French physicist (1870-1942) whose studies of the Brownian motion of particles suspended in liquids confirmed the atomic nature of matter; for this, he was awarded the 1926 Nobel Prize in Physics. Rare TLS in French, signed “Jean Perrin,” one page, 8.25 x 10.5, Ministere de l'Education Nationale letterhead, June 29, 1938. Untranslated letter regarding an application to the Centre National des Recherches Scientifiques. In fine condition, with some faint toning.
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