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philosophy+of+natural+science

  • 21 physiologia

        physiologia ae, f, φυσιολογία, knowledge of nature, natural philosophy.
    * * *
    natural science; physiology (Cal)

    Latin-English dictionary > physiologia

  • 22 physica

    1.
    physĭca, ae, and physĭcē, ēs, f., = phusikê, natural science, nutural philosophy, physics, Cic. Ac. 1, 7, 25; id. Fin. 3, 21, 72; 3, 22, 73.
    2.
    physĭca, ōrum, v. physicus, II. B.

    Lewis & Short latin dictionary > physica

  • 23 inclinación

    f.
    1 inclination, fancy, bent, bias.
    2 slope, gradient, inclination, incline.
    3 bowing, reverence, curtsy, bow.
    4 slanting position, cant, tilt, tilted position.
    5 leaning, lean.
    6 vergence.
    7 addiction.
    * * *
    2 (tendencia) leaning
    3 (afición, cariño) penchant
    \
    sentir inclinación por... to have a penchant for...
    * * *
    noun f.
    * * *
    SF
    1) [de terreno] slope, gradient; [de objeto] lean, list

    la inclinación del terreno — the slope of the ground, the gradient (of the ground)

    inclinación lateral — (Aer) bank

    inclinación magnética — magnetic dip, magnetic inclination

    2) (=reverencia) bow
    3) (=tendencia) inclination

    su inclinación natural es conservadora — his natural inclination is conservative, he's conservative by inclination

    tiene inclinaciones artísticas — she has artistic inclinations, she's artistically inclined

    tener inclinación hacia la poesía — to have a penchant for poetry, have poetic leanings

    * * *
    1)
    a) ( pendiente) slope
    b) ( ángulo) inclination

    la inclinación de una torre — the lean o inclination of a tower

    3) (interés, tendencia)

    tener inclinación por or hacia la música — to have a musical bent o musical inclinations

    inclinaciones políticas/sexuales — political/sexual leanings

    * * *
    = bent, penchant, leaning, inclination, slope, pitch, tilt, bent of mind.
    Ex. This factor was a constant theme especially in those programmes with a highly technical bent.
    Ex. Our penchant to organize is perhaps as close to a biological imperative as any form of human behavior is likely to come.
    Ex. Finally, this new philosophy did not conflict with the librarian's elitist leanings.
    Ex. These are less tangible, more dependent upon personal motivation and inclination, and not amenable to enforcement through institutional policies.
    Ex. The heading PITCH (Slope) illustrates how to qualify a word by another in parenthesis to clarify the meaning = El encabezamiento PENDIENTE (inclinación) ilustra cómo modificar una palabra con otra entre paréntesis para aclarar el significado.
    Ex. This method results in saving maximum space in the stacks as the pitch of the shelves can be adjusted accordingly.
    Ex. This has contributed to a tilt toward English-language publications in Web of Science.
    Ex. Only when students have a scientific bent of mind, will a community and a country grow.
    ----
    * con una inclinación hacia las tecnología digital = digitally-oriented.
    * inclinación sexual = sexual orientation.
    * sentir la inclinación de = be inclined to.
    * * *
    1)
    a) ( pendiente) slope
    b) ( ángulo) inclination

    la inclinación de una torre — the lean o inclination of a tower

    3) (interés, tendencia)

    tener inclinación por or hacia la música — to have a musical bent o musical inclinations

    inclinaciones políticas/sexuales — political/sexual leanings

    * * *
    = bent, penchant, leaning, inclination, slope, pitch, tilt, bent of mind.

    Ex: This factor was a constant theme especially in those programmes with a highly technical bent.

    Ex: Our penchant to organize is perhaps as close to a biological imperative as any form of human behavior is likely to come.
    Ex: Finally, this new philosophy did not conflict with the librarian's elitist leanings.
    Ex: These are less tangible, more dependent upon personal motivation and inclination, and not amenable to enforcement through institutional policies.
    Ex: The heading PITCH (Slope) illustrates how to qualify a word by another in parenthesis to clarify the meaning = El encabezamiento PENDIENTE (inclinación) ilustra cómo modificar una palabra con otra entre paréntesis para aclarar el significado.
    Ex: This method results in saving maximum space in the stacks as the pitch of the shelves can be adjusted accordingly.
    Ex: This has contributed to a tilt toward English-language publications in Web of Science.
    Ex: Only when students have a scientific bent of mind, will a community and a country grow.
    * con una inclinación hacia las tecnología digital = digitally-oriented.
    * inclinación sexual = sexual orientation.
    * sentir la inclinación de = be inclined to.

    * * *
    A
    1 (pendiente) slope
    la inclinación del terreno the slope of the land
    2 (ángulo) inclination
    la inclinación de una torre the lean o inclination of a tower
    a una inclinación de 60 grados at an inclination of 60 degrees
    Compuesto:
    magnetic dip o inclination
    me saludó con una leve inclinación he acknowledged me with a slight bow
    asintió con una inclinación de la cabeza he nodded (his head) in agreement
    C
    1 (interés, tendencia) inclinación POR or HACIA algo:
    siempre tuvo inclinación por or hacia la música he always had a musical bent o musical inclinations
    sus inclinaciones políticas his political leanings o tendencies
    inclinaciones sexuales sexual leanings
    tiene una cierta inclinación a decir mentiras he has a tendency to o he tends to tell lies
    inclinaciones suicidas suicidal tendencies
    2 (predilección) inclinación POR algn:
    tiene una inclinación especial por la pequeña she's especially fond of the youngest one
    * * *

    inclinación sustantivo femenino
    1


    2 ( movimiento del cuerpo) bow;

