ما يقوله الناس - كتابة مراجعة
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acting action activity actual amount argument atom ball becomes body called cause cohesive composition conception consciousness consequent Conservation continually course cylinder definite direction distance doctrine earth effect elements energy equal equivalent exerted existence experiment fact fall feet follows force further give gravity greater hand heat idea illustration impact increased Infinite instance kind kinetic knowledge known less logical manifestations mass material matter means measure mind modes motion moving muscular nature necessary objective observed original overcome particles pass Persistence phenomena philosophy physical piston position possible potential pounds present pressure principle produce Prof proposition pull quantity reality reason relation resistance rest result says seen sense side simply space Spencer steam stone supposed temperature tension term theory thing thought tion true truth unit universe velocity weight whole
الصفحة 154 - That gravity should be innate, inherent, and essential to matter, so that one body may act upon another at a distance through a vacuum, without the mediation of anything else, by and through which their action and force may be conveyed from one to. another, is to me so great an absurdity that I believe no man, who has iu philosophical matters a competent faculty of thinking, can ever fall into it.
الصفحة 354 - Evolution is an integration of matter and concomitant dissipation of motion ; during which the matter passes from an indefinite, incoherent homogeneity to a definite, coherent heterogeneity ; and during •which the retained motion undergoes a parallel transformation.
الصفحة 97 - Abandoning all disguise, the confession that I feel bound to make before you is that I prolong the vision backward across the boundary of the experimental evidence, and discern in that matter, which we in our ignorance, and notwithstanding our professed reverence for its Creator, have hitherto covered with opprobrium, the promise and potency of every form and quality of life.
الصفحة 29 - The sole truth which transcends experience by underlying it, is thus the persistence of Force. This being the basis of experience, must be the basis of any scientific organization of experiences. To this an ultimate analysis brings us down; and on this a rational synthesis must build up.
الصفحة 355 - ... recurrent beat of a harp-string. In other words, the phenomena of Evolution have to be deduced from the Persistence of Force. As before said — " to this an ultimate analysis brings us down , and on this a rational synthesis must build up.
الصفحة 24 - Carbon, hydrogen, oxygen, and nitrogen are all lifeless bodies. Of these, carbon and oxygen unite in certain proportions and under certain conditions, to give rise to carbonic acid ; hydrogen and oxygen produce water ; nitrogen and hydrogen give rise to ammonia.
الصفحة 37 - ... far as the human understanding has yet pierced, asserts itself everywhere in nature. Long in advance of all definite experiment upon the subject, the constancy and indestructibility of matter had been affirmed ; and all subsequent experience justified the affirmation. Later researches extended the attribute of indestructibility to force. This idea, applied in the first instance to inorganic, rapidly embraced organic nature. The vegetable world, though drawing almost all its nutriment from invisible...
الصفحة 155 - Thus the law of universal attraction becomes pure Metaphysics if we withdraw from it the verifiable specification of its mode of operation. Withdraw the formula " inversely as the square of the distance and directly as the mass," and Attraction is left standing a mere
الصفحة 136 - This leads us to undertake an account of the idea of Force in general. This is the great conception which, developed in the early part of the seventeenth century from the rude idea of a cause, and constantly improved upon since, has shown us how to explain all the changes of motion which bodies experience, and how to think about all physical phenomena; which has given birth to modern science, and changed the face of the globe ; and which...