuming that the smoke contained a gas which was lighter than air: of course, this lighter-than-air gas was just hot air. Using fine silk he made a small balloon with an aperture in its base, then, by burning paper beneath this aperture, he filled the balloon with hot air and it rose to the ceiling. Jacques-Etienne joined his brother in further experiments and they progressed to larger hot-air balloons until, by October 1783, they had constructed one large enough to lift two men on tethered ascents. In the same month Joseph-Michel delivered a paper at the University of Lyon on his experiments for a propulsive system by releasing gas through an opening in the side of a balloon; unfortunately, there was not enough pressurefor an effective jet. Then, on 21 November 1783, the scientist Pilâtre de Rozier and the Marquis d'Arlandes ascended on a "free" flight in a Montgolfier balloon. They departed from the grounds of a château in the Bois de Boulogne in Paris on what was to be the world's first aerial journey, covering 9 km (5/2 miles) in 25 minutes.
    Ballooning became a popular spectacle with initial rivalry between the hot-air Montgolfières and the hydrogen-filled Charlières of J.A.C. Charles. Interest in hot-air balloons subsided, but was revived in the 1960s by an American, Paul E. Yost. His propane-gas burner to provide hot-air was a great advance on the straw-burning fire-basket of the Montgolfiers.
    [br]
    Principal Honours and Distinctions
    Légion d'honneur.
    Further Reading
    C.C.Gillispie, 1983, The Montgolfier Brothers and the Invention of Aviation 1783–1784, Princeton, NJ (one of the publications to commemorate the bicentenary of the Montgolfiers).
    L.T.C.Rolt, 1966, The Aeronauts, London (describes the history of balloons). C.Dollfus, 1961, Balloons, London.
    JDS

    Biographical history of technology > Montgolfier, Joseph-Michel

  • 13 Chappe, Claude

    SUBJECT AREA: Telecommunications
    [br]
    b. 25 December 1763 Brulon, France
    d. 23 January 1805 Paris, France
    [br]
    French engineer who invented the semaphore visual telegraph.
    [br]
    Chappe began his studies at the Collège de Joyeuse, Rouen, and completed them at La Flèche. He was educated for the church with the intention of becoming an Abbé Commendataire, but this title did not in fact require him to perform any religious duties. He became interested in natural science and amongst other activities he carried out experiments with electrically charged soap bubbles.
    When the bénéfice was suppressed in 1781 he returned home and began to devise a system of telegraphic communication. With the help of his three brothers, particularly Abraham, and using an old idea, in 1790 he made a visual telegraph with suspended pendulums to relay coded messages over a distance of half a kilometre. Despite public suspicion and opposition, he presented the idea to the Assemblée Nationale on 22 May 1792. No doubt due to the influence of his brother, Ignace, a member of the Assemblée Nationale, the idea was favourably received, and on 1 April 1793 it was referred to the National Convention as being of military importance. As a result, Chappe was given the title of Telegraphy Engineer and commissioned to construct a semaphore (Gk. bearing a sign) link between Paris and Lille, a distance of some 240 km (150 miles), using twenty-two towers. Each station contained two telescopes for observing the adjacent towers, and each semaphore consisted of a central beam supporting two arms, whose positions gave nearly two hundred possible arrangements. Hence, by using a code book as a form of lookup table, Chappe was able to devise a code of over 8,000 words. The success of the system for communication during subsequent military conflicts resulted in him being commissioned to extend it with further links, a work that was continued by his brothers after his suicide during a period of illness and depression. Providing as it did an effective message speed of several thousand kilometres per hour, the system remained in use until the mid-nineteenth century, by which time the electric telegraph had become well established.
    [br]
    Further Reading
    R.Appleyard, 1930, Pioneers of Electrical Communication.
    International Telecommunications Union, 1965, From Semaphore to Satellite, Geneva.
    KF

