Walther Meissner

Walther Meissner
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Name	Walther Meissner
Birth date	16 October 1882
Birth place	Berlin, German Empire
Death date	11 November 1974
Death place	Munich, West Germany
Nationality	German
Fields	Physics
Known for	Meissner effect
Alma mater	Technical University of Munich
Awards	Schleich Medal, honorary memberships

Walther Meissner Walther Meissner was a German experimental physicist noted for his discovery of the Meissner effect in superconductivity and for long-standing contributions to cryogenics, low-temperature physics, and precision instrumentation. His work at institutions such as the Physikalisch-Technische Reichsanstalt, the Technical University of Munich, and the Bavarian Academy of Sciences and Humanities intersected with contemporaries in solid-state physics, quantum theory, and applied electrical engineering. Meissner’s research influenced later developments in superconductivity, MRI precursor technologies, and cryogenic engineering used by laboratories and industrial firms including Siemens and Bayerische Motoren Werke.

Early life and education

Meissner was born in Berlin and grew up during the era of the German Empire and the reign of Kaiser Wilhelm II. He studied physics and electrical engineering at the Technical University of Munich and completed doctoral work under advisers connected to the network of the Kaiser Wilhelm Society and the Physikalisch-Technische Reichsanstalt (PTR). During his formative years he encountered the experimental traditions of figures such as Heinrich Hertz, Max Planck, and Walther Nernst, and he was contemporaneous with students and researchers affiliated with institutions like the University of Göttingen, the University of Berlin, and the University of Munich. Meissner’s education placed him in contact with advances in cryogenics pioneered by Heike Kamerlingh Onnes and instrumentation developments fostered by Ernst Ruska and Felix Bloch.

Career and research

Meissner joined the Physikalisch-Technische Reichsanstalt where he developed apparatus and techniques for low-temperature experimentation and precision measurement. At PTR he collaborated with scientists in experimental thermodynamics and electromagnetism and worked on vapor pressure thermometry and evacuated cryostats used by laboratories such as the Cavendish Laboratory and the Low Temperature Laboratory, Leiden. His career spanned the volatile periods of the Weimar Republic, the Nazi Party era, and post‑war reconstruction in West Germany, during which he supervised instrument-building workshops and fostered ties to industrial laboratories like Siemens-Schuckert and research institutes including the Max Planck Society. Meissner published on topics ranging from magnetic measurements to refrigeration cycles employed in liquefaction of gases studied by the Royal Society and laboratories across Europe.

Discovery of the Meissner effect

In 1933 Meissner, together with his colleague Robert Ochsenfeld at the PTR, reported the expulsion of magnetic flux from superconducting materials cooled below a critical temperature, a phenomenon now known as the Meissner effect. The discovery was contemporaneous with theoretical advances by Werner Heisenberg, Felix Bloch, and experimental work by Heike Kamerlingh Onnes on zero resistivity in mercury and other elements. The Meissner–Ochsenfeld experiments influenced subsequent theoretical formulations by Fritz London, Heinz London, and later microscopic explanations by John Bardeen, Leon Cooper, and John Robert Schrieffer in the BCS theory. The demonstration of magnetic field exclusion informed practical developments in magnetic levitation experiments such as those pursued at MIT, CERN, and industrial research groups focused on cryogenic magnetic shielding and persistent current circuits.

Academic positions and institutions

Meissner held leadership roles at the Physikalisch-Technische Reichsanstalt and later at the Technical University of Munich where he mentored students and directed laboratories. He maintained collaborations with academic centers including the University of Göttingen, the University of Leipzig, and the University of Vienna, and he engaged with professional organizations such as the Deutsche Physikalische Gesellschaft and international bodies like the International Union of Pure and Applied Physics. During his tenure he oversaw the design of low-temperature laboratories and cooperated with national metrology institutes in Europe and North America including the National Physical Laboratory and the Physikalisch-Technische Bundesanstalt successor organizations. Meissner’s institutional leadership helped rebuild experimental infrastructure in Munich after World War II and linked German cryogenic research to programs at the Imperial College London and the California Institute of Technology.

Honors and awards

Meissner received recognition from scientific academies and societies, earning medals and honorary memberships from organizations including the Bavarian Academy of Sciences and Humanities, the Deutsche Physikalische Gesellschaft, and several technical universities. His name has been commemorated in lecture series, laboratory names, and awards in cryogenics and low-temperature physics alongside honors historically awarded to figures like Max Planck, Heike Kamerlingh Onnes, and Walther Nernst. Institutions such as the Technical University of Munich and the Max Planck Society have preserved archival material and oral histories documenting his contributions, and his legacy endures in modern superconductivity research programs at centers including Stanford University, Harvard University, and ETH Zurich.

Category:German physicists Category:Superconductivity Category:1882 births Category:1974 deaths