Entropy (disambiguation)
Entropy, in thermodynamics, is a property originally introduced to explain the part of the internal energy of a thermodynamic system that is unavailable as a source for useful work. Entropy may also refer to: Thermodynamics and statistical mechanics Entropy (classical thermodynamics), thermodynamic entropy in macroscopic terms, with less emphasis on the statistical explanation Entropic force. The product of temperature and the gradient of the entropy density is viewed an effective force, yielding a gradient in the energy density of a system. Entropy production. Development of entropy in a thermodynamic system. Entropy (statistical thermodynamics), the statistical explanation of thermodynamic entropy based on probability theory Configuration entropy, the entropy change due to a change in the knowledge of the position of particles, rather than their momentum Conformational entropy, the entropy change due to a change in the "configuration" of a particle (e.g. a right-handed vs. a left-handed polyatomic molecule) Tsallis entropy, a generalization of Boltzmann-Gibbs entropy von Neumann entropy, entropy in quantum statistical physics and quantum information science Introductory articles Introduction to entropy an explanation on entropy as a measure of irreversibility Entropy (order and disorder), the relationship of disorder with heat and work Entropy in thermodynamics and information theory, the relationship