    Biographical history of technology > Chappe, Claude

  • 14 результат

    (см. также факт) result, effect, consequence, finding
    • Результат более общего типа формулируется следующим образом. - The following is a more general result of the same kind.
    • Более определенные результаты были сформулированы Смитом [1]. - More definite results have been formulated by Smith [1].
    • В действительности данный результат означает, что... - This result means, in effect, that...
    • В результате практически все, работающие в данной области, желали допустить, что... - As a result, practically everyone in the field was willing to admit that...
    • В результате преобразования уравнение (1) принимает вид... - After simplification equation (1) becomes...
    • В результате следует заключить, что... - Consequently, one must conclude that...
    • В результате существовала тенденция... - As a result, there has been a tendency to...
    • В результате этого происходит заметное уменьшение... - This results in a marked decrease in...
    • В результате, теперь достаточно лишь доказать, что... - Consequently it is enough to prove that...
    • В соответствии с данным результатом мы можем определить... - In accordance with this result, we may identify...
    • В то же самое время, данные результаты указывают, что... - At the same time, the results indicate that...
    • В этом приложении мы приводим результаты... - In this appendix we present the results of...
    • Важность данного результата состоит в том, что он четко устанавливает... - The importance of this result is that it clearly establishes...
    • Возможно, наилучший способ сформулировать результаты - это... - Probably the best way to express the results is to use...
    • Можно грубо выразить (= сформулировать) тот же результат, говоря, что... - This result is expressed roughly by saying that...
    • Данный результат должен выглядеть знакомым любому, кто изучал... - This result should look familiar to anyone who has studied...
    • Данный результат допускает простую геометрическую интерпретацию. - The result admits a simple geometrical interpretation.
    • Данный результат имеет простую физическую интерпретацию. - This result has a simple physical interpretation.
    • Данный результат может быть сформулирован в несколько более простой форме следующим образом. - This result can be written in a slightly simpler form as follows.
    • Данный результат находится в полном согласии с... - The result is in perfect agreement with...
    • Данный результат объясняет/разъясняет... - This result explains...
    • Данный результат объясняется и качественно, и количественно предположением, что... - This result is both qualitatively and quantitatively explained by the assumption that...
    • Данный результат окажется полезным при обсуждении (чего-л). - This result will prove useful in the discussion of...
    • Данный результат остается справедливым, если... - The result remains true if...
    • Данный результат принадлежит Гауссу. - This result is due to Gauss.
    • Данный результат следует немедленно, если мы можем показать, что... - The result will follow immediately if we can show that...
    • Данный результат согласуется с... - This result is in agreement with...
    • Данный результат также может быть получен с применением... - This result can also be obtained by the application of...
    • Данный результат, который можно легко проверить, состоит в том, что... - The result, which may be easily verified, is...
    • Для того, чтобы доказать этот результат, мы должны, во-первых, вычислить... - In order to prove this result we must first calculate...
    • Другой интересный результат, принадлежащий Риману, состоит в том, что... - Another interesting result, due to Riemann, is. that...
    • Другой способ получения того же результата появляется, если заметить, что... - Another way of obtaining the same result is to note that...
    • Его результаты могут быть подытожены следующей теоремой. - His results may be summed up in the following theorem.
    • Если мы используем результат (7), то видим, что... - If we make use of the result (7) we see that...
    • Еще один интересный результат - это... - One further result of interest is that...
    • Еще одним следствием этих результатов является то, что... - One further consequence of these results is that...
    • За исключение последнего, все эти результаты немедленно вытекают из того факта, что... - All these results except the last follow immediately from the fact that...
    • Значение этого последнего результата состоит в том, что... - The significance of this last result is that...
    • Значительно лучший результат мог быть получен, если использовать... - A much better result would have been obtained using...
    • Из... можно вывести много полезных результатов. - Many useful results may be deduced from...
    • Из вышеуказанного утверждения следует дополнительный результат. - The above argument gives us the following additional result.
    • Из предыдущих результатов вытекает, что... - It follows from the foregoing results that...
    • Из процитированных выше результатов следует, что... - From the results quoted above it follows that...
    • Из результатов последнего параграфа становится ясно, что... - It is apparent from the last section that...
    • Из результатов экспериментов Смит [1] заключил, что... - From the results of experiments, Smith [1] concluded that...
    • Из этих результатов вытекает, что... - These results imply that...
    • Используя результат (10), мы видим, что... - Making use of the result (10) we see that...
    • Используя этот результат... - With this result we can...
    • Используя этот результат, мы можем заключить... - With the help of this result we can deduce...
    • Исследование, продолжающееся два десятилетия, принесло удивительно немного результатов относительно... - Research spanning two decades has yielded surprisingly few results on...
