Essays on several curious and useful subjects, in speculative and mix'd mathematicks : illustrated by a variety of examples (1740)
Simpson, Thomas, 1710-1761, Adams, John, 1735-1826, former owner. BRL, John Adams Library (Boston Public Library) BRL · London : Printed by H. Woodfall, jun. for J. Nourse ... · leaf 211
Earth, PROPOSITION I. STJppofmg the Velocity of Light, in refpeB to the VelocityJufficient to retain a Body in a circular Orbit about theEarth jujl above its Surface, to be very great: I fay, thegreatejl horizontal Refraction that would arife from theAttraBion of the Earth, will be to 57° 17 44, as… … wliich a Particle of Light would defcribs thereby (fetting all otherCaufes afide) will, it is known, be one of the Conic-Sedions; and C 47 ] and therefore, fince the Velocity of Light is fuppofed verygreat in refped to the propofed circular Velocity, it muft bean Hyperbola ; whofe Semi-Tranfverfe,…
Celestial mechanics · Calculus · Astronomy
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