Six not-so-easy pieces : Einstein's relativity, symmetry, and space-time / Richard P. Feynman ; originally prepared for publication by Robert B. Leighton and Matthew Sands ; new introduction by Roger Penrose.

xxvii, 152 p. :, 24 cm.

QC793.3 .S9 F49 1997

Space and time., Special relativity (Physics), Symmetry (Physics)

Reading, MA :: Addison-Wesley, 1997.

Book