The Family Library (Harper)., Volum 261845 |
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Side 40
... of the Royal Society of London , with the following in- scription : - " Invented by Sir Isaac Newton and made with his own hands 1671. " It does not appear that Newton executed any other reflecting 40 SIR ISAAC NEWTON .
... of the Royal Society of London , with the following in- scription : - " Invented by Sir Isaac Newton and made with his own hands 1671. " It does not appear that Newton executed any other reflecting 40 SIR ISAAC NEWTON .
Side 42
... London artist , and having proposed in 1678 to sub- stitute glass reflectors in place of metallic specula , he tried to make a reflecting telescope on this principle four feet long , and with a magnifying power of 150. The glass was ...
... London artist , and having proposed in 1678 to sub- stitute glass reflectors in place of metallic specula , he tried to make a reflecting telescope on this principle four feet long , and with a magnifying power of 150. The glass was ...
Side 43
... London artist , in- deed , undertook to imitate these instruments ; but Sir Isaac informs us , that " he fell much short of what he had attained , as he afterward understood by discoursing with the under workmen he had em- ployed ...
... London artist , in- deed , undertook to imitate these instruments ; but Sir Isaac informs us , that " he fell much short of what he had attained , as he afterward understood by discoursing with the under workmen he had em- ployed ...
Side 45
... London artists , and so great was their superiority , that his small telescopes were invariably superior to larger ones from London . In 1742 , after he had settled as an optician in the metropolis , he executed for Lord Thomas Spencer ...
... London artists , and so great was their superiority , that his small telescopes were invariably superior to larger ones from London . In 1742 , after he had settled as an optician in the metropolis , he executed for Lord Thomas Spencer ...
Side 55
... London , containing animadversions on Newton's doctrine of colours . He boldly affirms , that in a perfectly clear sky the image of the sun made by a prism is never elongated , and that the spectrum observed by Newton was not formed by ...
... London , containing animadversions on Newton's doctrine of colours . He boldly affirms , that in a perfectly clear sky the image of the sun made by a prism is never elongated , and that the spectrum observed by Newton was not formed by ...
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Abbé Conti appear astronomical attraction Bentley Biot blue bodies calculus Cambridge cause centre colours Colsterworth comets Commercium consequence considered curves dated degree Descartes differential calculus discoveries distance doctrine earth edition experiment Flamstead force fringes Galileo genius glass gravity 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 particles of light Pepys phenomena philosopher planets possession Principia principles prism produced published quadrature rays received reflecting telescope refrangibility remarkable Royal Society scholium seems Sir Isaac Newton space spectrum speculum stars supposed surface theory thickness thin plates thought tion tonian transmitted Trinity College truth Tycho Tycho Brahe views violet Whiston white light Woolsthorpe yellow
Populære avsnitt
Side 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.
Side 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...
Side 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.
Side 217 - I could not have believed what you tell me of yourself, had I had it from any body else. And though I cannot but be mightily troubled that you should have had so many wrong and unjust thoughts of me...
Side 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.
Side 216 - I desire you to forgive me this uncharitableness. For I am now satisfied that what you have done is just, and I beg your pardon for my having hard thoughts of you for it, and for representing that you struck at the root of morality, in a principle you laid down in your book of ideas, and designed to pursue in another book, and that I took you for a Hobbist.
Side 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.
Side 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.
Side 320 - I WAS on Sunday night, the 7th of March, 1724-5, at Kensington with Sir Isaac Newton, in his lodgings, just after he was come out of a fit of the gout, which he had had in both his feet, for the first time, in the eighty-third year of his age. He was better after it, and his head clearer, and memory stronger than I had known them for some time.
Side 282 - I found that, as often as I went into the dark, and intended my mind upon them, as when a man looks earnestly to see anything which is difficult to be seen, I could make the phantasm return without looking any more upon the sun; and the oftener I made it return, the more easily I could make it return again.