Siméon Denis Poisson

Siméon Denis Poisson (French: [si.me.ɔ̃ də.ni pwa.sɔ̃]; 21 June 1781 25 April 1840), was a French mathematician, geometer, and physicist. He obtained many important results, but within the elite Académie des Sciences he also was the final leading opponent of the wave theory of light and was proven wrong on that matter by Augustin-Jean Fresnel.

Biography

Poisson was born in Pithiviers, Loiret, the son of soldier Siméon Poisson.

In 1798, he entered the École Polytechnique in Paris as first in his year, and immediately began to attract the notice of the professors of the school, who left him free to make his own decisions as to what he would study. In 1800, less than two years after his entry, he published two memoirs, one on Étienne Bézout's method of elimination, the other on the number of integrals of a finite difference equation. The latter was examined by Sylvestre-François Lacroix and Adrien-Marie Legendre, who recommended that it should be published in the Recueil des savants étrangers, an unprecedented honour for a youth of eighteen. This success at once procured entry for Poisson into scientific circles. Joseph Louis Lagrange, whose lectures on the theory of functions he attended at the École Polytechnique, recognized his talent early on, and became his friend (the Mathematics Genealogy Project lists Lagrange as his advisor, but this may be an approximation); while Pierre-Simon Laplace, in whose footsteps Poisson followed, regarded him almost as his son. The rest of his career, till his death in Sceaux near Paris, was nearly occupied by the composition and publication of his many works and in fulfilling the duties of the numerous educational positions to which he was successively appointed.

Poisson (crater)

Poisson is a lunar crater that is located in the southern highlands of the Moon's near side. It lies to the east of the crater Aliacensis and northwest of Gemma Frisius. To the northwest of Poisson is Apianus.

This heavily eroded crater shares a common floor with the satellite crater Poisson T to the west-southwest, and the two craters have more or less merged into a single formation with a narrower neck in between. The rim of Poisson is heavily eroded, and is overlain by several craters. Poisson U is intruding into the southern rim at the junction of Poisson and Poisson T. A low-walled formation is joined to the northern rim at the opposite side of the neck from Poisson U.

The interior floor of Poisson and Poisson T has been resurfaced by basaltic lava, leaving a level surface within the inner walls. A pair of old, worn craters lies along the inner wall in the southeast part of the crater.

Satellite craters

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Poisson.

Poisson (disambiguation)

Poisson (meaning fish in French) may refer to:

  • Abel-François Poisson, marquis de Marigny (1727–1781), a French nobleman who served as the director general of the King's Buildings
  • Jeanne-Antoinette Poisson, madame de Pompadour (1721–1764), a member of the French court and the official chief mistress of Louis XV from 1745 to her death
  • Siméon Denis Poisson (1781–1840), a French mathematician, geometer, and physicist
  • Poisson crater, a lunar crater named after Siméon Denis Poisson
  • Poisson distribution, a discrete probability distribution named after Siméon Denis Poisson
  • Poisson, Saône-et-Loire, a commune of the Saône-et-Loire département, in France
  • Poissons, a commune in the Haute-Marne département, in France
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    Poisson en Papillote (Steamed Fish Parcels) with Garlic Bread

    TimesDaily 24 Apr 2025
    Here’s a simple way to make fish that is always juicy and flavorful. I cook the fish in a parcel, allowing it to steam with herbs and vegetables which flavor the fish. The parcels can be served directly at the ... .
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    Quick Fix: Poisson en Papillote (Steamed Fish Parcels) with Garlic Bread

    Denver Post 17 Apr 2025
    By Linda Gassenheimer, Tribune News Service. Here’s a simple way to make fish that is always juicy and flavorful ... HELPFUL HINTS. ... olive oil, butter, garlic, onion, salt and black peppercorns Poisson en Papillote (Steamed Fish Parcels) with Garlic Bread.
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    How Le Poisson Steve, an Orange Fish With Arms and Legs, Became a TikTok Star

    New York Times 14 Apr 2025
    How Steve, a French cartoon with a catchy theme song, became a TikTok star ... .
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    Poisson en Papillote (steamed fish parcels) juicy and flavorable

    The Keene Sentinel 11 Apr 2025
    Here’s a simple way to make fish that is always juicy and flavorful. I cook the fish in a parcel, allowing it to steam with herbs and vegetables which flavor the fish. The parcels can be served directly at the ... .
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    ‘Babe wake up a new vocal stim just dropped’: How Le Poisson Steve, the surreal ...

    The Daily Dot 10 Apr 2025
    Le poisson Steve, or Steve the Fish in English, is TikTok’s latest viral sensation ... @vigzvigz steve le poisson steve musique par @tomo ♬ STEVE tomomp3 - vigz ... @leo.ako LE POISSON STEVE PART.
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