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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الصفحة ix
... determined to publish in the first place the History only , it became necessary to determine how the gaps in the ' History ' which were covered by mere reference to the ' Theory ' should be filled up . With the sanction of the Syndics I ...
... determined to publish in the first place the History only , it became necessary to determine how the gaps in the ' History ' which were covered by mere reference to the ' Theory ' should be filled up . With the sanction of the Syndics I ...
الصفحة 1
... determined the direction of all the inquiries concern- ing the rupture and strength of beams , with which the physicists and mathematicians for the next century principally busied themselves . Galilei gives 17 propositions with regard ...
... determined the direction of all the inquiries concern- ing the rupture and strength of beams , with which the physicists and mathematicians for the next century principally busied themselves . Galilei gives 17 propositions with regard ...
الصفحة 3
... curves equal to ACB . In this case he easily determined that the ' solid of equal resistance ' must have a parabola for its generating curve . SOLIDS OF EQUAL RESISTANCE . PETTY . [ 5. ] 1-2 GALILEI ; SOLIDS OF EQUAL RESISTANCE . 3.
... curves equal to ACB . In this case he easily determined that the ' solid of equal resistance ' must have a parabola for its generating curve . SOLIDS OF EQUAL RESISTANCE . PETTY . [ 5. ] 1-2 GALILEI ; SOLIDS OF EQUAL RESISTANCE . 3.
الصفحة 20
... determined by experiment . In 22 the writer returns to the question of extension and compression of the fibres of the beam under flexure . He cites the two theories ; namely that of Mariotte , that the neutral line is the ' middle fibre ...
... determined by experiment . In 22 the writer returns to the question of extension and compression of the fibres of the beam under flexure . He cites the two theories ; namely that of Mariotte , that the neutral line is the ' middle fibre ...
الصفحة 29
... determined the direction of later researches , how while James Bernoulli solved the problem of the elastic curve his nephew Daniel first obtained a differential equation which really does present itself in the consideration of the ...
... determined the direction of later researches , how while James Bernoulli solved the problem of the elastic curve his nephew Daniel first obtained a differential equation which really does present itself in the consideration of the ...
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after-strain angles 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 12 - 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 923 - Press. Mathematical and Physical Papers. By Sir W. THOMSON, LL.D., DCL, FRS, Professor of Natural Philosophy in the University of Glasgow. Collected from different Scientific Periodicals from May, 1841, to the present time.
الصفحة 11 - 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 596 - ... 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 complote des phénomènes de la nature physique, sans faire intervenir cet agent, dont la présence est inévitable.
الصفحة 11 - 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 12 - 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 13 - 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 80 - 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 12 - 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 515 - From what has been stated above, deduced from experiments made with great care, it is evident that the maxim of loading bodies within the elastic limit, has no foundation in nature...