    • Исходя из этих результатов, можно сконструировать... - Prom these results it is possible to construct...
    • Как мы можем понимать этот результат? - How can we understand this result?
    • Как мы уже видели, те же самые результаты предсказываются для... - As we have seen, the same results are predicted for...
    • Как побочный результат теоремы 4... - As a by-product of Theorem 4, we also obtain the convergence of...
    • Как приложение данного результата, мы покажем, что... -As an application of this result, we show that...
    • Как это показано ниже, этот результат можно также вывести непосредственно. - This result may also be derived directly as follows.
    • Количественный анализ этих результатов показывает, что... - A quantitative analysis of these results shows that...
    • Методом математической индукции этот результат может быть распространен на... - This result can be extended, by mathematical induction, to...
    • Многие идеи и результаты последней главы могут быть распространены на случай... - Many of the ideas and results of the last chapter can now be extended to the case of...
    • Многие из наших более ранних результатов могут быть лучше поняты, если... - Many of ounearlier results can be better understood if...
    • Можно было бы интерпретировать, что эти результаты означают, что... - These results might be interpreted to mean that...
    • Можно понять эти результаты, рассматривая... - One can understand these results by considering...
    • Мы используем этот результат, чтобы... - We shall apply this result to...
    • Мы могли бы взглянуть на данный результат с другой точки зрения. - We may look at this result in another way.
    • Мы могли бы подытожить эти результаты утверждением, что... - We may summarize these results with the statement that...
    • Мы могли бы получить этот же результат более просто, заметив, что... - We could have obtained this result more easily by noting that...
    • Мы могли бы получить этот результат другим способом. - We could obtain this result by a different argument.
    • Мы можем использовать этот результат, чтобы определить (= ввести)... - We can use this result to define...
    • Мы можем подытожить предыдущие результаты в простых терминах, замечая, что... - We can summarize the preceding results in simpler terms by noting that...
    • Мы можем получить данный результат следующим образом. - We can obtain the result as follows.
    • Мы можем применить некоторые результаты этой главы, чтобы проиллюстрировать... - We may apply some of the results of this chapter to illustrate...
    • Мы можем сформулировать этот результат в виде теоремы. - We can state the result as a theorem.
    • Мы не можем ожидать выполнения этого результата в случае... - This result cannot be expected to hold for...
    • Мы применим наши результаты к одному простому случаю. - We shall apply our results to a simple case.
    • Мы только что доказали следующий результат. - We have proved the following result.
    • Мы хотим взглянуть на этот результат с несколько иной точки зрения. - We want to look at this result from a slightly different, point of view.
    • На основе данных результатов давайте теперь оценим... - On the basis of these results, let us now estimate...
    • Наиболее важными результатами являются результаты, касающиеся (= связанные с)... - The most important results are those concerning...
    • Наилучший результат получается, когда/ если... - The best result is obtained when...
    • Наш основной результат будет заключаться в том, что... - Our main result will be that...
    • Наш следующий результат демонстрирует, что... - Our next result demonstrates that...
    • Наши первые результаты описывают соотношения между... - Our first results deal with the relations between...
    • Наши результаты пересекаются с результатами Смита [1], который... - Our results overlap those of Smith [1], who...
    • Наши результаты предпочтительны по сравнению с результатами Смита [1]. - Our results compare favorably with those of Smith [1].
    • Немедленным следствием предыдущего результата является тот факт, что... - An immediate corollary of the above result is the fact that...
    • Несколько более простой результат получается, если мы... - A somewhat simpler result is obtained if we...
    • Несомненно, данные результаты не зависят от... - These results are of course independent of...
    • Нижеследующее является обобщением результата, доказанного Смитом [1]. - The following is a generalization of a result proved by Smith [1].
    • Объединяя эти результаты, мы видим, что... - On combining these results we see that...
    • Обычно это происходит в результате... - This usually occurs as a result of...
    • Однако имеются другие результаты, которые... - There are other results, however, which...
    • Однако окончательные результаты теории не могут зависеть от... - But the final results of the theory must not depend on...
    • Однако подобные усилия приносят положительный результат, только если... - Such efforts, however, are successful only if...
    • Однако у этого результата имеется другое приложение. - However, this result has another application.
    • Однако этот результат действительно предполагает, что... - The result does assume, however, that...
    • Одним интересным свойством этих результатов является то, что они указывают... - One interesting feature of these results is that they indicate...
    • Очевидно, данный результат мог бы быть получен, не используя... - Obviously this result could have been obtained without the use of...
    • Очевидно, что подобный результат справедлив (и) для... - Obviously a similar result is true for...
    • Очевидно, что эти результаты выполняются для любого... - These results clearly hold for any...
    • Очевидной интерпретацией данного результата является... - The straightforward interpretation of this result is...