    3 (interés, tendencia): tener inclinación por or hacia la música to have a musical bent o musical inclinations;
    ◊ inclinaciones políticas/sexuales political/sexual leanings

    inclinación sustantivo femenino
    1 (del terreno, de un edificio) slope, incline: el mueble no cabe debido a la inclinación del techo, the piece of furniture won't fit because the ceiling is sloping
    (del cuerpo) stoop
    2 (reverencia) bow
    3 (cariño, afición) inclination [por, for]: tiene inclinación por la hija pequeña, his youngest daughter is his favourite
    (predisposición) tendency, inclination [a, to]
    ' inclinación' also found in these entries:
    Spanish:
    abatimiento
    - debilidad
    - escora
    - gusto
    - inquietud
    - natural
    - vertiente
    - afición
    - desnivel
    - disposición
    - locura
    - por
    - predisposición
    - venia
    - veta
    English:
    bent
    - inclination
    - leaning
    - pitch
    - proclivity
    - proneness
    - slant
    - tilt
    - bob
    - penchant
    * * *
    1. [de terreno, tejado] slope;
    una inclinación del 15 por ciento [en carretera] a gradient of 15 percent;
    preocupa la inclinación del edificio the angle at which the building is leaning is cause for concern
    Fís inclinación magnética magnetic inclination o dip
    2. [afición] penchant o propensity (a o por for);
    preocupa la inclinación a la violencia de los seguidores del equipo the team's fans' penchant for violence is worrying;
    tiene una inclinación natural por la música she has a natural bent for music;
    inclinación sexual sexual orientation
    3. [cariño]
    inclinación hacia o [m5] por alguien fondness towards sb
    4. [saludo] bow;
    hizo una inclinación cuando pasaba el obispo he bowed as the bishop went past;
    * * *
    f
    1 inclination;
    tener inclinación a hacer algo have an inclination to do sth
    2 fig: propensión tendency
    3 de un terreno slope
    4 muestra de respeto bow
    * * *
    1) propensión: inclination, tendency
    2) : incline, slope
    * * *
    1. (cuesta) slope
    2. (tendencia) inclination

    Spanish-English dictionary > inclinación

  • 24 Henry, Joseph

    [br]
    b. 17 December 1797 Albany, New York, USA
    d. 13 May 1878 Washington, DC, USA
    [br]
    American scientist after whom the unit of inductance is named.
    [br]
    Sent to stay with relatives at the age of 6 because of the illness of his father, when the latter died in 1811 Henry was apprenticed to a silversmith and then turned to the stage. Whilst he was ill himself, a book on science fired his interest and he began studying at Albany Academy, working as a tutor to finance his studies. Initially intending to pursue medicine, he then spent some time as a surveyor before becoming Professor of Mathematics and Natural Philosophy at Albany Academy in 1826. There he became interested in the improvement of electromagnets and discovered that the use of an increased number of turns of wire round the core greatly increased their power; by 1831 he was able to supply to Yale a magnet capable of lifting almost a ton weight. During this time he also discovered the principles of magnetic induction and self-inductance. In the same year he made, but did not patent, a cable telegraph system capable of working over a distance of 1 mile (1.6 km). It was at this time, too, that he found that adiabatic expansion of gases led to their sudden cooling, thus paving the way for the development of refrigerators. For this he was recommended for, but never received, the Copley Medal of the Royal Society. Five years later he became Professor of Natural Philosophy at New Jersey College (later Princeton University), where he deduced the laws governing the operation of transformers and observed that changes in magnetic flux induced electric currents in conductors. Later he also observed that spark discharges caused electrical effects at a distance. He therefore came close to the discovery of radio waves. In 1836 he was granted a year's leave of absence and travelled to Europe, where he was able to meet Michael Faraday. It was with his help that in 1844 Samuel Morse set up the first patented electric telegraph, but, sadly, the latter seems to have reaped all the credit and financial rewards. In 1846 he became the first secretary of the Washington Smithsonian Institute and did much to develop government support for scientific research. As a result of his efforts some 500 telegraph stations across the country were equipped with meteorological equipment to supply weather information by telegraph to a central location, a facility that eventually became the US National Weather Bureau. From 1852 he was a member of the Lighthouse Board, contributing to improvements in lighting and sound warning systems and becoming its chairman in 1871. During the Civil War he was a technical advisor to President Lincoln. He was a founder of the National Academy of Science and served as its President for eleven years.
    [br]
    Principal Honours and Distinctions
    President, American Association for the Advancement of Science 1849. President, National Academy of Science 1893–1904. In 1893, to honour his work on induction, the International Congress of Electricians adopted the henry as the unit of inductance.
    Bibliography
    1824. "On the chemical and mechanical effects of steam". 1825. "The production of cold by the rarefaction of air".
    1832, "On the production of currents \& sparks of electricity \& magnetism", American
    Journal of Science 22:403.
    "Theory of the so-called imponderables", Proceedings of the American Association for the Advancement of Science 6:84.
    Further Reading
    Smithsonian Institution, 1886, Joseph Henry, Scientific Writings, Washington DC.
    KF

