%0 Video %T Philosophy 167: Class 13 - Part 12 - A Controversial Scholium in De Motu: Deriving the Ellipse from the Inverse Square. %A Smith, George E. (George Edwin), 1938- %D 2015-09-03T18:17:51.484Z %8 2015-09-03 %I Tufts Archival Research Center %R http://localhost/files/3n204919w %X Synopsis: Newton derived elliptical motion from his inverse square centripetal force.; Opening line: "Problem three. A body orbits an ellipse. There is required to find the law of centrifugal force tending to a focus of the ellipse."; Duration: 4:44 minutes.; Segment: Class 13, Part 12. %G eng %[ 1972-12-31 %9 Video %~ Tufts Digital Library %W Institution