Critical Problems In Physics

The past century has seen fantastic advances in physics, from the discovery of the electron, x-rays and radioactivity, to the era of incredible solid state devices, computers, quarks and leptons, and the standard model. We are on the threshold of an even more exciting new era in which breakthroughs in a startling variety of directions will produce significant changes in our understanding of the natural world. In this book, a group of eminent scientists define and elaborate on these new directions.