About 4,290,000 results
Open links in new tab
  1. Entropy - Wikipedia

    Entropy is central to the second law of thermodynamics, which states that the entropy of an isolated system left to spontaneous evolution cannot decrease with time. As a result, isolated …

  2. 12.3 Second Law of Thermodynamics: Entropy - OpenStax

    Entropy also describes how much energy is not available to do work. The more disordered a system and higher the entropy, the less of a system's energy is available to do work.

  3. Entropy | Definition & Equation | Britannica

    Dec 19, 2025 · The idea of entropy provides a mathematical way to encode the intuitive notion of which processes are impossible, even though they would not violate the fundamental law of …

  4. Understanding the Second Law of Thermodynamics: How Entropy

    The Second Law of Thermodynamics associates the entropy changes of both the system and the surroundings to matter spread and energy spread, providing a reliable means of predicting …

  5. 7.2: Entropy and The Second Law of Thermodynamics

    Dec 8, 2024 · To understand the relationship between internal energy and entropy. The first law of thermodynamics governs changes in the state function we have called internal energy (U).

  6. Second Law of Thermodynamics and Entropy - Physics Book

    Aug 4, 2019 · The Second Law of Thermodynamics states that the entropy of the Universe will always increase over time. The second law also states that the change in the entropy of the …

  7. Entropy: The Invisible Force That Brings Disorder to the Universe

    Nov 30, 2023 · These are the problems associated with the Second Law of Thermodynamics, also known as the Law of Entropy. There are many thermodynamic states of entropy change …

  8. Entropy and the Second Law of Thermodynamics: Disorder and …

    In thermodynamics, this disorder is captured by the concept of entropy, a state function that quantifies the unavailability of energy for work. Recall that energy is defined as the ability to do …

  9. Second law of thermodynamics - Wikipedia

    The second law of thermodynamics establishes the concept of entropy as a physical property of a thermodynamic system. It predicts whether processes are forbidden despite obeying the …

  10. Second Law - Entropy | Glenn Research Center | NASA

    Nov 22, 2023 · Entropy has a variety of physical interpretations, including the statistical disorder of the system, but for our purposes, let us consider entropy to be just another property of the …