An Essay on Newton's Principia

adeo apse line atque adeo attraction axis Bentley body describes body move Brewster Cambridge celeritas centre centripeta centripetal force centrum 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 gravity Halley to Newton Halley's Hooke Hooke's hyperbola hypothesis Invenire Isaac Newton June 20 latus rectum law of force lectures Lemma linea London Lunae manuscript medii medium whose resistance moon moon's motion of bodies motus Newton to Halley Newton's letter orbe orbit parabola particle Pemberton pendulum perpendicular planets Portsmouth Collection Principia printed Prop proportionalis propositions quae quam quod ratio reciproce recta resistentia Rigaud Royal Society says Scholium second edition SECTION spatium sphere sunt supposed tangent tempore third book third edition umbilicus velocity