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Siméon Denis Poisson (French: [si.me.ɔ̃ də.ni pwa.sɔ̃]; 21 Juin 1781 – 25 Aprile 1840), wis a French mathematician, geometer, an pheesicist. He obteened mony important results, but within the elite Académie des Sciences he an aa wis the final leadin opponent o the wave theory o licht an wis proven wrang on that matter bi Augustin-Jean Fresnel.

Siméon Poisson
Simeon Poisson.jpg
Siméon Denis Poisson (1781–1840)
Born 21 Juin 1781(1781-06-21)
Pithiviers, Orléanais, Kinrick o Fraunce
(present-day Loiret, Fraunce)
Died 25 Apryle 1840(1840-04-25) (aged 58)
Sceaux, Hauts-de-Seine, Julie Monarchy
Naitionality French
Alma mater École Polytechnique
Kent for Poisson process
Poisson equation
Poisson kernel
Poisson distribution
Poisson bracket
Poisson algebra
Poisson regression
Poisson summation formula
Poisson's spot
Poisson's ratio
Poisson zeros
Conway–Maxwell–Poisson distribution
Euler–Poisson–Darboux equation
Scientific career
Fields Mathematics
Institutions École Polytechnique
Bureau des Longitudes
Faculté des sciences de Paris [fr]
École de Saint-Cyr
Academic advisors Joseph-Louis Lagrange
Pierre-Simon Laplace
Doctoral students Michel Chasles
Joseph Liouville
Ither notable students Nicolas Léonard Sadi Carnot
Peter Gustav Lejeune Dirichlet