A History of the Theory of Elasticity and of the Strength of Materials: From Galilei to the Present Time, المجلد 1University Press, 1886 - 924 من الصفحات |
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عبارات ومصطلحات مألوفة
after-strain axes axis beam Bernoulli body calculated Calculus of Variations Cauchy Cauchy's coefficients cohesion compression considered constant corps solides curve cylindrical d'une deduced deflection denote deux dilatation direction dx dy dy dz Eaton Hodgkinson elastic limit elastica élastiques entitled équations equilibrium Euler experimental experiments expression fait flexure force formulae function given Hodgkinson Hooke's Law hypothesis integrals investigation iron isotropy James Bernoulli l'élasticité l'équilibre Lagerhjelm Lagrange Lamé lamina Leçons mathématiques Mécanique memoir method molecular molecules motion mouvement Navier neutral line obtained occupies pages paper plane plate Poisson pression prism problem qu'il ratio refers remarks rupture Saint-Venant Savart shews strain strength Strength of Materials stress stretch stretch-modulus suppose surface temperature theoretical theory of elasticity torsion traction tractive load transverse velocity vibrations volume Wertheim wire
مقاطع مشهورة
الصفحة 7 - Now the smallest Particles of Matter may cohere by the strongest Attractions, and compose bigger Particles of weaker Virtue; and many of these may cohere and compose bigger Particles whose Virtue is still weaker, and so on for divers Successions, until the Progression end in the biggest Particles on which the Operations in Chymistry, and the Colours of natural Bodies depend, and which by cohering compose Bodies of a sensible Magnitude.
الصفحة 591 - ... ses particules nagent en quelque sorte au milieu d'un fluide. Si ce fluide n'est pas la cause unique de tous les faits observables, il doit au moins les modifier, les propager, compliquer leurs lois. Il n'est donc plus possible d.arriver à une explication rationnelle et complète des phénomènes de la nature physique sans faire intervenir cet agent dont la présence est inévitable. On n'en saurait douter, cette intervention, sagement conduite, trouvera le secret ou la véritable cause des...
الصفحة 6 - The parts of all homogeneal hard bodies which fully touch one another stick together very strongly. And for explaining how this may be, some have invented hooked atoms/ which is begging the question...
الصفحة 6 - For it is well known that bodies act one upon another by the attractions of gravity, magnetism, and electricity; and these instances show the tenor and course of nature, and make it not improbable but that there may be more attractive powers than these. For Nature is very consonant and conformable to herself.
الصفحة 7 - And thus Nature will be very conformable to her self and very simple, performing all the great Motions of the heavenly Bodies by the Attraction of Gravity which intercedes those Bodies, and almost all the small ones of their Particles by some other attractive and repelling Powers which intercede the Particles.
الصفحة 770 - ... and the crushing weight was applied in the direction of the strata. From the experiments on the two series of pillars it appears that there is a falling off in strength in all columns from the shortest to the longest; but that the diminution is so small, when the height of the column is not greater than about...
الصفحة 8 - Fermentation, and the Cohesion of Bodies. These Principles I consider not as occult Qualities, supposed to result from the specifick Forms of Things, but as general Laws of Nature by which the Things themselves are formed; their Truth appearing to us by Phenomena, though their Causes be not yet discovered. For these are manifest qualities and their Causes only are occult.
الصفحة 75 - The modulus of the elasticity of any substance is a column of the same substance, capable of producing a pressure on its base which is to the weight causing a certain degree of compression, as the length of the substance is to the diminution of its length.
الصفحة 7 - And how such very hard Particles which are only laid together and touch only in a few Points, can stick together, and that so firmly as they do, without the assistance of something which causes them to be attracted or press'd towards one another, is very difficult to conceive.
الصفحة 619 - Mais quand il aura transformé et complété toutes lea solutions de la Mécanique céleste, il faudra s'occuper sérieusement de la Physique mathématique, ou de la Mécanique terrestre. Alors viendra nécessairement le règne des coordonnées curvilignes quelconques, qui pourront seules aborder les nouvelles questions dans toute leur généralité. Oui, cette époque définitive arrivera, mais bien tard : ceux qui les premiers, ont signalé ces nouveaux instruments, n'existeront plus et seront...