a magnificently printed short account of days with Feynman, furnish thorough observations on the lecture itself, and connect the thrilling history of their attempt to go after one of most brilliant and innovative lecture of Feynman.
According to Feynman, “simple things have simple explanations.” In his lecture one of the simple object that was in his intelligence was the “Kepler’s First Law,” that is the Law of ellipses. In his derivation, he first he presents the shape of ellipse is an elongated circle which can be easily drawn by using the string, pencil and 2 paths (Goodstein & Judith: 64).
The above is the Feynman diagram which he uses to derive the Kepler’s First Law. In this diagram he shows the velocity vector of planets and shows their movement direction around sun (Goodstein & Judith: 84). He divides the path of planets in small segments and proves that the angles made by these segments are equal (Goodstein & Judith: 160).
Feynman in this book provides wonderful knowledge and also explains the Kepler’s First law which is also known as Law of ellipse. In this derivation he begins with the simple example of ellipse and expands his idea in order to explain the orbit of the planet. For this purpose he considers small segments and velocity and prove that the angles made by all of these segments are