    • Перед тем как установить только что упомянутые результаты, необходимо (рассмотреть и т. п.)... - Before establishing the results just mentioned it is necessary to...
    • По результатам этого и подобных экспериментов обнаружено, что... - From this and similar experiments it is found that...
    • Подобные результаты убедительно доказывают, что... - Such results conclusively prove that...
    • В некотором роде подобный результат выполняется для... - A somewhat similar result holds for...
    • Полученные результаты должны быть таковы, чтобы их можно было сравнить с... - The results obtained should be capable of comparison with...
    • Помимо прочего, данный результат показывает, что... - Among other things, this result shows that...
    • Помня об этом результате, давайте проверим... - With this result in mind, let us examine...
    • Поучительно рассмотреть эти результаты с точки зрения... - It is instructive to consider these results from the standpoint of...
    • Предыдущие результаты были получены в рамках предположения... - The above results have been obtained under the assumption of...
    • Предыдущие результаты еще раз иллюстрируют... - The above results once more illustrate...
    • Предыдущие результаты можно подытожить следующим образом. - The above results may be summarized as follows.
    • Приведенная выше теория не предсказывает хорошо известный результат, что... - The theory given above does not predict the well-known result that...
    • Простой иллюстрацией для этого результата является его приложение к... - A simple illustration of this result is its application to...
    • Результат может быть найден (с помощью и т. п.)... - The output can be found by...
    • Результат показан ниже. - The result is recorded below.
    • Результат, представленный формулой (9), очень полезен при выводе свойств (чего-л). - The result (9) is very useful for deducing properties of...
    • Результат, справедливость которого может быть проверена (самим) читателем, формулируется следующим образом. - The result, which may be verified by the reader, is...
    • Результатом является представление... - The result is a representation of...
    • Результаты были получены непосредственным наблюдением... - The results are obtained by direct observation of...
    • Результаты были разочаровывающими, в основном потому... - The results have been disappointing, mainly because...
    • Результаты всех этих методов согласуются с... - The results of all these methods are consistent with...
    • Результаты данной главы позволяют нам... - The results of the present chapter enable us to...
    • Результаты согласуются с пониманием, что... - The results are consistent with the view that...
    • Следующий очень важный результат является основой для... - The following very important result is the basis for...
    • Соответствующий результат справедлив (и) для... - A corresponding result holds for...
    • Справедливость того же результата можно увидеть геометрически. - The same result can be seen geometrically.
    • Сравнение с точным результатом (2) показывает, что... - A comparison with the exact result (2) shows that...
    • Считается хорошей практикой выражать все результаты измерений в метрической системе. - It is considered good practice to express all measurements in metric units.
    • Таким образом, данный результат доказан. - The result is therefore established.
    • Таким образом, мы можем обобщить результаты из первого параграфа и сообщить, что... - Thus, we can generalize the results of Section 1 and state that...
    • Таким образом, получен следующий основной (= центральный) результат... - The following key results are therefore obtained:...
    • Такого же самого типа рассуждения доказывают следующий результат. - Arguments of the same type prove the following result.
    • Такой результат более предпочтителен (другому результату). - The outcome is certainly preferable to...
    • Твердо установленным результатом является, что... - It is a well-established result that...
    • Тем не менее эта формальная работа привела к конкретному результату. - Nevertheless, this formal work has produced a concrete result.
    • Теперь мы доказываем два фундаментальных результата. - We now prove two fundamental results.
    • Теперь мы доказываем один фундаментальный результат. - We now prove a fundamental result.
    • Теперь мы можем сформулировать следующий результат. - We are now in a position to state the following result.
    • Теперь мы получаем желаемый результат. - We now have the desired result.
    • Теперь мы собрали воедино основные определения и результаты (исследования и т. п.)... - We have now assembled the main definitions and results of...
    • Тот же самый результат может быть получен простым (вычислением и т. п.)... - The same result may be obtained by simply...
    • Тот же самый результат может быть сформулирован в другой форме. - The same result can be put in a different form.
    • Тот же самый результат можно вывести из... - The same result may be deduced from...
    • Физический смысл этого результата состоит в том, что... - The physical significance of this result is that...
    • Формально этот результат выглядит весьма похожим на... - Formally, the result looks somewhat similar to...
    • Численные результаты, основанные на соотношении (4), показывают, что... - Numerical computations based on (4) show that...
    • Читатель мог бы сравнить этот результат с выражением (6). - The reader may compare this result with the expression (6).
    • Читатель найдет этот результат в любом учебнике... - The reader will find this result in any textbook on...
    • Чтобы объяснить получившийся результат, мы могли бы предположить, что... - То explain the above result, we could suppose that...
    • Чтобы получить необходимый результат, мы... - То obtain the required result, let...
