A Treatise on Physics: Dynamics and properties of matter, Volume 1

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J. & A. Churchill, 1901 - 688 páginas
 

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Página 497 - The squares of the periods of revolution of any two planets are proportional to the cubes of their mean distances from the sun.
Página 4 - American inches, a standard of linear measure supposed to be the ten-millionth part of the distance from the equator to the north pole, as ascertained by actual measurement of an arc of the meridian.
Página 104 - 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.
Página 499 - ... density that causes sound to pass rapidly through them. "Other things remaining the same, an augmentation of density always produces a diminution of velocity.
Página 499 - ... every particle of matter attracts every other particle with a force proportional to the product of the masses, and inversely proportional to the square of the distance between them.
Página 400 - ... in length, and divided after the same manner. Then quicksilver being poured in to. fill up the bended part of the glass, that the surface of it in either leg might rest in the same horizontal line, as we lately taught, there was more and more quicksilver poured into the longer tube; and notice being watchfully taken how far the mercury was risen in that longer tube, when it appeared to have ascended to any of the divisions in the shorter tube, the several observations that were thus successively...
Página 96 - Prove that the algebraic sum of the moments of two concurrent forces about any point in their plane is equal to the moment of their resultant about the same point.
Página 431 - The attraction of a uniform spherical surface on an external point is the same as if the whole mass were collected at the centre 1.
Página 494 - ... originally moving in a parabola is obtained if the comet's original orbit actually intersects the planet's orbit at an angle of 45°, and if the comet is due first at the point of intersection, at the instant when the planet's distance therefrom is equal to the planet's distance from the sun multiplied by the ratio of the mass of the planet to the mass of the sun.
Página 399 - ... of about 29 inches, as we are taught by the Torricellian experiment; so here the same air being brought to a degree of density about twice as great as that it had before, obtains a spring twice as strong as formerly.

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