The Feynman Lectures on Physics

Feynman • Leighton • Sands

Caltech and The Feynman Lectures Website are pleased to present this online edition of The Feynman Lectures on Physics. Now, anyone with internet access and a web browser can enjoy reading a high quality up-to-date copy of Feynman's legendary lectures.

However, we want to be clear that this edition is only free to read online, and this posting does not transfer any right to download all or any portion of The Feynman Lectures on Physics for any purpose.

This edition has been designed for ease of reading on devices of any size or shape; text, figures and equations can all be zoomed without degradation.1

Volume I

mainly mechanics, radiation and heat

Volume II

mainly electromagnetism and matter

Volume III

quantum mechanics

For comments or questions about this edition please contact Michael Gottlieb.

 

Richard Feynman talking with a teaching assistant after the lecture on The Dependence of Amplitudes on Time, Robert Leighton and Matthew Sands in background, April 29, 1963.

Photograph by Tom Harvey. Copyright © California Institute of Technology.

 


Contributions from many parties have enabled and benefitted the creation of the HTML edition of The Feynman Lectures on Physics. We wish to thank

  1. This HTML5-based edition features LaTeX equations rendered by MathJax JavaScript, and scalable vector graphic (SVG) figures. Your browser must support javascript and permit scripts from mathjax.org. LocalStorage must be enabled. We recommend using a modern browser; some older browsers may not display this edition correctly. PNG figures (that degrade when scaled) may be served to browsers that do not support SVG. We do not support versions of Internet Explorer older than 8.0. For information about MathJax features and accessibility options, please visit the MathJax User Help page.

 

Copyright © 1963, 2006, 2013 by the California Institute of Technology,
Michael A. Gottlieb, and Rudolf Pfeiffer