Reichenbach, Hans - Atom and Cosmos: The World of Modern Physics

The account of modern physics given in this book is an outgrowth of lectures which the author broadcast in Berlin during the winter of 1929-30. These addresses had the aim of presenting physical knowledge to nonphysicists; and since these non-specialists showed great interest in problems of physics, the author felt himself justified in satisfying the numerous requests for a written version of the lectures.