    • Чтобы получить практический результат в подобных случаях, мы... - То obtain a practical result in such cases, we...
    • Эти два результата имеют существенный интерес. - These two results are of considerable interest.
    • Эти два результата совместно показывают, что... - These two results together show that...
    • Эти кажущиеся тривиальными результаты приводят к... - These seemingly trivial results lead to...
    • Эти результаты имели важные далеко ведущие последствия. - The results were of far reaching importance.
    • Эти результаты могут быть легко описаны в терминах... - These results can easily be described in terms of...
    • Эти результаты можно использовать, чтобы установить... - These results can be used to establish...
    • Эти результаты можно очевидным образом обобщить (на случай и т. п.)... - These results can be extended in an obvious way to...
    • Эти результаты не изменятся, если мы... - These results are not affected if we...
    • Эти результаты представлены на рис. 3 и 4. - The results are displayed in Figures 3 and 4.
    • Эти результаты согласуются с предположением, что... - These results are consistent with the assumption that...
    • Эти результаты также поддержали точку зрения, что... - The results also lend support to the view that...
    • Эти результаты теперь могут быть уточнены для случая... - These results can now be specialized to the case of...
    • Эти результаты часто бывают необходимы. - These results are needed frequently.
    • Эти результаты являются следствием... - These results are a consequence of...
    • Эти результаты ясно показывают, что... - These results clearly show that...
    • Эти результаты в основном согласуются с... - These results are broadly consistent with...
    • Это важный результат. Он утверждает, что... - This is an important result. It says that...
    • Это и есть тот самый предсказанный результат. - This is precisely the expected result.
    • Это интересный результат. - This is an interesting result.
    • Это интересный результат, так как... - This is an interesting result because...
    • Это контрастирует с соответствующим результатом для... - This contrasts with the corresponding result for...
    • Это очень важный результат. Он означает, что... - This is a very important result. It means that...
    • Это подтверждается приведенными результатами. - This is confirmed by the results shown.
    • Это результат важен для практики, так как... - The result is important in practical terms since...
    • Это согласуется с нашим предыдущим результатом. - This is in agreement with our previous result.
    • Это хорошо подтверждается результатами... - This is strongly supported by the results of...
    • Это устанавливает данный результат. - This establishes the result.
    •Это чрезвычайно важный результат, поскольку он позволяет нам... - This is an exceedingly important result, as it enables us to...
    • Это ясно показано на рис. 1, который представляет результаты (чего-л). - This is clearly demonstrated in Figure 1 which shows the results of...
    • Этот неверный результат получается вследствие... - This incorrect result is due to...
    • Этот результат более или менее ожидаем, если исходить из того факта, что... - This result is more or less to be expected from the fact that...
    • Этот результат был сформулирован довольно неопределенно (= неточно), потому что... - This result has been stated rather vaguely because...
    • Этот результат было необходимо ожидать, исходя из факта, что... - This result was to be expected from the fact that...
    • Этот результат вытекает из изучения... - This result follows from a study of...
    • Этот результат заслуживает более пристального рассмотрения. - This result is worth a more careful look.
    • Этот результат имеет поразительное сходство с... -. This result bears a striking resemblance to...
    • Этот результат легко установить. - It is easy to establish this result.
    • Этот результат легче запомнить... - This result is more easily remembered by...
    • Этот результат мог бы быть выведен прямо из соотношения (6). - This result could have been deduced directly from (6).
    • Этот результат мог бы нам позволить... - This result may allow us to...
    • Этот результат можно было бы получить более легко, увидев, что... - This result could have been obtained more easily by recognizing that...
    • Этот результат можно использовать без опасений, только если... - It is safe to use this result only if...
    • Этот результат можно сделать более наглядным с помощью... - The result can be made more explicit by...
    • Этот результат не зависит ни от каких предположений относительно... - This result is independent of any assumption about...
    • Этот результат не слишком изменяется, если... - The result is not essentially different if...
    • Этот результат не является простым, потому что... - The result is not simple because...
    • Этот результат перестает быть верным, если... - This result no longer holds if...
    • Этот результат подтверждает интуитивное понимание того, что... - This result confirms the intuitive view that...
    • Этот результат полезен лишь тогда, когда... - This result is useful only when...
    • Этот результат поражает тем, что... - The striking thing about this result is that...
    • Этот результат предлагает естественное обобщение... - This result suggests a natural generalization of...
    • Этот результат совпадает с полученным с помощью уравнения (4). - The result is exactly the same as that given by equation (4).
    • Этот результат согласуется с тем фактом, что... - This result is in agreement with the fact that...
    • Этот результат также можно было бы получить, применяя... - This result may also be obtained by means of...
    • Этот результат является более или менее ожидаемым, однако исходя из того, что... - This result is more or less to be expected, however, from the fact that...

