The concept of mass is one of the most fundamental notions in physics, comparable in importance only to those of space and time. But in contrast to the latter, which are the subject of innumerable physical and philosophical studies, the concept of mass has been but rarely investigated. Here Max Jammer, a leading philosopher and historian of physics, provides a concise but comprehensive, coherent, and self-contained study of the concept of mass as it is defined, interpreted, and applied in contemporary physics and as it is critically examined in the modern philosophy of science. With its focus on theories proposed after the mid-1950s, the book is the first of its kind, covering the most recent experimental and theoretical investigations into the nature of mass and its role in modern physics, from the realm of elementary particles to the cosmology of galaxies.
The book begins with an analysis of the persistent difficulties of defining inertial mass in a noncircular manner and discusses the related question of whether mass is an observational or a theoretical concept. It then studies the notion of mass in special relativity and the delicate problem of whether the relativistic rest mass is the only legitimate notion of mass and whether it is identical with the classical (Newtonian) mass. This is followed by a critical analysis of the different derivations of the famous mass-energy relationship E = mc2 and its conflicting interpretations. Jammer then devotes a chapter to the distinction between inertial and gravitational mass and to the various versions of the so-called equivalence principle with which Newton initiated his Principia but which also became the starting point of Einstein's general relativity, which supersedes Newtonian physics. The book concludes with a presentation of recently proposed global and local dynamical theories of the origin and nature of mass.
Destined to become a much-consulted reference for philosophers and physicists, this book is also written for the nonprofessional general reader interested in the foundations of physics.
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"Concepts of Mass in Contemporary Physics and Philosophy addresses an important issue, covering a large swathe of territory and presenting technical results in clear and accessible way. There is no comparable study of mass in the field, and the need for a synoptic review is obvious. Philosophers and historians of science, who often lack the technical expertise to evaluate the work of physicists, will find the book very useful. Physicists, too, will value the book, particularly because it brings together results that are widely dispersed in the literature."--Tim Maudlin, Rutgers University
"Professor Max Jammer's book is a significant and important contribution to the conceptual foundations of physics, especially in the manner in which it explores how the concept of mass occurs in the context of gravitational and space-time theories."--Ronald Anderson, Boston College
Max Jammer, born in Berlin, Germany, is Research Professor of Physics at Bar-Ilan University, where he was formerly President and Rector. His books, translated into many languages, include Concepts of Space (with a foreword by Albert Einstein), The Conceptual Development of Quantum Mechanics, The Philosophy of Quantum Mechanics, and, most recently, Einstein and Religion (Princeton). Among the awards he has received are the Israel Prize and the Monograph Prize of the American Academy of Arts and Sciences.
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