Nelson's Encyclopaedia Volume 5

Nelson's Encyclopaedia Volume 5

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ...of gravitation in the impact of a countless number of very small particles upon the much grosser particles which are supposed to constitute matter. If we assume these ultrsmundane cor uscles to he movin about wit high velocities, an to be able to pass freely through the spaces separating the atoms of the densest matter, then it may be shown that any two portions of matter will shield each other in such a way that more impacts will take place on the sides removed from each other than on the sides 0 posin each other, and that t is wil give rise to an attraction inversely as the square of the distance. Clerk Maxwell has discussed this theory in the light of the conservation of energy, and has found it to be insufficient for its purpose. More recently Osborne Re nolds has in an ingenious way eveloped his properties of dilatancy into a theory of the construction of the universe. He supposes the ultimate substance of the material order of things to consist of an immense number of minute grains packed closely together like grains of sand. Matter, as we know it. is a state of motion or of configuration among these grains. and between separate groups of such states Gray there are shown to be attractions of the kind_ required by the law of gravitation. In regard to ultimate theories, of which a few have been indicated, it may be said generally that the dynamical explanation of gravitation, which is, so far as we know, an attraction, is a problem of a higher order of difiiculty than the explanation of electric and magnetic forces, in which there are both attraction and repulsion. Vhatever be its origin, theforce of gravitation, as it is observed to be, is ultimately the prime source of most of the energy of the solar system. Helmholtz first more

Product details

  • Paperback | 546 pages
  • 189 x 246 x 28mm | 962g
  • United States
  • English
  • black & white illustrations
  • 1236955714
  • 9781236955715