Léon Rosenfeld (French: [ʁɔzɛnfɛld]; 14 August 1904 in Charleroi – 23 March 1974[1]) was a Belgian physicist and Marxist.
Rosenfeld was born into a secular Jewish family. He was a polyglot who knew eight or nine languages and was fluent in at least five of them.[2]
Rosenfeld obtained a PhD at the University of Liège in 1926, and he was a close collaborator of the physicist Niels Bohr. He did early work in quantum electrodynamics that predates by two decades the work by Dirac and Bergmann.[3] Rosenfeld contributed to a wide range of physics fields, from statistical physics and quantum field theory to astrophysics.[2] Along with Frederik Belinfante, he derived the Belinfante-Rosenfeld stress-energy tensor. He also founded the journal Nuclear Physics and coined the term lepton.[4]
In 1933, Rosenfeld married Dr. Yvonne Cambresier, who was one of the first women to obtain a Physics Ph.D from a European university. They had a daughter, Andrée Rosenfeld (1934–2008) and a son, Jean Rosenfeld.
Reference: https://en.wikipedia.org/wiki/L%C3%A9on_Rosenfeld
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