Quantum Dialogue: The Making of a Revolution (review)

Quantum Dialogue: The Making of a Revolution. Mara Beller. Chicago: U of Chicago P, 1999. Pp. xv + 365. $35.00 cloth.

This book presents a critical discussion of the development of quantum physics in the early part of the second quarter of the twentieth century. The opening statement of the first chapter, a quotation attributed to Werner Heisenberg--"Science is rooted in conversations"--sets the tone for the whole book.

The book is divided into two parts: "Dialogical Emergence" and "Rhetorical Consolidation." An introductory chapter, "Novelty and Dogma," outlines what is new for quantum theory as compared with what is already accepted in physics. Another six chapters build upon the various relationships between the people and ideas that led ultimately to the acceptance of a number of principles to explain a large variety of physical phenomena at the atomic level. The next six chapters generally show how a vocal group of scientists put forward the "Copenhagen Interpretation"; these scientists used the rhetorical skills of Niels Bohr and often unjustly criticized other views significant to the development of quantum mechanics. The final two chapters relate to later philosophical and historical implications of the development of quantum theory as discussed by the scientists themselves, as well as philosophers and historians of science, including the author.

Mara Beller carries out a rather unique discussion of the scientific ideas and the social relationships among the scientists. She has carefully studied many of the original letters between the leading scientists at the time--Niels Bohr, Max Born, Paul Dirac, Albert Einstein, Werner Heisenberg, Wolfgang Pauli, Erwin Schrodinger--and numerous others who were not so well known. In particular, she discusses how these scientists influenced each other. A prime example is carefully developed in the early chapters of the book, where Beller discusses Heisenberg's work on matrix mechanics. After Heisenberg learned of Schrodinger's wave mechanics, he strongly denied the use of this rival method. As a result of discussions with Bohr, Pauli, and others, however, many elements of wave mechanics began to appear in matrix mechanics in somewhat hidden forms. As quantum theory evolved in the following years, aspects of both wave mechanics and matrix mechanics came together in complementarity, due largely to the influence of Bohr. Yet, Beller questions, in the second part of the book, whether much of the process of assimilation by Bohr was one sided, so that the Copenhagen interpretation always came out the stronger.

This book has scientific merit for both students and professionals in the physical sciences. During the intervening three quarters of a century since the founding years of quantum mechanics, many fundamental ideas have come to be accepted as basic concepts in chemistry, physics, material science, and related fields in engineering. In fact, the acceptance of the usefulness of quantum mechanics is so strong that many of ideas are seen as an integral part of the field itself, to the point that the proceeding concepts in early quantum theory are often neglected. This situation is rather unfortunate. It arises in part from the contemporary educational system, in which only the most immediate examples relevant to a particular field are used. The discussions in this book bring forward a completely different side of the development of quantum theory, which in many ways continues right up to the present. Here, the philosophical and social sides are stressed over the practical applications. Above and beyond this strength, the presentation could be understood by many people outside the physical sciences even though many of the scientific objectives may not be so very apparent. Quantum Dialogue is recommended to all readers who have an interest in the issues that arose during the early years of quantum theory's development.

David E. Miller
Department of Physics
The Pennsylvania State University

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