    Русско-английский словарь научного общения > результат

  • 15 Clerke, Sir Clement

    SUBJECT AREA: Metallurgy
    [br]
    d. 1693
    [br]
    English entrepreneur responsible, with others, for attempts to introduce coal-fired smelting of lead and, later, of copper.
    [br]
    Clerke, from Launde Abbey in Leicestershire, was involved in early experiments to smelt lead using coal fuel, which was believed to have been located on the Leicestershire-Derbyshire border. Concurrently, Lord Grandison was financing experiments at Bristol for similar purposes, causing the downfall of an earlier unsuccessful patented method before securing his own patent in 1678. In that same year Clerke took over management of the Bristol works, claiming the ability to secure financial return from Grandison's methods. Financial success proved elusive, although the technical problems of adapting the reverberatory furnace to coal fuel appear to have been solved when Clerke was found to have established another lead works nearby on his own account. He was forced to cease work on lead in 1684 in respect of Grandison's patent rights. Clerke then turned to investigations into the coal-fired smelting of other metals and started to smelt copper in coal-fired reverberatory furnaces. By 1688–9 small supplied of merchantable copper were offered for sale in London in order to pay his workers, possibly because of further financial troubles. The practical success of his smelting innovation is widely acknowledged to have been the responsibility of John Coster and, to a smaller extent, Gabriel Wayne, both of whom left Clerke and set up separate works elsewhere. Clerke's son Talbot took over administration of his father's works, which declined still further and closed c. 1693, at about the time of Sir Clement's death. Both Coster and Wayne continued to develop smelting techniques, establishing a new British industry in the smelting of copper with coal.
    [br]
    Principal Honours and Distinctions
    Created baronet 1661.
    Further Reading
    Rhys Jenkins, 1934, "The reverberatory furnace with coal fuel", Transactions of the Newcomen Society 34:67–81.
    —1943–4, "Copper smelting in England: Revival at the end of the seventeenth century", Transactions of the Newcomen Society 24:78–80.
    J.Morton, 1985, The Rise of the Modern Copper and Brass Industry: 1690 to 1750, unpublished PhD thesis, University of Birmingham, 87–106.
    JD

    Biographical history of technology > Clerke, Sir Clement

  • 16 Davenport, Thomas

    SUBJECT AREA: Electricity
    [br]
    b. 9 July 1802 Williamstown, Vermont, USA
    d. 6 July 1851 Salisbury, Vermont, USA
    [br]
    American craftsman and inventor who constructed the first rotating electrical machines in the United States.
    [br]
    When he was 14 years old Davenport was apprenticed to a blacksmith for seven years. At the close of his apprenticeship in 1823 he opened a blacksmith's shop in Brandon, Vermont. He began experimenting with electromagnets after observing one in use at the Penfield Iron Works at Crown Point, New York, in 1831. He saw the device as a possible source of power and by July 1834 had constructed his first electric motor. Having totally abandoned his regular business, Davenport built and exhibited a number of miniature machines; he utilized an electric motor to propel a model car around a circular track in 1836, and this became the first recorded instance of an electric railway. An application for a patent and a model were destroyed in a fire at the United States Patent Office in December 1836, but a second application was made and Davenport received a patent the following year for Improvements in Propelling Machinery by Magnetism and Electromagnetism. A British patent was also obtained. A workshop and laboratory were established in New York, but Davenport had little financial backing for his experiments. He built a total of over one hundred motors but was defeated by the inability to obtain an inexpensive source of power. Using an electric motor of his own design to operate a printing press in 1840, he undertook the publication of a journal, The Electromagnet and Mechanics' Intelligencer. This was the first American periodical on electricity, but it was discontinued after a few issues. In failing health he retired to Vermont where in the last year of his life he continued experiments in electromagnetism.
    [br]
    Bibliography
    1837, US patent no. 132, "Improvements in Propelling Machinery by Magnetism and Electromagnetism".
    6 June 1837 British patent no. 7,386.
    Further Reading
    F.L.Pope, 1891, "Inventors of the electric motor with special reference to the work of Thomas Davenport", Electrical Engineer, 11:1–5, 33–9, 65–71, 93–8, 125–30 (the most comprehensive account).
    Annals of Electricity (1838) 2:257–64 (provides a description of Davenport's motor).
    W.J.King, 1962, The Development of Electrical Technology in the 19th Century, Washington, DC: Smithsonian Institution, Paper 28, pp. 263–4 (a short account).
    GW

