Writing for non-scientists, Newton (Indiana U.) explains how Albert Einstein and Neils Bohr, after initiating quantum theory together, parted ways over whether a theory that described not reality itself but only a probability of reality was sufficient. Einstein said no, that more theoretical research was needed; Bohr said yes, and started working on applications. He traces the history of quantum mechanics, the main points of its interpretation, Einstein's objections to it, and the responses engendered by his arguments. Two central aspects of physics serve as examples: its elucidation of the basic structure of the world made up of particles; and the explanation and prediction of how objects move. Annotation ©2011 Book News, Inc., Portland, OR (booknews.com)
This book recalls, for nonscientific readers, the history of quantum mechanics, the main points of its interpretation, and Einstein's objections to it, together with the responses engendered by his arguments. Most popular discussions on the strange aspects of quantum mechanics ignore the fundamental fact that Einstein was correct in his insistence that the theory does not directly describe reality. While that fact does not remove the theory's counterintuitive features, it casts them in a different light. Context is provided by following the history of two central aspects of physics: the elucidation of the basic structure of the world made up of particles, and the explanation, as well as the prediction, of how objects move. This history, prior to quantum mechanics, reveals that whereas theories and discoveries concerning the structure of nature became increasingly realistic, the laws of motion, even as they became more powerful, became more and more abstract and remote from intuitive notions of reality. Newton's laws of motion gained their abstract power by sacrificing direct and intuitive contact with real experience. Arriving 250 years after Newton, the break with a direct description of reality embodied in quantum mechanics was nevertheless profound.
