The mathematical principles of natural philosophy (1803)
Newton, Isaac, Sir, 1642-1727, Motte, Andrew, d. 1734, Davis, William, 1771-1807, Emerson, William, 1701-1782, Machin, John, d. 1751, Newton, Isaac, Sir, 1642-1727. De mundi systemate. English · London, Printed for H. D. Symonds · leaf 83
nt length of its tail; and becaufe the lightis propagated from the extremity of the tail in the diredlion ofthe right line TB, that extremity muft lie fomewhere in theline TB. Suppofe it in D, and join DS cuttingTA in C. Then,becaufe the tail i» always ftretched out towards the parts f 2 68 THE… … meeting the line TA in A, and the comets head C muft ne-celTarily be found between T and A, becaufe the extremityof the tail lies fomewhere in the infinite line TB ; and all thelines SD which can poffibly be drawn from the point S to thehne TB mufi; cut the line TA fomewhere betw^een T and…
Mechanics · Celestial mechanics
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