The Chautauqua Course in Physics

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Chautauqua Press, 1889 - 326 páginas
 

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Página 311 - The law of all mechanics is — The power multiplied by the distance through which it moves, is equal to the weight multiplied by the distance through which it moves. Thus 1 Ib.
Página 249 - Spirits, at the same time, are to be fired by a spark sent from side to side through the river without any other conductor than the water ; an experiment which we some time since performed to the amazement of many.
Página 38 - that every particle of matter in the universe attracts every other particle, with a force whose direction is that of the line joining the two, and whose magnitude is directly as the product of their masses, and inversely as the square of their distances from each other.
Página 313 - The air, like other fluids, transmits the weight of its own particles, as well as any outside pressure, equally in every direction ; hence the upward pressure or buoyant force of the atmosphere. A balloon rises because it is buoyed up by a force equal to the weight of the air it displaces. It floats in the air for the same reason that a ship floats on the ocean. When smoke falls it is heavier than the surrounding atmosphere.
Página 73 - If a vessel full of water, closed on all sides, has two openings, the one a hundred times as large as the other, and if each be supplied with a piston which fits...
Página 29 - THE smallest dust which floats upon the wind Bears this strong impress of the Eternal mind : In mystery round it subtle forces roll, And gravitation binds and guides the whole.

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