There is an ill concealed skeleton in the closet of physics As they are currently formulated, general relativity and quantum mechanics cannot both be right Each is exceedingly accurate in its field general relativity explains the behavior of the universe at large scales, while quantum mechanics describes the behavior of subatomic particles Yet the theories collide horribly under extreme conditions such as black holes or times close to the big bang Brian Greene, a specialist in quantum field theory, believes that the two pillars of physics can be reconciled in superstring theory, a theory of everything Superstring theory has been called a part of st century physics that fell by chance into the th century In other words, it isn t all worked out yet Despite the uncertainties string theorists work to find approximate solutions to approximate equations Greene gives a tour of string theory solid enough to satisfy the scientifically literate Though Ed Witten of the Institute for Advanced Study is in many ways the human hero of The Elegant Universe, it is not a human side of physics story Greene s focus throughout is the science, and he gives the nonspecialist at least an illusion of understanding or the sense of knowing what it is that you don t know And that is traditionally the first step on the road to knowledge Mary Ellen CurtinOne of thecompelling scientific cum theological questions in the Middle Ages was How many angels can dance on the head of a pin Today s version in cutting edge science is, How many strings As posited by s tring theory physics, strings are furiously vibrating loops of stuff The concept of strings was devised to help scientists describe simultaneously both energy and matter The frequency and resonance of strings vibration, just like those of strings on an instrument, determine charge, spin and other familiar properties of energy and eventually the structure of the universe a true music of the spheres There s a chance that strings are themselves made up of something still smaller But scientists can prove their existence only on the blackboard and computer, because they are much too tiny a hundred billion billion times smaller than the nucleus of an atom to be observed experimentally Brian Greene, professor of physics and mathematics at Cornell and Columbia universities, makes the terribly complex theory of strings accessible to all He possesses a remarkable gift for using the everyday to illustrate what may be going on in dimensions beyond our feeble human perception Just when we might be tempted to dismiss strings as grist for the publish or perish mill, Greene explains how they have demonstrated connections between mathematics and physics that have helped solve age old conundrums in each field This book will appeal to astronomy as well as math and physics fans because it probes the important insights string theory gives into hotly debated issues in cosmology Later chapters require careful attention to Greene s explications, but the effort will prepare readers to follow the scientific advances likely to be made in the next millennium through application of string theory Author tour CopyrightReed Business Information, Inc