Space, Time and Gravitation: An Outline of the General Relativity TheoryCambridge University Press, 1921 - 218 ページ |
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absolute significance acceleration aether appears arbitrary atom centrifugal force coordinates corresponding curvature curved defined definite deflection described determine direction displacement distance dr² ds² earth eclipse Einstein's law electrical energy equations Euclidean geometry Euclidean space exist experiment experimental field of force formula four-dimensional world geodesics give gravitational field hurdles inertia interval interval-length kind of space-time law of gravitation length light-wave mass material mathematical matter meaning measures mechanics mesh-system Michelson-Morley experiment momentum moving natural geometry natural tracks Newton's law Newtonian non-Euclidean observer orbit ordinary particle partitions phenomena Phys physicist physics planet point-events possible principle of relativity properties quantity radius recognised region relations relativity theory rigid scale rotation round scales and clocks seems Sobral space speed stars straight line supposed surface terrestrial theory of relativity thing three-dimensional three-dimensional space tion uniform motion values velocity of light W. K. CLIFFORD μν
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93 ページ - I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.
167 ページ - But thou shalt have a perfect and just weight, a perfect and just measure shalt thou have : that thy days may be lengthened in the land which the LORD thy God giveth thee.
201 ページ - All through the physical world runs that unknown content, which must surely be the stuff of our consciousness. Here is a hint of aspects deep within the world of physics, and yet unattainable by the methods of physics. And, moreover, we have found that where science has progressed the farthest, the mind has but regained from nature that which the mind has put into nature. We have found a strange foot-print on the shores of the unknown. We have devised profound theories, one after another, to account...
14 ページ - Thus mathematics may be defined as the subject in which we never know what we are talking about, nor whether what we are saying is true.
197 ページ - The relativity theory of physics reduces everything to relations ; that is to say, it is structure, not material, which counts. The structure cannot be built up without material ; but the nature of the material is of no importance.
115 ページ - For in and out, above, about, below, 'Tis nothing but a Magic Shadow-show, Play'd in a Box whose Candle is the Sun, Round which we Phantom Figures come and go.
93 ページ - I don't know what I may seem to the world ; but as to myself, I seem to have been only like a boy playing on the seashore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of Truth lay all undiscovered before me.
200 ページ - It is even possible that laws which have not their origin in the mind may be irrational, and we can never succeed in formulating them.
45 ページ - For instance, here is a portrait of a man at eight years old, another at fifteen, another at seventeen, another at twenty-three, and so on. All these are evidently sections, as it were, Three-Dimensional representations of his Four-Dimensioned being, which is a fixed and unalterable thing.