Philippe Le Corbeiller

Philippe Emmanuel Le Corbeiller (January 11, 1891 – July 24, 1980) was a French-American electrical engineer, mathematician, physicist, and educator. After a career in France as an expert on the electronics of telecommunications, he became a professor of applied physics and general education at Harvard University. His most important scientific contributions were in the theory and applications of nonlinear systems, including self-oscillators.

Career in France

Son of author and politician Jean-Maurice Le Corbeiller and his wife Marguerite Dreux, Philippe entered the École Polytechnique in 1910, training there in engineering and the mathematical sciences. During World War I he served in the French Signal Corps, earning the croix de guerre and joining the staff of Marshal Ferdinand Foch. After the war, Le Corbeiller worked on telegraphy and radio systems.

In 1926 he completed a doctorate in mathematics from the Sorbonne. His dissertation was on the arithmetic theory of Hermitian forms. Written under the supervision of Charles Émile Picard, Le Corbeiller's dissertation built upon the work of the then recently deceased Georges Humbert. From 1929 to 1939, Le Corbeiller served in the French ministry of communications (Ministère des Postes, Télégraphes et Téléphones) as a research engineer and taught at the École Supérieure d’Électricité (Supélec). From 1939 to 1941 he was technical and programming director of the French national broadcasting network (Radiodiffusion nationale). Elected fellow of the American Academy of Arts and Sciences, the Acoustical Society of America, and the Econometric Society, Le Corbeiller was also a member of the American Physical Society and the American Association for the Advancement of Science. An important contribution of Le Corbeiller's was to connect the mathematical theory of self-oscillators with the thermodynamics of engines. At Harvard, Le Corbeiller had a major influence on the work of economic theorist Richard M. Goodwin, who used concepts from nonlinear systems to describe the business cycle in macroeconomics.

Le Corbeiller also cultivated an interest in the history and philosophy of science, which he combined with his enthusiasm for general and adult education. He was actively involved in the initiative of Harvard President James Bryant Conant to develop a history of science–based general science education, collaborating in that effort with other lecturers such as Edwin C. Kemble, Gerald Holton, I. Bernard Cohen, and Thomas Kuhn.

Personal life

Philippe Le Corbeiller married Dorothy Leeming, a citizen of the United States, in Paris in 1924.

After retiring from Harvard in 1960 Philippe Le Corbeiller taught briefly at the New School and at Smith College. Widowed in 1962, he married Pietronetta Posthuma, the widow of Balthasar van der Pol, in 1964 in New York City. The couple settled in the Netherlands in 1968. Le Corbeiller died in Wassenaar in 1980.

Selected works

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