The language of Thucydides, however, seems decisive with regard to the existence of three walls. Example sentences with the word theoretical. The relations between general theory and special studies conducted on the lines we have indicated have completely changed. In 1872 Airy conceived the idea of treating the lunar theory in a new way, and at the age of seventy-one he embarked on the prodigious toil which this scheme entailed. 35. The shell heaps found on the coasts and elsewhere dispose of the theory that New Zealand was uninhabited or practically so six centuries back. In Spinoza's pantheistic theory of the world, which regards thought and extension as but two sides of one substance, the problem of becoming is submerged in that of being. Both his logical and his metaphysical studies were thus undertaken as the pre-requisites of a practical theory of human development. It has been the fashion to treat Groot and the Brothers of Common Life as "Reformers before the Reformation"; but Schulze, in the Protestant Realencyklopddie, is surely right in pronouncing this view quite unhistorical - except on the theory that all interior spiritual religion is Protestant: he shows that at the Reformation hardly any of the Brothers embraced Lutheranism, only a single community going over as a body to the new religion. general acceptance of evolution; but it seems established as a historical fact that the world has come to accept evolution, first, because of Darwin's theory of natural selection, and second, because of Darwin's exposition of the evidence for the actual occurrence of organic evolution. 4. the nature of light itself and the theory of vision. Conditional sentences are often used to discuss the results of the research studies or are part of a research hypothesis statement. - This… By this time he had ceased to devote himself to pure mathematics, and in company with his friends Mersenne and Mydorge was deeply interested in the theory of the refraction of light, and in the practical work of grinding glasses of the best shape suitable for optical instruments. But it is often the case that theory develops as practice fails; and as the theory of the Holy Roman Empire was never more vigorous than in the days of its decrepitude, so it was with the Crusades. The very effectiveness of modern criticism and analysis,which has brought great gains in almost all branches of economic theory, has made the science more difficult as a subject of ordinary study. We may do the same for other industries, theory. A theory of a still continuing subsidence of the islands was formed by Kurz in 1866 and confirmed by Oldham in 1884. The theory was that all the imperial business in Germany was supervised by the elector of Mainz, and for Italy by the elector of Cologne. 2.214) as consisting in: " (I) the dualistic opposition of the divine and the earthly; (2) an abstract conception of God, excluding all knowledge of the divine nature; (3) contempt for the world of the senses, on the ground of the Platonic doctrines of matter and of the descent of the soul from a superior world into the body; (4) the theory of intermediate potencies or beings, through whom God acts upon the world of phenomena; (5) the requirement of an ascetic self-emancipation from the bondage of sense and faith in a higher revelation to man when in a state called enthusiasm.". No argument in support of the traditional theory can be drawn from the account of Korah's revolt (Num. According to one theory, these rudimentary teeth, together with the one pair of functional teeth in each jaw that has vertical successors, represent the milk-teeth of placental mammals. Most authors of the scientific papers will use these sentences in their abstracts to discuss the reasons to conduct their study. In 1883 he went to Kiel, becoming Privatdozent, and there he began the studies in Maxwell's electro-magnetic theory which a few years later resulted in the discoveries that rendered his name famous. Elie de Beaumont, in his speculations on the relation between the direction of mountain ranges and their geological age and character, was feeling towards a comprehensive theory of the forms of crustal relief; but his ideas were too geometrical, and his theory that the earth is a spheroid built up on a rhombic dodecahedron, the pentagonal faces of which determined the direction of mountain ranges, could not be proved.'. At the hands of Stahl and his school, the phlogistic theory, by exhibiting a fundamental similarity between all processes of combustion and by its remarkable flexibility, came to be a general theory of chemical action. He issued a technical scientific treatise. What if machines did all the things they could in theory do? The above gives some idea of the evidence that has been accumulated in favour of the laws of chemical combination, laws which can be deduced from the atomic theory. In studying, therefore, such an apparently simple question as the effect of an act of parliament on wages in a small group of trades we want a general theory which we can use as a kind of index of the factors we have to consider. Of all those present, evidently he alone was not seeking anything for himself, nursed no hatred against anyone, and only desired that the plan, formed on a theory arrived at by years of toil, should be carried out. Mutation is the primary source of genetic variation upon which natural selection can act. After 1879 a theory became current in Germany (first stated in P. E. A third theory, advanced by Professor Witherow and others, is that the modern elder is intended to be, and should be, recognized as a copy of the scriptural presbyter. The theory of geograph y was advanced by Humboldt mainly by his insistence on the great principle of the unity of nature. A nobility of soldiers cannot keep down a commonalty of shrewd scientific persons. Amongst the most important of his works not already mentioned may be named the following: - Mathematical Tracts (1826) on the Lunar Theory, Figure of the Earth, Precession and Nutation, and Calculus of Variations, to which, in the second edition of 1828, were added tracts on the Planetary Theory and the Undulatory Theory of Light; Experiments on Iron-built Ships, instituted for the purpose of discovering a correction for the deviation of the Compass produced by the Iron of the Ships (1839); On the Theoretical Explanation of an apparent new Polarity in Light (1840); Tides and Waves (1842). The whole conception of force may disappear from a theory of the universe; and we can adopt a geometrical definition of motion as the shifting of one body from the neighbourhood of those bodies which immediately touch it, and which are assumed to be at rest, to the neighbourhood of other bodies. After all, the metaphysical theology of Descartes, however essential in his own eyes, serves chiefly as the ground for constructing his theory of man and of the universe. Yet really the transition from the one theory to the other was simple, it being only necessary to change the " addition or loss of phlogiston " into the " loss or addition of oxygen.". The discovery of a single fossil creature in a geological stratum of