Annual Report of the Board of Regents of the Smithsonian Institution

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الصفحة 208 - It is inconceivable that inanimate brute matter should, without the mediation of something else which is not material, operate upon and affect other matter, without mutual contact, as it must do if gravitation in the sense of Epicurus be essential and inherent in it.
الصفحة 208 - But hitherto I have not been able to discover the cause of those properties of gravity from phenomena, and I frame no hypotheses: for whatever is not deduced from the phenomena is to be called an hypothesis ; and hypotheses, whether metaphysical or physical, whether of occult qualities or mechanical, have no place in experimental philosophy.
الصفحة 208 - 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 any thing 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.
الصفحة 129 - That, in proportion as suitable arrangements can be made for their reception, all objects of art and of foreign and curious research, and all objects of natural history, plants, and geological and mineralogical specimens, belonging or hereafter to belong, to the United States, which may be in the city of Washington...
الصفحة 208 - 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.
الصفحة 231 - I represent the received idea of the gravitating force aright in saying that it is a simple attractive force exerted between any two or all the particles or masses of matter, at every sensible distance, lut with a strength varying inversely as the square of the distance.
الصفحة 209 - I do not here consider. What I call attraction may be performed by impulse, or by some other means unknown to me. I use that Word here to signify only in general any Force by which Bodies tend towards one another, whatsoever be the Cause.
الصفحة 234 - The principle of the conservation of force would lead us to assume, that when A and B attract each other less, because of increasing distance, then some other exertion of power, either within or without them, is proportionately growing up ; and again, that when their distance is diminished, as from ten to one, the power of attraction, now increased a hundred-fold, has been produced out of some other form of power which has been equivalently reduced.
الصفحة 126 - And the said regents shall make, from the interest of said fund, an appropriation, not exceeding an average of twenty-five thousand dollars annually, for the gradual formation of a library, composed of valuable works pertaining to all departments of human knowledge.
الصفحة 233 - Then, at the distance of ten, the force may be estimated as one ; whilst at the distance of one, that is, one tenth of the former, the force will be one hundred ; and if we suppose an elastic spring to be introduced between the two as a measure of the attractive force, the power compressing it will be a hundred times as much in the latter case as in the former. But from whence can this enormous increase of power come ? If we say that it is the character of this force, and content ourselves with that...

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