Gustav Magnus und seine Berliner Physiker-Schule

“Gustav Magnus and His Berlin School of Physicists” by Horst Kant (German language).—Horst Kant examines Gustav Magnus’s “Berlin school of physicists” as an informal yet remarkably influential circle of younger scientists that took shape from the 1830s onward around Magnus’s teaching, his house at Am Kupfergraben 7, his private laboratory, and the physics colloquium he launched in 1843. Drawing on contemporary assessments by Wilhelm Ostwald, Gustav Wiedemann, and Adolf Harnack, as well as on historical concepts of the “scientific school,” the essay asks whether, and in what sense, one may speak of a Magnus school. In the strict terms of the theory and sociology of science, the circle does not meet every criterion; historically and in ordinary usage, however, the term is persuasive, because Magnus established a research and teaching culture centered on experiment, gave students access to instruments, laboratory space, his library, and expert guidance, and at the same time encouraged them to work independently. On the basis of lists of students, publication figures, and later institutional appointments, Kant shows how the focus of work in Magnus’s laboratory shifted from chemistry to physics and how widely the influence of this circle extended—from Hermann von Helmholtz, Gustav Kirchhoff, Rudolph Clausius, Gustav Wiedemann, August Kundt, and Emil Warburg to Werner von Siemens and the Physikalisch-Technische Reichsanstalt. At the same time, the essay qualifies the image of Magnus as an experimenter indifferent to theory: although he favored experimental talent and remained skeptical of speculative Naturphilosophie, he also supported researchers who would become foundational figures in theoretical physics. The Magnus school thus emerges as a central force in the institutionalization, professionalization, and experimental orientation of physics in Berlin and Germany in the nineteenth century.