• Thumbnail for Free entropy
    A thermodynamic free entropy is an entropic thermodynamic potential analogous to the free energy. Also known as a Massieu, Planck, or Massieu–Planck potentials...
    8 KB (1,386 words) - 20:13, 3 January 2025
  • Thumbnail for Gibbs free energy
    of heat) such that the total entropy change of the universe is greater than or equal to zero, making the total Gibbs free energy change of the coupled...
    33 KB (4,550 words) - 17:40, 5 June 2025
  • Negentropy (redirect from Negative entropy)
    to normality. It is also known as negative entropy or syntropy. The concept and phrase "negative entropy" was introduced by Erwin Schrödinger in his...
    11 KB (1,225 words) - 18:26, 10 June 2025
  • Thumbnail for Entropy
    Entropic force Entropic value at risk Entropy and life Entropy unit Free entropy Harmonic entropy Info-metrics Negentropy (negative entropy) Phase space...
    111 KB (14,228 words) - 21:07, 24 May 2025
  • Thumbnail for Helmholtz free energy
    "Physical Chemistry" McGraw-Hill: University of Brooklyn. "4.3 Entropy, Helmholtz Free Energy and the Partition Function". theory.physics.manchester.ac...
    23 KB (4,205 words) - 18:17, 12 May 2025
  • Thumbnail for Thermodynamic free energy
    energy. The Gibbs free energy is given by G = H − TS, where H is the enthalpy, T is the absolute temperature, and S is the entropy. H = U + pV, where...
    28 KB (4,048 words) - 15:22, 26 May 2025
  • Thumbnail for Black hole thermodynamics
    law of thermodynamics requires that black holes have entropy. If black holes carried no entropy, it would be possible to violate the second law by throwing...
    25 KB (3,223 words) - 06:04, 1 June 2025
  • construction of free dimension is free entropy. The relation of free probability with random matrices is a key reason for the wide use of free probability...
    6 KB (682 words) - 18:48, 20 May 2025
  • Thumbnail for Second law of thermodynamics
    process." The second law of thermodynamics establishes the concept of entropy as a physical property of a thermodynamic system. It predicts whether processes...
    107 KB (15,472 words) - 01:32, 4 May 2025
  • It can also be understood to be the infinitesimal form of the relative entropy (i.e., the Kullback–Leibler divergence); specifically, it is the Hessian...
    27 KB (4,849 words) - 02:50, 10 June 2025
  • Thumbnail for Temperature–entropy diagram
    thermodynamics, a temperature–entropy (T–s) diagram is a thermodynamic diagram used to visualize changes to temperature (T ) and specific entropy (s) during a thermodynamic...
    3 KB (163 words) - 02:10, 8 January 2023
  • Thumbnail for Entropy (information theory)
    In information theory, the entropy of a random variable quantifies the average level of uncertainty or information associated with the variable's potential...
    72 KB (10,220 words) - 13:03, 6 June 2025
  • Thumbnail for Laws of thermodynamics
    define a group of physical quantities, such as temperature, energy, and entropy, that characterize thermodynamic systems in thermodynamic equilibrium....
    20 KB (2,893 words) - 08:03, 9 May 2025
  • Thumbnail for Non-equilibrium thermodynamics
    be done locally, and the macroscopic entropy will then be given by the integral of the locally defined entropy density. It has been found that many systems...
    50 KB (6,336 words) - 16:10, 7 June 2025
  • {A}{T}},} where Φ {\displaystyle \Phi } is Helmholtz free entropy, S {\displaystyle S} is entropy, U {\displaystyle U} is internal energy, T {\displaystyle...
    43 KB (7,543 words) - 20:05, 19 March 2025
  • Thumbnail for Energy
    Walther Nernst. It also led to a mathematical formulation of the concept of entropy by Clausius and to the introduction of laws of radiant energy by Jožef...
    59 KB (7,390 words) - 11:39, 16 June 2025
  • Thumbnail for Isothermal process
    change in entropy of the system is the same as in the reversible process and is given by the formulas above. Note that the result Q = 0 for the free expansion...
    16 KB (2,276 words) - 09:25, 23 April 2025
  • Thumbnail for Quasistatic process
    intensive quantities (such as pressure, temperature, specific volume, specific entropy) of the system at any instant during the whole process; otherwise, since...
    4 KB (580 words) - 13:24, 19 March 2024
  • Thumbnail for Pressure
    the system, The subscripts mean that the derivative is taken at fixed entropy ( S {\displaystyle S} ) and particle number ( N {\displaystyle N} ). The...
    46 KB (5,784 words) - 16:09, 21 May 2025
  • Thumbnail for Carnot cycle
    converted to the work done by the system. The cycle is reversible, and entropy is conserved, merely transferred between the thermal reservoirs and the...
    25 KB (3,234 words) - 11:10, 19 May 2025
  • Y Entropy S J/K Y Temperature T Y (entropic)     Specific entropy s J/(kg K) Y Fugacity f N/m2 Y Gibbs free energy G J Y Y     Specific Gibbs free energy...
    7 KB (334 words) - 05:35, 12 April 2022
  • Thumbnail for Thermodynamics
    deals with heat, work, and temperature, and their relation to energy, entropy, and the physical properties of matter and radiation. The behavior of these...
    48 KB (5,843 words) - 01:18, 16 June 2025
  • Thumbnail for Temperature
    including the macroscopic entropy, though microscopically referable to the Gibbs statistical mechanical definition of entropy for the canonical ensemble...
    104 KB (12,997 words) - 20:44, 12 June 2025
  • statistics, the Kullback–Leibler (KL) divergence (also called relative entropy and I-divergence), denoted D KL ( P ∥ Q ) {\displaystyle D_{\text{KL}}(P\parallel...
    77 KB (13,067 words) - 13:07, 12 June 2025
  • Thumbnail for Irreversible process
    capable of returning to its initial state. Because entropy is a state function, the change in entropy of the system is the same whether the process is reversible...
    20 KB (2,521 words) - 13:52, 6 April 2025
  • Thumbnail for Ideal gas law
    state 1 using the equations listed. ^ a. In an isentropic process, system entropy (S) is constant. Under these conditions, p1V1γ = p2V2γ, where γ is defined...
    34 KB (4,622 words) - 17:20, 31 May 2025
  • Thumbnail for Isochoric process
    Free energy Free entropy Internal energy U ( S , V ) {\displaystyle U(S,V)} Enthalpy H ( S , p ) = U + p V {\displaystyle H(S,p)=U+pV} Helmholtz free...
    4 KB (527 words) - 16:48, 28 April 2025
  • Thumbnail for Hermann von Helmholtz
    Virtual Laboratory of the Max Planck Institute for the History of Science Free scores by Hermann von Helmholtz at the International Music Score Library...
    37 KB (3,521 words) - 19:31, 9 June 2025
  • Thumbnail for Ideal gas
    Ideal gas (section Entropy)
    the entropy is an exact differential, using the chain rule, the change in entropy when going from a reference state 0 to some other state with entropy S...
    24 KB (3,821 words) - 02:41, 29 April 2025
  • Look up entropy in Wiktionary, the free dictionary. Entropy is a scientific concept that is most commonly associated with a state of disorder, randomness...
    5 KB (707 words) - 12:45, 16 February 2025