From Newton to Einstein: Changing Conceptions of the UniverseD. Van Nostrand Company, 1920 - 116 lappuses |
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absolute ALBERT EINSTEIN apple Arcturus astronomers atoms attractive power body in space Cambridge compared conception corpuscular theory deduced definite deflection direction distance Eclipse Expedition Einstein Einstein's formulæ Einstein's law Einstein's theory elec electricity electromagnetic electrons energy equations ether experiment fact force formulæ four dimensions gravitational field gravitational pull Huyghens ideas inertia intervals J. J. Thomson J. S. Ames Kepler law of gravitation laws of motion length light rays light waves Lorentz magnet mass mathematical transformation measuring measuring space medium Mercury Minkowski minute moon Nature of Matter Newton's law Note observer orbit particles of matter path phenomena philosophical picture planets postulated Prof ray of light result revolves rotation set of axes showed Sir Oliver Lodge solar system stars system of coordinates theory of gravitation theory of relativity tion tonian tricity true uniform velocity universe velocity of light wave theory waves set world-line Zeeman effect
Populāri fragmenti
7. lappuse - Every body continues in its state of rest or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it.
15. lappuse - 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 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.
4. lappuse - I offer this work as the mathematical principles of philosophy, for the whole burden of philosophy seems to consist in this — from the phenomena of motions to investigate the forces of nature, and then from these forces to demonstrate the other phenomena; and to this end the general propositions in the first and second Books are directed.
8. lappuse - The change of motion is proportional to the motive force impressed ; and is made in the direction of the right line in which that force is impressed.
4. lappuse - I wish we could derive the rest of the phenomena of Nature by the same kind of reasoning from mechanical principles, for I am induced by many reasons to suspect that they may all depend upon certain forces by which the partides of bodies, by some causes hitherto unknown, are either mutually impelled towards one another, and cohere in regular figures, or are repelled and recede from one another.
4. lappuse - I give an example of this in the explication of the System of the World; for by the propositions mathematically demonstrated in the former Books, in the third I derive from the celestial phenomena the forces of gravity with which bodies tend to the sun and the several planets. Then from these forces, by other propositions which are also mathematical, I deduce the motions of the planets, the comets, the moon, and the sea.
105. lappuse - This is the most important result obtained in connection with the theory of gravitation since Newton's day, and it is fitting that it should be announced at a meeting of the Society so closely connected with him . . . 29 If his theory is right, it makes us take an entirely new view of gravitation.
81. lappuse - straight," "plane," etc., accordingly lose their exact meaning in physics. In the generalized theory of relativity, the doctrine of space and time; kinematics, is no longer one of the absolute foundations of general physics. The geometrical states of bodies and the rates of clocks depend in the first place on their gravitational fields, which again are produced by the material systems concerned. Thus, the new theory of gravitation diverges widely from that of Newton with respect to its basal principle....
82. lappuse - ... 1. In the revolution of the ellipses of the planetary orbits round the sun (confirmed in the case of Mercury). 2. In the curving of light rays by the action of gravitational fields (confirmed by the English photographs of eclipses). 3. In a displacement of the spectral lines towards the red end of the spectrum in the case of light transmitted to us from stars of considerable magnitude (unconfirmed so far).* The chief attraction of the theory lies in its logical completeness.