    Biographical history of technology > Davenport, Thomas

  • 17 Miller, Patrick

    SUBJECT AREA: Ports and shipping
    [br]
    b. 1731 Glasgow, Scotland
    d. 9 December 1815 Dalswinton, Dumfriesshire, Scotland
    [br]
    Scottish merchant and banker, early experimenter in powered navigation and in ship form.
    [br]
    In his own words, Patrick Miller was "without a sixpence" in his early youth; this is difficult to prove one way or another as he ended his life as Director and Deputy Governor of the Bank of Scotland. One thing is clear however, that from his earliest days, in common with most of his counterparts of the late eighteenth century, he was interested in experimental and applied science. Having acquired a substantial income from other sources, Miller was able to indulge his interest in ships and engineering. His first important vessel was the trimaran Edinburgh, designed by him and launched at Leith in 1786. Propulsion was man-powered using paddle wheels positioned in the spaces between the outer and central hulls. This led to several trials of similar craft on the Forth in the 1780s, and ultimately to the celebrated Dalswinton Loch trials. In 1785 Miller had purchased the Dumfriesshire estate of Dalswinton and commenced a series of experiments on agricultural development and other matters. With the help of William Symington he built a double-hull steamship with internal paddle wheels which was tested on the Loch in 1788. The 7.6 m (25 ft) long ship travelled at 5 mph (8 km/h) on her trials, and according to unsubstantiated tradition carried a group of well-known people including the poet Robert Burns (1759–1796).
    Miller carried out many more important experiments and in 1796 obtained a patent for the design of shallow-drafted ships able to carry substantial cargo on flat bottoms. His main achievement may have been to stimulate William Symington, who at the beginning of the nineteenth century went on to design and build two of the world's first important steamships, each named Charlotte Dundas, for service on the Forth and Clyde Canal.
    [br]
    Further Reading
    H.Philip Spratt, 1958, The Birth of the Steamboat, London: Griffiths. W.S.Harvey and G.Downs-Rose, 1980, William Symington, Inventor and Engine
    Builder, London: Northgate.
    F.M.Walker, 1984, Song of the Clyde. A History of Clyde Shipbuilding, Cambridge: PSL.
    FMW

    Biographical history of technology > Miller, Patrick

  • 18 Niepce de St Victor, Claude Félix Abel

    [br]
    b. 1805 Saint-Cyr, France
    d. 1870 France
    [br]
    French soldier and photographic scientist, inventor of the first practicable glass negative process.
    [br]
    A cousin of the photographic pioneer J.N. Niepce, he attended the military school of Saumur, graduating in 1827. Niepce de St Victor had wide scientific interests, but came to photography indirectly from experiments he made on fading dyes in military uniforms. He was transferred to the Paris Municipal Guard in 1845 and was able to set up a chemical laboratory to conduct research. From photographic experiments performed in his spare time, Niepce de St Victor devised the first practicable photographic process on glass in 1847. Using albumen derived from the white of eggs as a carrier for silver iodide, he prepared finely detailed negatives which produced positive prints far sharper than those made with the paper negatives of Talbot's calotype process. Exposure times were rather long, however, and the albumen-negative process was soon displaced by the wet-collodion process introduced in 1851, although albumen positives on glass continued to be used for high-quality stereoscopic views and lantern slides. In 1851 Niepce de St Victor described a photographic colour process, and between 1853 and 1855 he developed his famous cousin's bitumen process into a practicable means of producing photographically derived printing plates. He then went on to investigate the use of uranium salts in photography. He presented twenty-six papers to the Académie des Sciences between 1847 and 1862.
    [br]
    Bibliography
    1847, Comptes Rendus 25(25 October):586 (describes his albumen-on-glass process).
    Further Reading
    J.M.Eder, 1945, History of Photography, trans. E.Epstean, New York (provides details of his contributions to photography).
    JW

