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Pierre-Simon, marquis de Laplace
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Portrait of Pierre Simon Marquis de Laplace wearing formal attire with a sash and star-shaped medal, looking slightly to his left.
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Portrait of Pierre Simon Marquis de Laplace wearing formal attire with a sash and star-shaped medal, looking slightly to his left.
Laplace, Pierre-Simon, marquis de Pierre-Simon, marquis de Laplace.

Pierre-Simon, marquis de Laplace

French scientist and mathematician
Also known as: Pierre-Simon, comte de Laplace
Written by
Gerald James Whitrow
Emeritus Professor of the History and Applications of Mathematics, Imperial College of Science and Technology, University of London. Author of The Natural Philosophy of Time and others.
Gerald James Whitrow
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Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
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Pierre-Simon, marquis de Laplace (born March 23, 1749, Beaumount-en-Auge, Normandy, France—died March 5, 1827, Paris) was a French mathematician, astronomer, and physicist who was best known for his investigations into the stability of the solar system. Laplace successfully accounted for all the observed deviations of the planets from their theoretical orbits by applying Sir Isaac Newton’s theory of gravitation to the solar system, and he developed a conceptual view of evolutionary change in the structure...

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