French physicist (1892-1987) known for his theory that matter has the properties of both particles and waves, who was awarded the 1929 Nobel Prize in Physics. TLS in French, three pages on two adjoining sheets, 8.25 x 10.5, Institut de France letterhead, January 4, 1965. Untranslated letter to Madame Gustave Ribaud, concerning the establishment of a prize in the memory of her late husband, the physicist Gustave Ribaud. Signed at the conclusion by Louis de Broglie and Robert Courrier. In fine condition.
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