The second book, written as a rebuttal of a theory of Descartes, contains a study of air resistance and hydrostatics, while the third book, On the System of the World, contains a derivation of Kepler's laws.
A formulation of the scientific method entitled "Rules of Reasoning in Philosophy" is included at the beginning of the third part of this work. Although ideas from calculus appear in this work, the methods are primarily geometrical in nature and are referred to as "fluxions". The second book, written as a rebuttal of a theory of Descartes, contains a study of air resistance and hydrostatics, while the third book, On the System of the World, contains a derivation of Kepler's laws. For 10 points, name this book which introduces the law of universal gravitation and contains the author's three namesake laws, a Latin treatise on mechanics by Isaac Newton.
A formulation of the scientific method entitled "Rules of Reasoning in Philosophy" is included at the beginning of the third part of this work.
Philosophiæ Naturalis {Principia} Mathematica [or Mathematical {Principles} of Natural Philosophy]