Isaac Newton’s Principia Mathematica or the Mathematical Principles of Natural Philosophy, first published in 1687, is considered one of the greatest works of scientific literature. This edition was published in Amsterdam in 1714.
Proposition LIII, Problem xxxv reads:
Granting the quadratures of curvilinear figures, it is required to find the forces under which bodies moving in curved lines may always perform their oscillations in equal times.
Let the density of any fluid be proportional to the compression, and its parts to be attracted downwards by gravitation reciprocally proportional to the square of the distances from the centre: I say, that if the distances be taken in harmonic progression, the densities of the fluid at those distances will be in a geometric progression.
The Special Collections staff at the Linderman Library of Lehigh University in Bethlehem, Pennsylvania, is pleased to cooperate with the Mathematical Association of America to exhibit this and other items from the Library’s holdings in “Mathematical Treasures.” In particular, Convergence would like to thank Lois Fischer Black, Curator, Special Collections, and Ilhan Citak, Archives and Special Collections Librarian, for their kind assistance in helping to make this display possible. You may use these images in your classroom; all other uses require permission from the Special Collections staff, Linderman Library, Lehigh University.