    Biographical history of technology > Niepce de St Victor, Claude Félix Abel

  • 19 Seguin, Marc

    [br]
    b. 20 April 1786 Annonay, Ardèche, France
    d. 24 February 1875 Annonay, Ardèche, France
    [br]
    French engineer, inventor of multi-tubular firetube boiler.
    [br]
    Seguin trained under Joseph Montgolfier, one of the inventors of the hot-air balloon, and became a pioneer of suspension bridges. In 1825 he was involved in an attempt to introduce steam navigation to the River Rhône using a tug fitted with a winding drum to wind itself upstream along a cable attached to a point on the bank, with a separate boat to transfer the cable from point to point. The attempt proved unsuccessful and was short-lived, but in 1825 Seguin had decided also to seek a government concession for a railway from Saint-Etienne to Lyons as a feeder of traffic to the river. He inspected the Stockton \& Darlington Railway and met George Stephenson; the concession was granted in 1826 to Seguin Frères \& Ed. Biot and two steam locomotives were built to their order by Robert Stephenson \& Co. The locomotives were shipped to France in the spring of 1828 for evaluation prior to construction of others there; each had two vertical cylinders, one each side between front and rear wheels, and a boiler with a single large-diameter furnace tube, with a watertube grate. Meanwhile, in 1827 Seguin, who was still attempting to produce a steamboat powerful enough to navigate the fast-flowing Rhône, had conceived the idea of increasing the heating surface of a boiler by causing the hot gases from combustion to pass through a series of tubes immersed in the water. He was soon considering application of this type of boiler to a locomotive. He applied for a patent for a multi-tubular boiler on 12 December 1827 and carried out numerous experiments with various means of producing a forced draught to overcome the perceived obstruction caused by the small tubes. By May 1829 the steam-navigation venture had collapsed, but Seguin had a locomotive under construction in the workshops of the Lyons-Sain t- Etienne Railway: he retained the cylinder layout of its Stephenson locomotives, but incorporated a boiler of his own design. The fire was beneath the barrel, surrounded by a water-jacket: a single large flue ran towards the front of the boiler, whence hot gases returned via many small tubes through the boiler barrel to a chimney above the firedoor. Draught was provided by axle-driven fans on the tender.
    Seguin was not aware of the contemporary construction of Rocket, with a multi-tubular boiler, by Robert Stephenson; Rocket had its first trial run on 5 September 1829, but the precise date on which Seguin's locomotive first ran appears to be unknown, although by 20 October many experiments had been carried out upon it. Seguin's concept of a multi-tubular locomotive boiler therefore considerably antedated that of Henry Booth, and his first locomotive was completed about the same date as Rocket. It was from Rocket's boiler, however, rather than from that of Seguin's locomotive, that the conventional locomotive boiler was descended.
    [br]
    Bibliography
    February 1828, French patent no. 3,744 (multi-tubular boiler).
    1839, De l'Influence des chemins de fer et de l'art de les tracer et de les construire, Paris.
    Further Reading
    F.Achard and L.Seguin, 1928, "Marc Seguin and the invention of the tubular boiler", Transactions of the Newcomen Society 7 (traces the chronology of Seguin's boilers).
    ——1928, "British railways of 1825 as seen by Marc Seguin", Transactions of the Newcomen Society 7.
    J.B.Snell, 1964, Early Railways, London: Weidenfeld \& Nicolson.
    J.-M.Combe and B.Escudié, 1991, Vapeurs sur le Rhône, Lyons: Presses Universitaires de Lyon.
    PJGR

    Biographical history of technology > Seguin, Marc

  • 20 Braun, Karl Ferdinand

    [br]
    b. 6 June 1850 Fulda, Hesse, Germany
    d. 20 April 1918 New York City, New York, USA
    [br]
    German physicist who shared with Marconi the 1909 Nobel Prize for Physics for developments in wireless telegraphy; inventor of the cathode ray oscilloscope.
    [br]
    After obtaining degrees from the universities of Marburg and Berlin (PhD) and spending a short time as Headmaster of the Thomas School in Berlin, Braun successively held professorships in theoretical physics at the universities of Marburg (1876), Strasbourg (1880) and Karlsruhe (1883) before becoming Professor of Experimental Physics at Tübingen in 1885 and Director and Professor of Physics at Strasbourg in 1895.
    During this time he devised experimental apparatus to determine the dielectric constant of rock salt and developed the Braun high-tension electrometer. He also discovered that certain mineral sulphide crystals would only conduct electricity in one direction, a rectification effect that made it possible to detect and demodulate radio signals in a more reliable manner than was possible with the coherer. Primarily, however, he was concerned with improving Marconi's radio transmitter to increase its broadcasting range. By using a transmitter circuit comprising a capacitor and a spark-gap, coupled to an aerial without a spark-gap, he was able to obtain much greater oscillatory currents in the latter, and by tuning the transmitter so that the oscillations occupied only a narrow frequency band he reduced the interference with other transmitters. Other achievements include the development of a directional aerial and the first practical wavemeter, and the measurement in Strasbourg of the strength of radio waves received from the Eiffel Tower transmitter in Paris. For all this work he subsequently shared with Marconi the 1909 Nobel Prize for Physics.
    Around 1895 he carried out experiments using a torsion balance in order to measure the universal gravitational constant, g, but the work for which he is probably best known is the addition of deflecting plates and a fluorescent screen to the Crooke's tube in 1897 in order to study the characteristics of high-frequency currents. The oscilloscope, as it was called, was not only the basis of a now widely used and highly versatile test instrument but was the forerunner of the cathode ray tube, or CRT, used for the display of radar and television images.
    At the beginning of the First World War, while in New York to testify in a patent suit, he was trapped by the entry of the USA into the war and remained in Brooklyn with his son until his death.
    [br]
    Principal Honours and Distinctions
    Nobel Prize for Physics (jointly with Marconi) 1909.
    Bibliography
    1874, "Assymetrical conduction of certain metal sulphides", Pogg. Annal. 153:556 (provides an account of the discovery of the crystal rectifier).
    1897, "On a method for the demonstration and study of currents varying with time", Wiedemann's Annalen 60:552 (his description of the cathode ray oscilloscope as a measuring tool).
    Further Reading
    K.Schlesinger \& E.G.Ramberg, 1962, "Beamdeflection and photo-devices", Proceedings of the Institute of Radio Engineers 50, 991.
    KF

    Biographical history of technology > Braun, Karl Ferdinand

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