An Essay on Newton's Principia: With an Introd. to the Reprint Ed. by I. Bernard Cohen

adeo apse line atque adeo attraction axis body describes body move Brewster Cambridge celeritas central force centripeta centripetal force centrum circular comets conic copy corporum corpus Cotes Correspondence curve cycloid David Gregory density distance distantiae diurnal motion earth ellipseos ellipsis equal erit Flamsteed fluid focus force varying inversely force which varies geometrical progression given point given straight lines Halley to Newton Halley's Hooke Hooke's hyperbola hypothesis Invenire inverse square Isaac Newton June 20 latus rectum law of force lectures Lemma linea London manuscript medii medium whose resistance moon moon's motion of bodies motus Newton to Halley Newton's letter orbit parabola particle Pemberton pendulum perpendicular planets Portsmouth Collection Principia printed Prop proportionalis propositions quae quam quod ratio reciproce recta resistentia Rigaud Royal Society Scholium second edition SECTION spatium sphere sunt supposed tangent tempore theory third book third edition umbilicus velocity