Philosophiae+Naturalis+Principia+Mathematica

1) De Motu corporum (on the motion of bodies)    This book was more mathematical. It demonstrated proofs and propositions that can be solved by calculus.  2) The first book was divided into two because of its length. It contains results of experimental tests such as motion through a resistive medium, as well as other that are similar. ** **3) The third book, De mundi systemate (on the system of the world), applies many of his theories to the solar system (i.e.: apple falling from the tree, woohoo! Gravity!). It talks about the regular and irregular orbits of the moon as well as moons orbiting other planets.**
 * [[image:the_book.png align="left"]]The Principia consisted of three books,


 * For more information go to**
 * http://en.wikipedia.org/wiki/Philosophiae_Naturalis_Principia_Mathematica**