Space, Time, Motion: An Historical Introduction to the General Theory of Relativity

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A. A. Knopf, 1924 - 232 من الصفحات
 

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الصفحة 52 - Every body continues in its state of rest or of uniform motion in a straight line, except in so far as it may be compelled by impressed forces to change that state.
الصفحة 36 - And these things being rightly dispatched, does it not appear from phenomena, that there is a Being incorporeal, living, intelligent, omnipresent, who in infinite space, as it were, in his sensory, sees the things themselves intimately, and thoroughly perceives them, and comprehends them wholly by their immediate presence to himself...
الصفحة 182 - 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 in philosophical! matters a competent faculty of thinking, can ever fall into it.
الصفحة 52 - Change of motion is proportional to the impressed force and takes place in the direction of the straight line in which the force acts.
الصفحة 111 - (1) That small portions of space are of a nature analogous to little hills on a surface which is on the average flat ; namely, that the ordinary laws of geometry are not valid in them.
الصفحة 36 - He is not eternity and infinity, but eternal and infinite; he is not duration or space, but he endures and is present. He endures forever, and is everywhere present; and, by existing always and everywhere, he constitutes duration and space.
الصفحة 178 - The effects which distinguish absolute from relative motion are the forces of receding from the axis of circular motion. For there are no such forces in a circular motion purely relative, but in a true and absolute circular motion they are greater or less, according to the quantity of the motion.
الصفحة 111 - I hold in fact (1) That small portions of space are in fact of a nature analogous to little hills on a surface which is on the average flat ; namely, that the ordinary laws of geometry are not valid in them. (2) That this property of being curved or distorted is continually being passed on from one portion of space to another after the manner of a wave. (3) That this variation of the curvature of space is what really happens in that phenomenon which we call the motion of matter, whether ponderable...
الصفحة 87 - Obviously it does not matter if we think of the earth as turning round on its axis, or at rest while the fixed stars revolve round it.
الصفحة 88 - But if we think of the earth at rest and the other celestial bodies revolving round it, there is no flattening of the earth, no Foucault's experiment, and so on — at least according to our usual conception of the law of inertia. Now, one can solve the difficulty in two ways: Either all motion is absolute, or our law of inertia is wrongly expressed. Neumann preferred the first supposition, I, the second. The law of inertia must be so conceived that exactly the same thing results from the second...

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