Six not-so-easy pieces : Einstein's relativity, symmetry, and space-time / Richard P. Feynman, with Robert B. Leighton and Matthew Sands ; introduction by Roger Penrose.
" ... In the challenging 'Six Not-So-Easy Pieces', Feynman delves into one of the most revolutionary discoveries in twentieth-century physics: Einstein's Theory of Relativity ..."--Page 4 of cover.
Saved in: