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 110
hichon 1 or i spt. is againft the hypothefis (Fig. 6). If p is placed in DC, then rpq will be = 0, and thereforeRPQ = 0; and P will alfo be placed in DC. [lb. If the two oppofite angles] (Fig. 7) The As PCR,PBT are fimilar, for the angles at S and T are right, and C= B, being on the fame arc PD ;… … ON THE PRINCIPIA. Q^ and, € contra, if PR X PQ = PS X PT, the locus of thepoint P is a circle. And if thefe lines are not perpendicular, yet, iince theirlengths will be reciprocally as the fines of the angles, it willfollow that PQ X PR : PS X PI : : fine of S x S of T : fineof Q X line of R, and…
Mechanics · Celestial mechanics
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