How Physics Confronts Reality

Download or read book How Physics Confronts Reality written by Roger G Newton and published by World Scientific. This book was released on 2009-07-28 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.Contents: Some Quantum HistoryRules and InterpretationsEinstein's DefectionFrom Atomism to Real ParticlesLaws of MotionFieldsNew Particles and Their Quantum OriginsAtoms, Inside and OutMethods and Underpinnings Readership: Academics and students in physics and the general public.