    Biographical history of technology > Henry, Joseph

  • 25 естественные науки

    1. sciences

    учёный; человек науки — man of science

    2. natural sciences
    3. philosophy
    4. science

    «Христианская наука» — Christian Science

    Русско-английский большой базовый словарь > естественные науки

  • 26 Knowledge

       It is indeed an opinion strangely prevailing amongst men, that houses, mountains, rivers, and, in a word, all sensible objects, have an existence, natural or real, distinct from their being perceived by the understanding. But, with how great an assurance and acquiescence soever this principle may be entertained in the world, yet whoever shall find in his heart to call it into question may, if I mistake not, perceive it to involve a manifest contradiction. For, what are the forementioned objects but things we perceive by sense? and what do we perceive besides our own ideas or sensations? and is it not plainly repugnant that any one of these, or any combination of them, should exist unperceived? (Berkeley, 1996, Pt. I, No. 4, p. 25)
       It seems to me that the only objects of the abstract sciences or of demonstration are quantity and number, and that all attempts to extend this more perfect species of knowledge beyond these bounds are mere sophistry and illusion. As the component parts of quantity and number are entirely similar, their relations become intricate and involved; and nothing can be more curious, as well as useful, than to trace, by a variety of mediums, their equality or inequality, through their different appearances.
       But as all other ideas are clearly distinct and different from each other, we can never advance farther, by our utmost scrutiny, than to observe this diversity, and, by an obvious reflection, pronounce one thing not to be another. Or if there be any difficulty in these decisions, it proceeds entirely from the undeterminate meaning of words, which is corrected by juster definitions. That the square of the hypotenuse is equal to the squares of the other two sides cannot be known, let the terms be ever so exactly defined, without a train of reasoning and enquiry. But to convince us of this proposition, that where there is no property, there can be no injustice, it is only necessary to define the terms, and explain injustice to be a violation of property. This proposition is, indeed, nothing but a more imperfect definition. It is the same case with all those pretended syllogistical reasonings, which may be found in every other branch of learning, except the sciences of quantity and number; and these may safely, I think, be pronounced the only proper objects of knowledge and demonstration. (Hume, 1975, Sec. 12, Pt. 3, pp. 163-165)
       Our knowledge springs from two fundamental sources of the mind; the first is the capacity of receiving representations (the ability to receive impressions), the second is the power to know an object through these representations (spontaneity in the production of concepts).
       Through the first, an object is given to us; through the second, the object is thought in relation to that representation.... Intuition and concepts constitute, therefore, the elements of all our knowledge, so that neither concepts without intuition in some way corresponding to them, nor intuition without concepts, can yield knowledge. Both may be either pure or empirical.... Pure intuitions or pure concepts are possible only a priori; empirical intuitions and empirical concepts only a posteriori. If the receptivity of our mind, its power of receiving representations in so far as it is in any way affected, is to be called "sensibility," then the mind's power of producing representations from itself, the spontaneity of knowledge, should be called "understanding." Our nature is so constituted that our intuitions can never be other than sensible; that is, it contains only the mode in which we are affected by objects. The faculty, on the other hand, which enables us to think the object of sensible intuition is the understanding.... Without sensibility, no object would be given to us; without understanding, no object would be thought. Thoughts without content are empty; intuitions without concepts are blind. It is therefore just as necessary to make our concepts sensible, that is, to add the object to them in intuition, as to make our intuitions intelligible, that is to bring them under concepts. These two powers or capacities cannot exchange their functions. The understanding can intuit nothing, the senses can think nothing. Only through their union can knowledge arise. (Kant, 1933, Sec. 1, Pt. 2, B74-75 [p. 92])
       Metaphysics, as a natural disposition of Reason is real, but it is also, in itself, dialectical and deceptive.... Hence to attempt to draw our principles from it, and in their employment to follow this natural but none the less fallacious illusion can never produce science, but only an empty dialectical art, in which one school may indeed outdo the other, but none can ever attain a justifiable and lasting success. In order that, as a science, it may lay claim not merely to deceptive persuasion, but to insight and conviction, a Critique of Reason must exhibit in a complete system the whole stock of conceptions a priori, arranged according to their different sources-the Sensibility, the understanding, and the Reason; it must present a complete table of these conceptions, together with their analysis and all that can be deduced from them, but more especially the possibility of synthetic knowledge a priori by means of their deduction, the principles of its use, and finally, its boundaries....
       This much is certain: he who has once tried criticism will be sickened for ever of all the dogmatic trash he was compelled to content himself with before, because his Reason, requiring something, could find nothing better for its occupation. Criticism stands to the ordinary school metaphysics exactly in the same relation as chemistry to alchemy, or as astron omy to fortune-telling astrology. I guarantee that no one who has comprehended and thought out the conclusions of criticism, even in these Prolegomena, will ever return to the old sophistical pseudo-science. He will rather look forward with a kind of pleasure to a metaphysics, certainly now within his power, which requires no more preparatory discoveries, and which alone can procure for reason permanent satisfaction. (Kant, 1891, pp. 115-116)
       Knowledge is only real and can only be set forth fully in the form of science, in the form of system. Further, a so-called fundamental proposition or first principle of philosophy, even if it is true, it is yet none the less false, just because and in so far as it is merely a fundamental proposition, merely a first principle. It is for that reason easily refuted. The refutation consists in bringing out its defective character; and it is defective because it is merely the universal, merely a principle, the beginning. If the refutation is complete and thorough, it is derived and developed from the nature of the principle itself, and not accomplished by bringing in from elsewhere other counter-assurances and chance fancies. It would be strictly the development of the principle, and thus the completion of its deficiency, were it not that it misunderstands its own purport by taking account solely of the negative aspect of what it seeks to do, and is not conscious of the positive character of its process and result. The really positive working out of the beginning is at the same time just as much the very reverse: it is a negative attitude towards the principle we start from. Negative, that is to say, in its one-sided form, which consists in being primarily immediate, a mere purpose. It may therefore be regarded as a refutation of what constitutes the basis of the system; but more correctly it should be looked at as a demonstration that the basis or principle of the system is in point of fact merely its beginning. (Hegel, 1910, pp. 21-22)
       Knowledge, action, and evaluation are essentially connected. The primary and pervasive significance of knowledge lies in its guidance of action: knowing is for the sake of doing. And action, obviously, is rooted in evaluation. For a being which did not assign comparative values, deliberate action would be pointless; and for one which did not know, it would be impossible. Conversely, only an active being could have knowledge, and only such a being could assign values to anything beyond his own feelings. A creature which did not enter into the process of reality to alter in some part the future content of it, could apprehend a world only in the sense of intuitive or esthetic contemplation; and such contemplation would not possess the significance of knowledge but only that of enjoying and suffering. (Lewis, 1946, p. 1)
       "Evolutionary epistemology" is a branch of scholarship that applies the evolutionary perspective to an understanding of how knowledge develops. Knowledge always involves getting information. The most primitive way of acquiring it is through the sense of touch: amoebas and other simple organisms know what happens around them only if they can feel it with their "skins." The knowledge such an organism can have is strictly about what is in its immediate vicinity. After a huge jump in evolution, organisms learned to find out what was going on at a distance from them, without having to actually feel the environment. This jump involved the development of sense organs for processing information that was farther away. For a long time, the most important sources of knowledge were the nose, the eyes, and the ears. The next big advance occurred when organisms developed memory. Now information no longer needed to be present at all, and the animal could recall events and outcomes that happened in the past. Each one of these steps in the evolution of knowledge added important survival advantages to the species that was equipped to use it.
       Then, with the appearance in evolution of humans, an entirely new way of acquiring information developed. Up to this point, the processing of information was entirely intrasomatic.... But when speech appeared (and even more powerfully with the invention of writing), information processing became extrasomatic. After that point knowledge did not have to be stored in the genes, or in the memory traces of the brain; it could be passed on from one person to another through words, or it could be written down and stored on a permanent substance like stone, paper, or silicon chips-in any case, outside the fragile and impermanent nervous system. (Csikszentmihalyi, 1993, pp. 56-57)

