Opticks: or, A treatise of the reflections, refractions, inflexions and colours of light. Also two treatises of the species and magnitude of curvilinear figures (1704)
Newton, Isaac, Sir, 1642-1727 · London : Printed for Sam Smith, and Benj. Walford, printers to the Royal Society, at the prince's Arms in St. paul's Church-yard · leaf 242
Light,as was fhewed in the firft Propofition. PROP. X. If Light be fisjifter in Bodies than in T^acuo in thefrofcrtion, of the Smes which meajure the refracHion of theBodies J the forces of the Bodies to reflet and refraB Light ^ are [71] are very nearly proportional to the den/ities of the… … Body in C, fo that the Angle A CI may be infinitelylittle, and let CR be the refracted ray. From a givenpoint B perpendicular to the refra(5ting furface ere£i:B R meeting with the refracted ray C R in R, and ifCR reprefent the motion of the refracted ray, and thismotion be diftinguifhed into two…
Optics
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