Relativity: The Special and the General Theory (Penguin Classics) by Albert Einstein
English | July 25, 2006 | ISBN: 0143039822 | 160 Pages | PDF | 1 MB
According to Einstein himself, this book is intended "to give an exact insight into the theory of Relativity to those readers who, from a general scientific and philosophical point of view, are interested in the theory, but who are not conversant with the mathematical apparatus of theoretical physics.