    Historical dictionary of quotations in cognitive science > Knowledge

  • 27 Logic

       My initial step... was to attempt to reduce the concept of ordering in a sequence to that of logical consequence, so as to proceed from there to the concept of number. To prevent anything intuitive from penetrating here unnoticed, I had to bend every effort to keep the chain of inference free of gaps. In attempting to comply with this requirement in the strictest possible way, I found the inadequacy of language to be an obstacle. (Frege, 1972, p. 104)
       I believe I can make the relation of my 'conceptual notation' to ordinary language clearest if I compare it to the relation of the microscope to the eye. The latter, because of the range of its applicability and because of the ease with which it can adapt itself to the most varied circumstances, has a great superiority over the microscope. Of course, viewed as an optical instrument it reveals many imperfections, which usually remain unnoticed only because of its intimate connection with mental life. But as soon as scientific purposes place strong requirements upon sharpness of resolution, the eye proves to be inadequate.... Similarly, this 'conceptual notation' is devised for particular scientific purposes; and therefore one may not condemn it because it is useless for other purposes. (Frege, 1972, pp. 104-105)
       To sum up briefly, it is the business of the logician to conduct an unceasing struggle against psychology and those parts of language and grammar which fail to give untrammeled expression to what is logical. He does not have to answer the question: How does thinking normally take place in human beings? What course does it naturally follow in the human mind? What is natural to one person may well be unnatural to another. (Frege, 1979, pp. 6-7)
       We are very dependent on external aids in our thinking, and there is no doubt that the language of everyday life-so far, at least, as a certain area of discourse is concerned-had first to be replaced by a more sophisticated instrument, before certain distinctions could be noticed. But so far the academic world has, for the most part, disdained to master this instrument. (Frege, 1979, pp. 6-7)
       There is no reproach the logician need fear less than the reproach that his way of formulating things is unnatural.... If we were to heed those who object that logic is unnatural, we would run the risk of becoming embroiled in interminable disputes about what is natural, disputes which are quite incapable of being resolved within the province of logic. (Frege, 1979, p. 128)
       [L]inguists will be forced, internally as it were, to come to grips with the results of modern logic. Indeed, this is apparently already happening to some extent. By "logic" is not meant here recursive function-theory, California model-theory, constructive proof-theory, or even axiomatic settheory. Such areas may or may not be useful for linguistics. Rather under "logic" are included our good old friends, the homely locutions "and," "or," "if-then," "if and only if," "not," "for all x," "for some x," and "is identical with," plus the calculus of individuals, event-logic, syntax, denotational semantics, and... various parts of pragmatics.... It is to these that the linguist can most profitably turn for help. These are his tools. And they are "clean tools," to borrow a phrase of the late J. L. Austin in another context, in fact, the only really clean ones we have, so that we might as well use them as much as we can. But they constitute only what may be called "baby logic." Baby logic is to the linguist what "baby mathematics" (in the phrase of Murray Gell-Mann) is to the theoretical physicist-very elementary but indispensable domains of theory in both cases. (Martin, 1969, pp. 261-262)
       There appears to be no branch of deductive inference that requires us to assume the existence of a mental logic in order to do justice to the psychological phenomena. To be logical, an individual requires, not formal rules of inference, but a tacit knowledge of the fundamental semantic principle governing any inference; a deduction is valid provided that there is no way of interpreting the premises correctly that is inconsistent with the conclusion. Logic provides a systematic method for searching for such counter-examples. The empirical evidence suggests that ordinary individuals possess no such methods. (Johnson-Laird, quoted in Mehler, Walker & Garrett, 1982, p. 130)
       The fundamental paradox of logic [that "there is no class (as a totality) of those classes which, each taken as a totality, do not belong to themselves" (Russell to Frege, 16 June 1902, in van Heijenoort, 1967, p. 125)] is with us still, bequeathed by Russell-by way of philosophy, mathematics, and even computer science-to the whole of twentieth-century thought. Twentieth-century philosophy would begin not with a foundation for logic, as Russell had hoped in 1900, but with the discovery in 1901 that no such foundation can be laid. (Everdell, 1997, p. 184)

    Historical dictionary of quotations in cognitive science > Logic

  • 28 физика

    Универсальный русско-английский словарь > физика

  • 29 aerodynamics

    n аэродинамика
    Синонимический ряд:
    science (noun) applied mathematics; astrophysics; mechanics; natural philosophy; nuclear physics; physics; science; science of matter and motion; thermodynamics

    English-Russian base dictionary > aerodynamics

  • 30 applied mathematics

    Синонимический ряд:
    science (noun) aerodynamics; astrophysics; mechanics; natural philosophy; nuclear physics; physics; science; science of matter and motion; thermodynamics

    English-Russian base dictionary > applied mathematics

  • 31 astrophysics

    n употр. с гл. в ед. и мн. ч. астрофизика
    Синонимический ряд:
    science (noun) aerodynamics; applied mathematics; mechanics; natural philosophy; nuclear physics; physics; science; science of matter and motion; thermodynamics

    English-Russian base dictionary > astrophysics

  • 32 mechanics

    n механика

    mechanics of fluids — механика жидкостей и газов, гидромеханика

    Синонимический ряд:
    science (noun) aerodynamics; applied mathematics; astrophysics; natural philosophy; nuclear physics; physics; science; science of matter and motion; thermodynamics

    English-Russian base dictionary > mechanics

  • 33 thermodynamics

    n термодинамика
    Синонимический ряд:
    science (noun) aerodynamics; applied mathematics; astrophysics; mechanics; natural philosophy; nuclear physics; physics; science; science of matter and motion

    English-Russian base dictionary > thermodynamics

  • 34 Cayley, Sir George

    SUBJECT AREA: Aerospace
    [br]
    b. 27 December 1773 Scarborough, England
    d. 15 December 1857 Brompton Hall, Yorkshire, England
    [br]
    English pioneer who laid down the basic principles of the aeroplane in 1799 and built a manned glider in 1853.
    [br]
    Cayley was born into a well-to-do Yorkshire family living at Brompton Hall. He was encouraged to study mathematics, navigation and mechanics, particularly by his mother. In 1792 he succeeded to the baronetcy and took over the daunting task of revitalizing the run-down family estate.
    The first aeronautical device made by Cayley was a copy of the toy helicopter invented by the Frenchmen Launoy and Bienvenu in 1784. Cayley's version, made in 1796, convinced him that a machine could "rise in the air by mechanical means", as he later wrote. He studied the aerodynamics of flight and broke away from the unsuccessful ornithopters of his predecessors. In 1799 he scratched two sketches on a silver disc: one side of the disc showed the aerodynamic force on a wing resolved into lift and drag, and on the other side he illustrated his idea for a fixed-wing aeroplane; this disc is preserved in the Science Museum in London. In 1804 he tested a small wing on the end of a whirling arm to measure its lifting power. This led to the world's first model glider, which consisted of a simple kite (the wing) mounted on a pole with an adjustable cruciform tail. A full-size glider followed in 1809 and this flew successfully unmanned. By 1809 Cayley had also investigated the lifting properties of cambered wings and produced a low-drag aerofoil section. His aim was to produce a powered aeroplane, but no suitable engines were available. Steam-engines were too heavy, but he experimented with a gunpowder motor and invented the hot-air engine in 1807. He published details of some of his aeronautical researches in 1809–10 and in 1816 he wrote a paper on airships. Then for a period of some twenty-five years he was so busy with other activities that he largely neglected his aeronautical researches. It was not until 1843, at the age of 70, that he really had time to pursue his quest for flight. The Mechanics' Magazine of 8 April 1843 published drawings of "Sir George Cayley's Aerial Carriage", which consisted of a helicopter design with four circular lifting rotors—which could be adjusted to become wings—and two pusher propellers. In 1849 he built a full-size triplane glider which lifted a boy off the ground for a brief hop. Then in 1852 he proposed a monoplane glider which could be launched from a balloon. Late in 1853 Cayley built his "new flyer", another monoplane glider, which carried his coachman as a reluctant passenger across a dale at Brompton, Cayley became involved in public affairs and was MP for Scarborough in 1832. He also took a leading part in local scientific activities and was co-founder of the British Association for the Advancement of Science in 1831 and of the Regent Street Polytechnic Institution in 1838.
    [br]
    Bibliography
    Cayley wrote a number of articles and papers, the most significant being "On aerial navigation", Nicholson's Journal of Natural Philosophy (November 1809—March 1810) (published in three numbers); and two further papers with the same title in Philosophical Magazine (1816 and 1817) (both describe semi-rigid airships).
    Further Reading
    L.Pritchard, 1961, Sir George Cayley, London (the standard work on the life of Cayley).
    C.H.Gibbs-Smith, 1962, Sir George Cayley's Aeronautics 1796–1855, London (covers his aeronautical achievements in more detail).
    —1974, "Sir George Cayley, father of aerial navigation (1773–1857)", Aeronautical Journal (Royal Aeronautical Society) (April) (an updating paper).
    JDS

