See biographies by H. Kragh (1990) and G. Farmelo (2009).
(born Aug. 8, 1902, Bristol, Gloucestershire, Eng.—died Oct. 20, 1984, Tallahassee, Fla., U.S.) English mathematician and theoretical physicist. His first major contribution (1925–26) was a general and logically simple form of quantum mechanics. About the same time, he developed ideas of Enrico Fermi, which led to the Fermi-Dirac statistics. He then applied Albert Einstein's special theory of relativity to the quantum mechanics of the electron and showed that the electron must have spin of
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He fought in the War of the Spanish Succession (1710–1713) and was president of the Finance Council from 1715 to 1718. He distinguished himself in the War of the Polish Succession (1733–1738) and was made a marshal of France in 1734, becoming dean of the marshals in 1748. He served in the War of the Austrian Succession and was appointed to command the French forces in March 1743. He was defeated at the Battle of Dettingen in June 1743, but successfully drove the Austrians out of Alsace-Lorraine the following year, although he missed an opportunity to seriously damage the Austrian army as it was crossing the Rhine. He was Foreign Minister from April to November 1744, and regarded Great Britain as a greater enemy of France than Austria. He later acted in a diplomatic capacity and had substantial influence over the course of foreign policy.
In 1698, as comte d'Ayen, he married Françoise Charlotte Amable d'Aubigny, niece and beneficiary of the marquise de Maintenon, and by her had six children, 4 daughters and 2 sons.
His two sons Louis, 4th duc de Noailles, and Philippe, duc de Mouchy, also went on to become marshals of France.