Observations on the hypotheses which have been assumed to account for the cause of gravitation from mechanical principlesR. Watts ... and sold by Deighton, and Nicholson, Cambridge ... and by Lunn ... London, 1806 - 26 pagine |
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Observations on the Hypotheses which Have Been Assumed to Account for the ... Samuel Vince Visualizzazione completa - 1806 |
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accelerating force ætherial medium apsides attempted to account Bakerean Lecture BERNOULLI CASSINI cause of gravitation centro comets consider corpore solis Deity denser different powers direct ratio distance doctrine of vortices elastic fluid elastic force elastic medium fluid in terms fluid on ADB fluid surrounding fluxion force varying force which varies form one medium further give no resistance give the true hypothesis igitur illius immaterial image immateriata impel increase of density intermediate body inverse duplicate ratio law of density law of force law of gravitation law of variation locum mechanical causes motion moving force number of particles operation of mechanical Optics orbits particles vary perpendicular phænomena planet positive quantity prensandi produce quæ Quæry quantity of matter rarer recede repulsive force rx x a Saturn species spheroïde square suppose these media supposition surface surrounding the sun true quantity vero visible cause vortex x²x ха
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Pagina 25 - For it became him who created them to set them in order. And if he did so, it's unphilosophical to seek for any other Origin of the World, or to pretend that it might arise out of a Chaos by the mere Laws of Nature; though being once form'd, it may continue by those Laws for many Ages.
Pagina 15 - Qu. 20. Doth not this Ethereal Medium in passing out of Water, Glass, Crystal, and other compact and dense Bodies into empty Spaces, grow denser and denser by degrees, and by that means refract the Rays of Light not in a point, but by bending them gradually in curve Lines? And doth not the gradual condensation of this Medium extend to some distance from the Bodies...
Pagina 25 - Now, by the help of these principles, all material things seem to have been composed of the hard and solid particles above-mentioned, variously associated in the first creation by the counsel of an intelligent Agent. For it became Him who created them to set them in order.
Pagina 25 - Positions, blind Fate could never make all the Planets move one and the same way in Orbs concentrick, some inconsiderable Irregularities excepted, which may have risen from the mutual Actions of Comets and Planets upon one another, and which will be apt to increase, till this System wants a Reformation.
Pagina 15 - ... exceeding great, it may suffice to impel bodies from the denser parts of the medium towards the rarer, with all that power which we call gravity.
Pagina 15 - Is not the Heat of the warm Room convey'd through the Vacuum by the Vibrations of a much subtiler Medium than Air, which after the Air was drawn out remained in the Vacuum? And is not this Medium the same with that Medium by which Light is refracted and reflected, and by whose Vibrations Light communicates Heat to Bodies, and is put into Fits of easy Reflexion and easy Transmission?
Pagina 14 - ... much rarer within the dense bodies of the sun, stars, planets, and comets, than in the empty celestial spaces between them ? And in passing from them to great distances, doth it not grow denser and denser perpetually, and thereby cause the gravity of those great bodies towards one another, and of their parts towards the bodies ; every body endeavouring to go from the denser parts of the medium towards the rarer?
Pagina 14 - And to shew that I do not take Gravity for an essential Property of Bodies, I have added one Question concerning its Cause, chusing to propose it by way of a Question, because I am not yet satisfied about it for want of Experiments.
Pagina 25 - For while comets move in very eccentric orbs, in all manner of positions, blind fate could never make all the planets move one and the same way in orbs concentric, some inconsiderable irregularities excepted, which may have arisen from the mutual actions of comets and planets upon one another, and which will be apt to increase, till this system wants a reformation.
Pagina 15 - Body, and rarer there than at the Orb of Saturn ; I see no reason why the Increase of density should stop anywhere, and not rather be continued through all distances from the Sun to Saturn, and beyond. And though this Increase of density may at great distances be exceeding slow, yet if the...