    Biographical history of technology > Cayley, Sir George

  • 35 Thomson, Sir William, Lord Kelvin

    [br]
    b. 26 June 1824 Belfast, Ireland (now Northern Ireland)
    d. 17 December 1907 Largs, Scotland
    [br]
    Irish physicist and inventor who contributed to submarine telegraphy and instrumentation.
    [br]
    After education at Glasgow University and Peterhouse, Cambridge, a period of study in France gave Thomson an interest in experimental work and instrumentation. He became Professor of Natural Philosophy at Glasgow in 1846 and retained the position for the rest of his career, establishing the first teaching laboratory in Britain.
    Among his many contributions to science and engineering was his concept, introduced in 1848, of an "absolute" zero of temperature. Following on from the work of Joule, his investigations into the nature of heat led to the first successful liquefaction of gases such as hydrogen and helium, and later to the science of low-temperature physics.
    Cable telegraphy gave an impetus to the scientific measurement of electrical quantities, and for many years Thomson was a member of the British Association Committee formed in 1861 to consider electrical standards and to develop units; these are still in use. Thomson first became Scientific Adviser to the Atlantic Telegraph Company in 1857, sailing on the Agamemnon and Great Eastern during the cable-laying expeditions. He invented a mirror galvanometer and more importantly the siphon recorder, which, used as a very sensitive telegraph receiver, provided a permanent record of signals. He also laid down the design parameters of long submarine cables and discovered that the conductivity of copper was greatly affected by its purity. A major part of the success of the Atlantic cable in 1866 was due to Thomson, who received a knighthood for his contribution.
    Other instruments he designed included a quadrant electrostatic voltmeter to measure high voltages, and his "multi-cellular" instrument for low voltages. They could be used on alternating or direct current and were free from temperature errors. His balances for precision current measurement were widely used in standardizing laboratories.
    Thomson was a prolific writer of scientific papers on subjects across the whole spectrum of physics; between 1855 and 1866 he published some 110 papers, with a total during his life of over 600. In 1892 he was raised to the peerage as Baron Kelvin of Largs. By the time of his death he was looked upon as the "father" of British physics, but despite his outstanding achievements his later years were spent resisting change and progress.
    [br]
    Principal Honours and Distinctions
    Knighted 1866. Created Lord Kelvin of Largs 1892. FRS 1851. President, Royal Society 1890–4. An original member of the Order of Merit 1902. President, Society of Telegraph Engineers 1874. President, Institution of Electrical Engineers 1889 and 1907. Royal Society Royal Medal 1856, Copley Medal 1883.
    Bibliography
    1872, Reprints of Papers on Electrostatics and Magnetism, London; 1911, Mathematical and Physical Papers, 6 vols, Cambridge (collections of Thomson's papers).
    Further Reading
    Silvanus P.Thompson, 1910, The Life of William Thomson, Baron Kelvin of Largs, 2 vols, London (an uncritical biography).
    D.B.Wilson, 1987, Kelvin and Stokes: A Comparative Study in Victorian Physics, Bristol (provides a present-day commentary on all aspects of Thomson's work).
    J.G.Crowther, 1962, British Scientists of the 19th Century, London, pp. 199–257 (a short critical biography).
    GW

