The Life of Sir Isaac NewtonJ. & J. Harper, 1832 - 323 páginas |
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Página 21
... surface of a floor , and not fitted to overcome the inequalities of a road . Although * " I remember once , " says Dr. Stukely , " when I was deputy to Dr. Halley , secretary at the Royal Society , Sir Isaac talked of these kind of ...
... surface of a floor , and not fitted to overcome the inequalities of a road . Although * " I remember once , " says Dr. Stukely , " when I was deputy to Dr. Halley , secretary at the Royal Society , Sir Isaac talked of these kind of ...
Página 31
... surface a parabolic , an elliptical , or a hyperbolic form , or some other form not spher- ical . Descartes had even invented and described machines by which lenses of these shapes could be ground and polished , and the perfection of ...
... surface a parabolic , an elliptical , or a hyperbolic form , or some other form not spher- ical . Descartes had even invented and described machines by which lenses of these shapes could be ground and polished , and the perfection of ...
Página 37
... surface makes the rays deviate five or six times more from their true path than similar irregu- larities in a refracting surface , a much greater de- gree of nicety would be required in figuring reflect- ing specula than refracting ...
... surface makes the rays deviate five or six times more from their true path than similar irregu- larities in a refracting surface , a much greater de- gree of nicety would be required in figuring reflect- ing specula than refracting ...
Página 42
... surfaces ; and several of them when finished turned out useless , in consequence of the veins which then appeared in the glass . Although these instruments performed remarkably well , yet the light was fainter than he expected , and ...
... surfaces ; and several of them when finished turned out useless , in consequence of the veins which then appeared in the glass . Although these instruments performed remarkably well , yet the light was fainter than he expected , and ...
Página 51
... surface of the steel filings , and so moved over the mass , that at the end nearest to them the heaviest or coarsest will be attracted , and all the remotest and the finest or lighter filings , while the rest are at- tracted to ...
... surface of the steel filings , and so moved over the mass , that at the end nearest to them the heaviest or coarsest will be attracted , and all the remotest and the finest or lighter filings , while the rest are at- tracted to ...
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Términos y frases comunes
Abbé Conti appear astronomical attraction Bentley Biot blue bodies calculus Cambridge centre colours Colsterworth comets Commercium consequence considered curves dated degree Descartes differential calculus discoveries distance doctrine earth edition experiment favour Flamstead force fringes Galileo genius glass gravity Gregory Halley heat Hipparchus honour Hooke Huygens infinite inquiries invention James Gregory John Newton Keill Kepler labours Leibnitz letter London manuscript mathematical ment method of fluxions mind moon motion nature never Newtonian philosophy observations Oldenburg opinion Optics orbit papers Pepys phenomena philosopher planets possession Principia principles prism produced published quadrature rays received reflecting telescope refraction refrangibility remarkable Royal Society scholium seems Sir Isaac Newton space spectrum speculum stars supposed surface theory thickness thin plates tion tonian transmitted Trinity College truth Tycho Tycho Brahe views violet Whiston white light Woolsthorpe yellow
Pasajes populares
Página 300 - I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.
Página 251 - He gave this and the Prophecies of the Old Testament, not to gratify men's curiosities by enabling them to foreknow things, but that after they were fulfilled they might be interpreted by the event, and his own Providence, not the Interpreters, be then manifested thereby to the world.
Página 78 - ... that the ratio of the sines of the angles of incidence and refraction is constant for refraction in the same medium, was effected by Snell and Descartes.
Página 139 - I only hint at present to such as have ability and opportunity of prosecuting this inquiry, and are not wanting of industry for observing and calculating, wishing heartily such may be found, having myself many other things in hand, which I would first complete, and therefore cannot so well attend it. But this I...
Página 248 - For understanding the prophecies, we are, in the first place, to acquaint ourselves with the figurative language of the prophets. This language is taken from the analogy between the world natural and an empire or kingdom considered as a world politic.
Página 303 - he had a very lively and piercing eye, a comely and gracious aspect, with a fine head of hair as white as silver, without any baldness, and when his peruke was off was a venerable sight.
Página 149 - The third I now design to suppress. Philosophy is such an impertinently litigious lady, that a man had as good be engaged in lawsuits, as have to do with her.
Página 256 - WHEN I wrote my treatise about our system, I had an eye upon such principles as might work with considering men for the belief of a Deity ; and nothing can rejoice me more than to find it useful for that purpose.
Página 149 - I must again beg you," says he, "not to let your resentments run so high as to deprive us of your third book, wherein your applications of your mathematical doctrine to the theory of comets, and several curious experiments which, as I guess by what you write ought to compose it, will undoubtedly render it acceptable to those who will call themselves philosophers without mathematics, which are much the greater number.
Página 221 - I do not love to be printed upon every occasion, much less to be dunned and teased by foreigners about mathematical things, or to be thought by our own people to be trifling away my time about them, when I should be about the King's business.