Memoirs of the Life, Writings, and Discoveries of Sir Isaac Newton, Volum 1T. Constable and Company, 1855 - 1042 sider |
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Side 29
... reflected or refracted to a point or focus by mirrors or lenses , whose surfaces were paraboloidal , ellipsoidal , or hyperboloidal , or of some other form not spherical . Des- cartes had even invented and described machines by which ...
... reflected or refracted to a point or focus by mirrors or lenses , whose surfaces were paraboloidal , ellipsoidal , or hyperboloidal , or of some other form not spherical . Des- cartes had even invented and described machines by which ...
Side 39
... reflection , nor refraction , nor from the qualities or any other condi- tions of bodies whatever , and that it cannot be destroyed or in any way changed by them . " 2 After our author had purchased his glass prism at Stourbridge Fair ...
... reflection , nor refraction , nor from the qualities or any other condi- tions of bodies whatever , and that it cannot be destroyed or in any way changed by them . " 2 After our author had purchased his glass prism at Stourbridge Fair ...
Side 47
... reflected by the speculum were received upon a plane metallic speculum inclined 45 ° to the axis of the tube , so as to reflect them to the side of the tube in which there was an aperture to receive a small tube with a plano - convex ...
... reflected by the speculum were received upon a plane metallic speculum inclined 45 ° to the axis of the tube , so as to reflect them to the side of the tube in which there was an aperture to receive a small tube with a plano - convex ...
Side 50
... reflected through the aperture in the former upon a lens which magnifies it . In the reflecting telescope proposed by Cassegrain , the image formed by the larger speculum is received by a small convex speculum , the effect of which is ...
... reflected through the aperture in the former upon a lens which magnifies it . In the reflecting telescope proposed by Cassegrain , the image formed by the larger speculum is received by a small convex speculum , the effect of which is ...
Side 74
... reflection from mirrors , or from natural bodies , nor by any other cause that he could observe , notwithstanding his utmost endeavours to change it . It might become fainter or brighter , but its colour never changed . Its ...
... reflection from mirrors , or from natural bodies , nor by any other cause that he could observe , notwithstanding his utmost endeavours to change it . It might become fainter or brighter , but its colour never changed . Its ...
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Memoirs of the Life, Writings and Discoveries of Sir Isaac Newton, Volum 1 David Brewster Uten tilgangsbegrensning - 1855 |
Memoirs of the Life, Writings, and Discoveries of Sir Isaac Newton, Volum 1 David Brewster Uten tilgangsbegrensning - 1855 |
Memoirs of the Life, Writings, and Discoveries of Sir Isaac Newton, Volum 1 David Brewster Uten tilgangsbegrensning - 1860 |
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æther ætherial angle appear astronomer blue bodies Cambridge cause centre colours of thin comets degree density Descartes diffracting discourse discovered discovery distance doctrine earth edition Edleston ellipsis endeavour ether experiments feet fibres Flamsteed fluid force fringes Galileo glass gravity green Halley Hooke Hooke's Huygens hypothesis inches invention Jupiter Kepler Laplace Leibnitz lens letter mathematical medium metal Micrographia moon moon's motion nature nerves Newtonian object observations Oldenburg opinion optic nerves Optics orbit paper particles passing phenomena Phil philosopher planets pores Principia printed prism produced published rarer rays reflected reflecting telescope reflexion refractive power refrangibility remarkable retina rings Royal Society Saturn shew side Sir Isaac Newton Solar space spectrum speculum stars superficies suppose surface telescope theory thickness thin plates things tion Tobias Mayer Trans Trinity College truth vibrations violet yellow
Populære avsnitt
Side 142 - If I have seen farther, it is by standing on the shoulders of giants.
Side 148 - Are not all hypotheses erroneous in which light is supposed to consist in pression or motion propagated through a fluid medium? If it consisted in pression or motion, propagated either in an instant, or in time, it would bend into the shadow.
Side 72 - I am purposing them to be considered of and examined on account of a philosophical discovery, which induced me to the making of the said telescope, and which I doubt not but will prove much more grateful than the communication of that instrument, being, in my judgment, the oddest if not the most considerable detection which hath hitherto been made in the operations of nature.
Side 267 - Harmonics ; what I had promised my friends in the title of this book, which I named before I was sure of my discovery ; what, sixteen years ago, I urged as a thing to be sought ; that for which I joined Tycho Brahe, for which...
Side 201 - Are not the rays of light in passing by the edges and sides of bodies bent several times backWards and forwards with a motion like that of an eel? And do not the three fringes of light above mentioned arise from three such bendings ?" The idea thus indistinctly thrown out in the preceding queries has been ingeniously interpreted by Mr.
Side 75 - Hence, therefore, it comes to pass, that whiteness is the usual colour of light; for light is a confused aggregate of rays indued with all sorts of colours, as they are promiscuously darted from the various parts of luminous bodies.
Side 441 - 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 238 - ... fancy, which I must confess is too hard a knot for me to untie. To place this effect in a constant motion is hard, because the sun ought then to appear perpetually It seems rather to consist in a disposition of the sensorium to move the imagination strongly, and to be easily moved both by the imagination and by the light as often as bright objects are looked upon.
Side 442 - Now is not this very fine ? Mathematicians, that find out, settle, and do all the business, must content themselves with being nothing but dry calculators and drudges ; and another, that does nothing but pretend and grasp at all things, must carry away all the invention, as well of those that were to follow him, as of those that went before.
Side 96 - I see I have made myself a slave to Philosophy, but if I get free of Mr Linus' business I will resolutely bid adieu to it eternally, except what I do for my private satisfaction or leave to come out after me. For I see a man must either resolve to put out nothing new or to become a slave to defend it...