    Biographical history of technology > Thomson, Sir William, Lord Kelvin

  • 36 भावः _bhāvḥ

    भावः [भू-भावे घञ्]
    1 Being, existing, existence; नासतो विद्यते भावः Bg.2.16.
    -2 Becoming, occurring, taking place.
    -3 State, condition, state of being; लताभावेन परिणतमस्या रूपम् V.4; U.6.23; so कातरभावः, विवर्णभावः &c.
    -4 Manner, mode.
    -6 Rank, station, position, capacity; देवीभावं गमिता K. P.1; so प्रेष्यभावम्, किंकरभावम् &c.
    -6 (a) True condition or state, truth, reality; परं भावमजानन्तः Bg.7.24; इति मत्वा भजन्ते मां बुधा भावसम- न्विताः 1.8. (b) Sincerity, devotion; त्वयि मे भावनिबन्धना रतिः R.8.52;2.26.
    -7 Innate property, disposition, nature, temperament; स तस्य स्वो भावः प्रकृतिनियतत्वादकृतकः U.6.14.
    -8 Inclination or disposition of mind, idea, thought, opinion, supposition; हृदयनिहितभावा गूढमन्त्रप्रचाराः किमपि विगणयन्तो बुद्धिमन्तः सहन्ते Pt.3.43; Ms.8.25;4.65; निकृष्टोत्कृष्टयोर्भावं यास्तु गृह्णन्ति ताः स्त्रियः Bu. Ch.4.23.
    -9 Feeling, emotion, sentiment; एको भावः Pt.3.66; Ku.6. 95; निर्विकारात्मके चित्ते भावः प्रथमविक्रिया S. D. (In the dramatic science or in poetic compositions generally, Bhāvas are either स्थायिन् primary, or व्यभिचारिन् subordinate. The former are eight or nine, according as the Rasas are taken to be 8 or 9, each rasa having its own स्थायिभाव. The latter are thirty-three of thirty four in number, and serve to develop and strengthen the prevailing sentiment; for definition and enumera- tion of the several kinds, see R. G. first ānana, or K. P.4).
    -1 Love, affection; attachment; द्वन्द्वानि भावं क्रियया विवव्रुः Ku.3.35; कुमुद्वती भानुमतीव भावं (बबन्ध) R.6.36.
    -11 Purport, drift, gist, substance; इति भावः (often used by commentators); जनको$प्युत्स्मयन् राजा भावमस्या विशेषयन् । प्रतिजग्राह भावेन भावमस्या नृपोत्तम Mb.12,32.18.
    -12 Meaning, intention, sense, import; अन्योन्यभावचतुरेण सखीजनेन मुक्तास्तदा स्मितसुधामधुराः कटाक्षाः Māl.1.25.
    -13 Resolution, determination.
    -14 The heart, soul, mind; तयोर्विवृतभावत्वात् Māl.1.12; भावसंशुद्धिरित्येतत् तपो मानसमुच्यते Bg.17.16; स्व एव भावे विनिगृह्य मन्मथम् Bu. Ch.4.11.
    -15 Any existing thing, an object, a thing, substance; पश्यन्ती विविधान् भावान् Rām.2.94.18; जगति जयिनस्ते ते भावा नवेन्दुकलादयः Māl.1.17,36; R.3.41; U.3.32.
    -16 A being, living creature.
    -17 Abstract medita- tion, contemplation (= भावना q. v.).
    -18 Conduct, movement.
    -19 (a) Gesture, behaviour; अहिंसा समता... भवन्ति भावा भूतानाम् Bg.1.5. (b) Amorous gesture or expression of sentiment; gesture of love; कामं प्रिया न सुलभा मनस्तु तद्भावदर्शनाश्वासि Ś.2.1.
    -2 Birth; तवाहं पूर्वके भावे पुत्रः परपुरंजय Rām.7.14.2.
    -21 The world, universe.
    -22 The womb.
    -23 Will; घोरैर्विव्यधतुर्बाणैः कृतभावावुभौ जये Rām.6.9.38.
    -24 Superhuman power; मिथो घ्नतं न पश्यन्ति भावैर्भावं पृथग्दृशः Bhāg.1.4.27.
    -25 Advice, instruction.
    -26 (In dramas) A learned or venerable man, worthy man, (a term of address); भाव अयमस्मि V.1; तां खलु भावेन तथैव सर्वे वर्ग्याः पाठिताः) Māl.1.
    -27 (In gram.) The sense of an abstract noun, abstract idea conveyed by a word; भावे क्तः.
    -28 A term for an impersonal passive or neuter verb.
    -29 (In astr.) An astronomical house.
    -3 A lunar mansion.
    -31 An organ of sense.
    -32 Welfare (कल्याण); भावमिच्छति सर्वस्य नाभावे कुरुते मनः Mb.5.36.16.
    -33 Protection; द्रोणस्याभावभावे तु प्रसक्तानां यथा$भवत् Mb.7.25.64.
    -34 Fate, destiny (प्रारब्ध); नातिप्रहीणरश्मिः स्यात्तथा भावविपर्यये Mb.5.77.14.
    -35 Consciousness of past perceptions (वासना); येभ्यः सृजति भूतानि काले भावप्रचोदितः । महाभूतानि पञ्चेति तान्याहुर्भूतचिन्तिकाः ॥ Mb.12.275.4.
    -36 Lordship (प्रभुत्व); ते$पि भावाय कल्पन्ते राजदण्डनिपीडिताः Rām.2.67. 32.
    -37 The six states (अवस्थाषट्क); A, Rām.1.7.31.
    -Comp. -अनुग a. not forced, natural. (
    -गा) a shadow.
    -अन्तरम् a different state.
    -अद्वैतम् 1 a natu- ral cause.
    -2 material cause (as thread of a cloth).
    -3 identity of conception, oneness of view.
    -अर्थः 1 the obvious meaning or import (of a word, phrase &c.).
    -2 the subject matter; सर्वेषामपि वस्तूनां भावार्थो भवति स्थितः Bhāg.1.14.57.
    -आकूतम् (secret) thoughts of the mind; हृदयनिहितं भावाकूतं वमद्भिरिवेक्षणैः Amaru.4.
    -आख्यः One of the two types of creation according to the Sāṅkhya philosophy; लिङ्गाख्यो भावाख्यस्तस्माद् द्विविधः प्रवर्तते सर्गः Sāṅ. K.52.
    -आत्मक a. real, actual.
    -आभासः simulation of a feeling, a feigned or false emotion.
    -आलीना a shadow.
    - एकरस a. influenced solely by the sentiment of (sincere) love; ममात्र भावैकरसं मनः स्थितम् Ku.5.82.
    -कर्तृकः an impersonal verb; Kāśi. on P. II.3.54.
    -गतिः f. power to convey human feelings; भावगतिराकृतीनाम् Pratimā 3.
    -गम्भीरम् ind.
    1 heartily, from the bottom of the heart.
    -2 deeply, gravely.
    -गम्य a. conceived by the mind; ममत्सादृश्यं विरहतनु वा भावगम्यं लिखन्ती Me.87.
    -ग्राहिन् a.
    1 understanding the sense.
    -2 appreciating the sentiment.
    -ग्राह्य a. to be conceived with the heart; भावग्राह्यमनीडाख्यं भावाभावकरं शिवम् Śvet. Up.5.14.
    -चेष्टितम् amorous gesture.
    -जः 1 love.
    -2 the god of love.
    -ज्ञ, -विद् a. knowing the heart.
    -दर्शिन् a. see भालदर्शिन्.
    -निर्वृत्तिः the material creation (Sāṅ. phil.); न विना लिङ्गेन भावनिर्वृत्तिः Sāṅ. K.52.
    -नेरिः a kind of dance.
    -बन्धन a. enchanting or fettering the heart, linking together the hearts; रथाङ्गनाम्नोरिव भावबन्धनं बभूव यत्प्रेम परस्पराश्रयम् R.3.24.
    -बोधक a. indicating or revealing any feeling.
    -मिश्रः a worthy person, a gentleman (used in dramas); प्रसीदन्तु भावमिश्राः Ś.6.
    -रूप a. real, actual.
    -वचनम् denoting an abstract idea, conveying the abstract notion of a verb.
    -वाचकम् an abstract noun.
    -विकारः a property of a being; षड् भावविकारा भवन्तीति वार्ष्यायणिः । जायते$स्ति विपरिणमते वर्धते$पक्षीयते नश्यति ।
    -वृत्तः an epithet of Brahman.
    -शबलत्वम् a mixture of various emotions (भावानां बाध्यबाधकभावमापन्नानामुदासीनानां वा व्यामिश्रणम् R. G., vide examples given ad loc.).
    -शुद्धिः f. purity of mind, honesty, sincerity.
    -शून्य a. devoid of real love; उपचारविधिर्मनस्विनीनां न तु पूर्वाभ्यधिको$पि भावशून्यः M.3.3.
    -संधिः the union or co-existence of two emotions (भावसंधिरन्योन्यानभिभूतयोरन्योन्याभिभावनयोग्ययोः सामानाधिकरण्यम् R. G., see the examples there given).
    -समाहित a. abstracted in mind, devout.
    -सर्गः the mental or intellectual creation; i. e. the creation of the faculties of the human mind and their affections (opp. भौतिकसर्ग or material creation).
    -स्थ a. attached; devoted (to one); न वेत्सि भावस्थमिमं कथं जनम् Ku.5.58.
    -स्थिर a. firmly rooted in the heart; Ś.5.2.
    -स्निग्ध a. affection- ately disposed, sincerely attached; भावस्निग्धैरुपकृतमपि द्वेष्यतां याति किंचित् Pt.1.285.
    -भावंगम a. charming, lovely.

