Poisson law

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• Poisson's ratio — ( ν ), named after Simeon Poisson, is the ratio of the relative contraction strain, or transverse strain (normal to the applied load), divided by the relative extension strain, or axial strain (in the direction of the applied load).When a sample… …   Wikipedia

• Poisson's equation — In mathematics, Poisson s equation is a partial differential equation with broad utility in electrostatics, mechanical engineering and theoretical physics. It is named after the French mathematician, geometer and physicist Siméon Denis Poisson.… …   Wikipedia

• Poisson bracket — In mathematics and classical mechanics, the Poisson bracket is an important operator in Hamiltonian mechanics, playing a central role in the definition of the time evolution of a dynamical system in the Hamiltonian formulation. In a more general… …   Wikipedia

• Law of total cumulance — In probability theory and mathematical statistics, the law of total cumulance is a generalization to cumulants of the law of total probability, the law of total expectation, and the law of total variance. It has applications in the analysis of… …   Wikipedia

• Poisson algebra — In mathematics, a Poisson algebra is an associative algebra together with a Lie bracket that also satisfies Leibniz law; that is, the bracket is also a derivation. Poisson algebras appear naturally in Hamiltonian mechanics, and are also central… …   Wikipedia

• Law of large numbers — The law of large numbers (LLN) is a theorem in probability that describes the long term stability of the mean of a random variable. Given a random variable with a finite expected value, if its values are repeatedly sampled, as the number of these …   Wikipedia

• Poisson, Siméon-Denis — ▪ French mathematician born June 21, 1781, Pithiviers, France died April 25, 1840, Sceaux  French mathematician known for his work on definite integrals, electromagnetic theory, and probability (probability theory).       Poisson s family had… …   Universalium

• Poisson , Siméon-Denis — (1781–1840) French mathematician and mathematical physicist Poisson, born the son of a local government administrator at Pithiviers in France, studied at the Ecole Polytechnique, where his teachers included Pierre Simon Laplace and Joseph… …   Scientists

• Poisson, Denis — (1781 1840)    mathematician    Best known for his contributions to the theories of electricity and magnetism, Denis Poisson was born in Pithiviers, and was influenced by the work of joseph lagrange and pierre laplace. Named a peer of France in… …   France. A reference guide from Renaissance to the Present

• Law of small numbers — The law of small numbers may refer to* The Law of Small Numbers (book), authored by Ladislaus Bortkiewicz ** The Poisson distribution. Sometimes probability distributions are called laws , and the use of that name for this distribution originated …   Wikipedia

• Hooke's law — models the properties of springs for small changes in length Prof. Walter Lewin explains Hooke s law, in …   Wikipedia