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CO-PUBLISHED WITH IMPERIAL COLLEGE PRESS eBooks

Crisis, Measurement Problems and Controversy in Early Quantum Electrodynamics: The Failed Appropriation of Epistemology in the Second Quantum Generation

Anja Skaar Jacobsen

Published May 1, 2011• 14 citations
Publisher
DOI
10.1142/9789814293129_0014

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Abstract Although much has been written about the measurement problem, there is still significant disagreement about what the problem really is and what a solution should look like. In this chapter I present a brief introduction to quantum mechanics and the measurement problem, and then I argue that the measurement problem should be understood in part a problem of epistemology: solving the problem requires telling a consistent story about how the reality underlying quantum mechanics could allow us to reliably come to know about that reality via the medium of our empirical evidence for quantum mechanics, and an interpretation of quantum mechanics which fails to achieve this is self-undermining.

•Jun 12, 2025•0 citations
Failed attempts to understand the anomalous Zeeman effect contributed to the feeling of crisis that by 1924 characterized parts of the physics community. The solution proposed by W. Heisenberg’s ‘core model’ only raised other problems. Another indication was the state of radiation theory and the uncertain relationship between wave theory and the light quantum, a problem that resulted in the controversial BKS (Bohr–Kramers–Slater) theory of 1924. In the wake of this theory, H. Kramers and Heisenberg constructed a formal theory of dispersion that did not rely on electron orbits but only on observable quantities, in agreement with the ‘quantum mechanics’ programme of M. Born. The development culminated with Heisenberg’s paper of August 1925, which marks the end of the Bohr model and the beginning of quantum mechanics. The chapter reconsiders the crisis and the reasons for it, in particular the role of experimental anomalies.
Abstract Although much has been written about the measurement problem, there is still significant disagreement about what the problem really is and what a solution should look like. In this chapter I present a brief introduction to quantum mechanics and the measurement problem, and then I argue that the measurement problem should be understood in part a problem of epistemology: solving the problem requires telling a consistent story about how the reality underlying quantum mechanics could allow us to reliably come to know about that reality via the medium of our empirical evidence for quantum mechanics, and an interpretation of quantum mechanics which fails to achieve this is self-undermining.