This book on the structure and role of time in physical theories addresses itself to scientists and philosophers intereste:'i in the 'no man's lard' between science and philosophy, in particular between physics and philoso- phy. The p:lint of departure is physical time, Le. time as usErl 1:[yen] physicists in their theories; but the analysis is not oonfined to a purely physical level but caries the problem into the domain of philosophical in- quiry. Altoough the book presupp:lses some knowledge of physics, I have avoided, wherever p:lssible, the use of advanced mathematics and technical...