The Annual of Scientific Discovery, Or, Year-book of Facts in Science and Art, Band 7Gould, Kendall, and Lincoln, 1856 |
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action alkaline alloy American ammonia animals apatite apparatus appears applied arranged body boiler carbonic acid carboniferous cent chloride cholera cloth coal color common connected consists containing copper cretaceous crystals cylinder Daguerreotype deposit diameter distance earth effect electricity employed engine England exhibited experiments feet fiber fire fossil glass grains gutta-percha heat hydrochloric acid improvement inches invention iron length light lime machine manganese manufacture mass matter means metal miles mineral minutes motion nitric acid observed obtained operation ordinary oxyd oxygen paper pass patented piece placed plate portion potash pounds present pressure produced Professor quantity recently rocks salt screw side silicate silicium Silurian silver soda solution species specific gravity specimens steam substance sulphate sulphuric acid surface temperature thickness tion tons tube valve vapor vessel weight whole wire wood zinc zodiacal light
Beliebte Passagen
Seite 161 - That gravity should be innate, inherent and essential to matter, so that one body may act upon another at a distance through a vacuum, without the mediation of anything else, by and through which their action and force may be conveyed from one to another, is to me so great an absurdity, that I believe no man who has in philosophical matters a competent faculty of thinking, can ever fall into it.
Seite 162 - ... suspended, ie rendered existent without action or without its equivalent action. The conservation of power is now a thought deeply impressed upon the minds of philosophic men ; and I think that, as a body, they admit that the creation or annihilation of force is equally impossible with the creation or annihilation of matter. But if we conceive the sun existing alone in space, exerting no force of gravitation exterior to it; and then- conceive another sphere in space having like conditions, and...
Seite 163 - The third sub-case remains, namely, that the power is always existing around the sun and through infinite space, whether secondary bodies be there to be acted upon by gravitation or not: and not only around the sun, but around every particle of matter which has existence. This case of a constant necessary condition to action in space, when as respects the sun the earth is not in place, and of a certain gravitating action as the result of that previous condition when the earth...
Seite 163 - Trans. 1851, p. 1) ; but the results were entirely negative. The view, if held for a moment, would imply that not merely the sun, but all matter, whatever its state, would have extra powers set up in it, if removed in any degree from gravitation; that the particles of a comet at its perihelion would have changed in character, by the conversion of some portion of their molecular force into the increased amount of gravitating...
Seite 163 - ... both are supposed to rise from a previously inert to a powerful state. On their dissociation they, by the assumption, pass into the powerless state again, and this would be equivalent to the annihilation of force. It will be easily understood, that the case of the sun or the earth, or of any one of two or more acting bodies, is reciprocal; — and also that the variation of attraction, with any degree of approach or separation of the bodies, involves the same result of creation or annihilation...
Seite 161 - ... a vacuum, without the mediation of anything else, by and through which their action and force may be conveyed from one to another, is to me so great an absurdity, that I believe no man who has in philosophical matters a competent faculty of thinking, can ever fall into it. Gravity must be caused by an agent acting constantly according to certain laws ; but whether this agent be material or immaterial, I have left to the consideration of my readers.
Seite 6 - The philosophical explanation there given of the principles of manuring and cropping gave an immediate impulse to agriculture, and directed attention to the manures which are valuable for their ammonia and mineral ingredients; and especially to guano, of which in 1840 only a few specimens had appeared in this country. The consequence was that in the next year, 1841, no less than...
Seite 151 - It having occurred to me that, if my theory was true, namely, "that the phenomena of the aurora borealis were occasioned by the action of the sun, when below the pole, on the surrounding masses of coloured ice, by its rays being reflected from the points of incidence to clouds above the pole which were before invisible," the phenomena might be artificially produced ; to accomplish this, I placed a powerful lamp to represent the sun, having a lens, at the focal distance of which I placed a rectified...