Caltech’s Division of Physics, Mathematics and Astronomy
and The Feynman Lectures Website
are pleased to present this online edition of
Feynman • Leighton • Sands
 
Now, anyone with internet access and a web
browser can enjoy reading2
a high quality up-to-date copy of Feynman’s legendary lectures.
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.3
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 (left) and Matthew Sands (right) in background, April 29, 1963.
Photographs by Tom Harvey. Copyright © California Institute
