It has been more than forty years since Richard Feynman taught the introductory physics courses that led to the creation of these three volumes known as "The Feynman Lectures on Physics." In these forty years, our understanding of the physical world has changed significantly, but nonetheless, the "Feynman Lectures" continue to stand the test of time. Today, these lectures are as powerful as they were when first published; this is due to Feynman's unique physical insight as well as his teaching and pedagogical experience. The Lectures have become a subject of study worldwide by physicists, both those at the beginning of their careers and those who are already established in their field. They have been translated into at least 15 languages and more than 1.5 million copies have been printed in the English language alone. Probably no other set of books has had such an impact for such a long period of time.
This present final edition of the Feynman Lectures on Physics differs from all previous editions in two respects: in this edition, all known errors to date have been corrected, and additionally, a new, fourth volume has been attached, titled: "Feynman's Tips on Physics: A Problem-Solving Supplement to the Feynman Lectures on Physics." This supplement contains additional material from Feynman's courses: three lectures on problem-solving and one on inertial navigation, as well as solved exercises and their answers, edited by Feynman's collaborators, Robert B. Leighton and Rochus Vogt.

Kip S. Thorne