Martin Jähnert

Postdoctoral Fellow (Jun 2020-Dez 2020)

PhD, Technische Universität Berlin, Berliner Zentrum für Wissensgeschichte

In his PhD project Martin Jähnert studies the development of the correspondence principle in the old quantum theory as a process of adaptive reformulation. By looking at different uses of the principle the project aims to understand how physicists came to work with the principle and how the principle was shaped through its applications. The project studies this process of adaptive reformulation in the context of the dispersion of the correspondence principle throughout the networks of the old quantum theory and its simultaneous transfer into different fields of research  (e.g. atomic and molecular spectroscopy, dispersion, and collision processes). Thereby Jähnert shows how the principle became one of the most fruitful research tools of the old quantum theory.

In previous work with Christoph Lehner, Martin Jähnert has studied the early debates on the interpretation of quantum mechanics and its interplay with the development of the theory. From this perspective, the interpretational debate was understood as a reflection on the role of pictures and models within the research process. Their work aimed to clarify how physicists dealt with the methodological and epistemological challenges arising from the development of quantum mechanics.


History and Foundations of Quantum Field Theory


No projects were found for this scholar.

Selected Publications

Jähnert, M. (2019). Practicing the Correspondence Principle in the Old Quantum Theory: A Transformation through Implementation. Cham: Springer. doi:10.1007/978-3-030-13300-9.

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Blum, A. S., Jähnert, M., Lehner, C., & Renn, J. (2017). Translation as heuristics: Heisenberg’s turn to matrix mechanics. Studies in History and Philosophy of Science. Part B, Studies in History and Philosophy of Modern Physics, 60, 3-22. doi…

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Jähnert, M. (2015). Practising the correspondence principle in the old quantum theory: Franck, Hund and the Ramsauer effect. In F. Aaserud, & H. Kragh (Eds.), One hundred years of the Bohr atom: proceedings from a conference (pp. 200-216)…

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Jähnert, M. (2012). 'Revisiting the 1927 Solvay conference and the early interpretation of quantum mechanics'. Essay review of Bacciagaluppi, Guido and Antony Valentini: Quantum theory at the crossroads: reconsidering the 1927 Solvay conference…

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Presentations, Talks, & Teaching Activities

100 years of the Bohr atom, Copenhagen

The Correspondence Principle in Practice: Its Use and Dispersion in the Old Quantum Theory

Spring meeting of the Deutsche Physikalische Gesellschaft (DPG) - "Wissenstransfer in der Geschichte der Physik", Jena

Transferring and Practicing the Correspondence Principle in the Old Quantum Theory: Friedrich Hund and the Ramsauer effect

AIP-Washington: Continuity and Discontinuity in the Physical Sciences Since the Enlightenment: A Conference for Graduate Students and Early-Career Scholars

From Continuity to Discontinuity: The Correspondence Principle and the Transformation of Mechanics

Workshop of the Deutsche Physikalische Gesellschaft, “Heuristics in Physics”, Bad Honnef

Pictures and Principles. Heuristics in the Early Interpretational Debate on Quantum Mechanics

Annual meeting of the Germany Society for the History of Medicine, Sciences, and Technology (DGMNT), Hanover

Kopenhagener Deutung und dialektischer Materialismus