a wrong period, the detection of a single anatomical or physiological fact irreconcilable with origin by descent with modification, would have been destructive of the theory and would have made the reputation of the observer. It but remains to call attention to the fact that the earlier view of the liver as the seat of the soul gave way among many ancient nations to the theory which, reflecting the growth of anatomical knowledge, assigned that function to the heart, while, with the further change which led to placing the seat of soul-life in the brain, an attempt was made to partition the various functions of manifestations of personality among the three organs, brain, heart and liver, the intellectual activity being assigned to the first-named; the higher emotions, as love and courage, to the second; while the liver, once the master of the entire domain of soul-life as understood in antiquity, was degraded to serve as the seat of the lower emotions, such as jealousy, anger and the like. The first sentence currently describes a scientific theory thus - "A scientific theory is an explanation of some aspect of the natural world that can, in accordance with the scientific method, be repeatedly tested, using a predefined protocol of observations and experiments". But, while Robertson was in some measure the initiator of a movement, Prescott came to his task when the range of information was incomparably wider and when progress in sociologic theory had thrown innumerable convergent lights upon the progress of events. Whatever the cause, the complete restatement of economic theory, which some heroic persons demand, is clearly impossible, except on conditions not likely to be realized in the immediate future. On these grounds we discuss the nebular theory without much reference to comets. The atomic theory has been of priceless value to chemists, but it has more than once happened in the history of science that a hypothesis, after having been useful in the discovery Present and the co-ordination of knowledge, has been aban- position doned and replaced by one more in harmony with later of the discoveries. At the present day when the nebulae that are spiral in form have been shown to be so numerous, next to the fixed stars themselves, our view of the nebular theory has been somewhat modified. Sentence Examples. No scientificwork can ever address the question of how intelligence arose in a universe of undifferentiated matter. 9311 3 (against his theory of the introduction of Baal among the Arabs see, M. He and Jefferson were both imbued with the idea that government could be carried on upon a priori principles resting on the assumed perfectness of human nature, and the chief burden of carrying out this theory fell upon Gallatin. Pure scientific theory cannot tell you when you have got such a cause, or whether you ever get it at all. To appreciate the significance of the doctrines of Heraclitus, it must be borne in mind that to Greek philosophy the sharp distinction between subject and object which pervades modern thought was foreign, a consideration which suggests the conclusion that, while it is a great mistake to reckon Heraclitus with the materialistic cosmologists of the Ionic schools, it is, on the other hand, going too far to treat his theory, with Hegel and Lassalle, as one of pure Panlogism. Aristotle, admitting its usefulness, rightly describes ostracism as in theory tyrannical; Montesquieu (Esprit des lois, xii. Theories in one scientific discipline do not affect theories in other disciplines. His constructive theory comes at the end, and seems to argue thus: Since (i) there is no discoverable reason why we 3 Mansel's theism (or natural theology), and the revelation he believes in, seem both of them pure matters of assertion on his part, without evidence, or even in the teeth of the evidence as he conceives it. Theories are based off experiments and facts. Sentence Examples. Apart from the atomic theory there is no obvious reason why this should be so. Pascal and other members of Port Royal openly expressed their doubts about the place allowed to God in the system; the adherents of Gassendi met it by resuscitating atoms; and the Aristotelians maintained their substantial forms as of old; the Jesuits argued against the arguments for the being of God, and against the theory of innate ideas; whilst Pierre Daniel Huet (1630-1721), bishop of Avranches, once a Cartesian himself, made a vigorous onslaught on the contempt in which his former comrades held literature and history, and enlarged on the vanity of all human aspirations after rational truth. Examples of Hypothesis in a sentence. Whatever the obligations of the state towards the ecclesiastical society may be in pure theory, in practice they become more precise and stable when they assume the nature of a bilateral convention by which the state engages itself with regard to a third party. As the female counterpart of the Phoenician Baal (viewed as a sun-god), and on the testimony of late writers (Lucian, Herodian) that she was represented with horns, the place-name AshterothKarnaim in Gilead ("Ashteroth of the horns") has been considered ample proof in favour of the theory. It is from such a living and assimilating cell, performing as it does all the vital functions of a green plant, that, according to current theory, all the different cell-forms of a higher plant have been differentiated in the course of descent. C. Penrose, who proved the correctness of DSrpfeld's theory that the building was octostyle; its length was 318 ft., its breadth 132 ft. 64) seem to have begun near Lake Avernus; indeed, according to one theory, the Grotta della Pace would be a portion of this canal. I'm not interested in all this scientific malarkey. I don't think I would test that theory, though. How to use theory in a sentence Looking for sentences and phrases with the word theory? heliocentric example sentences. Marillier sacrifice was, at its origin, essentially a magical rite - the liberation by the effusion of a victim's blood of a magical force which was to bend the gods to the will of man; from this arose, under the influence of cult of the dead, the gift theory of sacrifice. An event or action that apparently contradicts known scientific laws and is hence thought to be due … What is neuroscience? 2 It would occupy more space than can here be allowed to give even the briefest abstract of the numerous observations which follow the statement of his theory and on which it professedly rests. His optical investigations led him to adopt in an imperfect form the undulatory theory of light, to anticipate the doctrine of interference, and to observe, independently of though subsequently to F. This suggestion has some interest, but is of no great value, either in logic or in the theory of knowledge. When the aim of the man of affairs and the hypothesis of the economist was unrestricted competition, and measures were being adopted to realize it, general theory such as the classical economists provided was perhaps a sufficiently trustworthy guide for practical statesmen and men of business.
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