    Sanskrit-English dictionary > भावः _bhāvḥ

  • 37 subject

    1 noun ['sʌbdʒɪkt]
    (a) (topic) sujet m;
    ∎ on the subject of au sujet de, à propos de;
    ∎ this will be the subject of my next lecture ma prochaine conférence portera sur ce sujet;
    ∎ to wander from the subject s'écarter du sujet, faire une digression;
    ∎ let's come or get back to the subject revenons à nos moutons;
    ∎ don't try and change the subject n'essaie pas de changer de sujet ou de détourner la conversation;
    ∎ let's drop the subject parlons d'autre chose;
    ∎ while we're on the subject à (ce) propos;
    ∎ while we're on the subject of holidays puisque nous parlons de vacances;
    ∎ that's a touchy subject c'est un sujet délicat
    (b) (of legal case, contract) objet m;
    ∎ (in letters and memos) subject: recruitment of new staff objet: recrutement de personnel
    ∎ the subject of her film/novel le sujet de son film/roman;
    ∎ he always photographs his subjects in natural light il photographie toujours ses sujets en lumière naturelle
    (d) Grammar & Philosophy sujet m
    (e) School & University matière f, discipline f; (field) domaine m;
    ∎ she's taking exams in four subjects elle passe des examens dans quatre matières;
    ∎ I was always better at science subjects j'ai toujours été plus fort en sciences;
    ∎ it's not really my subject ce n'est pas vraiment mon domaine;
    ∎ that would be a good subject for a PhD thesis ce serait un bon sujet pour une thèse de doctorat
    (f) Politics (of monarch) sujet(ette) m,f;
    ∎ she is a British subject c'est une ressortissante britannique;
    ∎ foreign subjects ressortissants mpl étrangers
    ∎ she'd be a good subject for the new treatment elle serait un bon sujet pour le nouveau traitement;
    ∎ subjects were tested for their reactions on a testé la réaction des sujets
    (h) (cause) objet m;
    ∎ he was the subject of much comment il a été l'objet de nombreux commentaires
    2 adjective ['sʌbdʒɪkt]
    (a) (subordinate → people, country) assujetti, soumis;
    ∎ they are subject to my authority ils sont placés sous mon autorité, ils dépendent de moi;
    ∎ we are all subject to the rule of law nous sommes tous soumis à la loi;
    ∎ subject states États mpl dépendants
    (b) (liable, prone)
    ∎ subject to sujet à;
    ∎ he is subject to frequent lung infections il est sujet à de fréquentes infections pulmonaires;
    ∎ subject to attack exposé à l'attaque;
    ∎ to be subject to violent changes of mood/fits of jealousy être sujet à de brusques sautes d'humeur/des crises de jalousie;
    ∎ the terms are subject to alteration without notice les termes peuvent être modifiés sans préavis;
    ∎ subject to tax imposable, assujetti à l'impôt;
    ∎ the price is subject to a handling charge les frais de manutention sont en sus;
    ∎ all trains will be subject to delay des retards sont à prévoir sur toutes les lignes
    3 transitive verb [sʌb'dʒekt]
    (a) (country, people) soumettre, assujettir
    ∎ to subject to soumettre à;
    ∎ to subject sb/sth to an examination faire subir un examen à qn/qch, soumettre qn/qch à un examen;
    ∎ the material was subjected to intense heat le matériau a été soumis ou exposé à une température très élevée;
    ∎ I refuse to subject anyone to such indignities je refuse de faire subir de tels affronts à qui que ce soit;
    ∎ their plans were subjected to much criticism leurs projets ont fait l'objet de nombreuses critiques
    ['sʌbdʒɪkt] (save for) sous réserve de, sauf; (conditional upon) à condition de;
    ∎ these are the rules, subject to revision voici le règlement, sous réserve de modification;
    ∎ subject to your passing the exam à condition de réussir ou à condition que vous réussissiez l'examen;
    ∎ it's all subject to her approval tout est subordonné à son approbation
    ►► subject catalogue fichier m par matières;
    subject index index m des matières;
    subject matter (topic) sujet m, thème m; (substance) substance f, contenu m

    Un panorama unique de l'anglais et du français > subject

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