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Poisson, Siméon Denis (1781–1840)

Simeon Poisson
French mathematician whose main interest lay in the application of mathematics to physics, especially in electrostatics and magnetism. He developed a two-fluid theory of electricity and provided theoretical support for the experimental results of others, notably Charles de Coulomb. Poisson also made important contributions to mechanics, especially the theory of elasticity; to optics; to the calculus, especially definite integrals; to differential geometry; and to probability theory. In all he wrote more than 300 papers on mathematics, physics, and astronomy, and his Traité de mécanique (1811) was long a standard work.

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