Mathematical principles of natural philosophy ; Optics 
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LibraryThing Review
User Review  wildbill  LibraryThingThe first time I started this book I was in my teens. This time I was able to get past the first fifty pages and found an enjoyable and at times disturbing book. The book contains elements of satire ... Read full review
LibraryThing Review
User Review  donbuch1  LibraryThingThis classic series represents the Western canon not without academic controversy. The latest volumes of the Great Books include some women writers, but they are still definitely underrepresented ... Read full review
Common terms and phrases
angle appear apse arise ascend attracted axis blue body centripetal force circle colours comet common centre compounded conic section corpuscle crystal curve cycloid cylinder density descend described diameter diﬁerence diminished distance diurnal motion drawn earth ellipse equal ﬁfth ﬁgure ﬁnd ﬁrst ﬁts ﬂuid force of gravity given ratio glass globe greater hole hyperbola inches inﬁnitely inﬁnitum inversely Jupiter latitude latus rectum length less let fall light medium moon moon’s motion move nodes nonresisting obliquely observed orbit oscillations parabola parallel particles pass pendulum perpendicular plane principal vertex prism Prop propagated proportional PROPOSITION PSPT quadratures quantity radius rectangle reﬂected reﬂexion refraction refrangible rays resistance revolve right line rings semidiameter side sine of incidence space sphere spherical spheroid square root straight line Sun’s suppose surface syzygies tangent thence tion velocity violet waves weight whole yellow