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  1. Laws of thermodynamics | Definition, Physics, & Facts | Britannica

    Oct 17, 2025 · Laws of thermodynamics, four relations underlying thermodynamics, the branch of physics concerning heat, work, temperature, and energy and the transfer of such energy. The …

  2. Thermodynamics | Laws, Definition, & Equations | Britannica

    Oct 15, 2025 · Thermodynamics, science of the relationship between heat, work, temperature, and energy. Thermodynamics deals with the transfer of energy from one place to another and …

  3. First law of thermodynamics | Definition & Facts | Britannica

    Nov 21, 2025 · first law of thermodynamics, thermodynamic relation stating that, within an isolated system, the total energy of the system is constant, even if energy has been converted from …

  4. Adiabatic process | Isothermal, Entropy & Temperature | Britannica

    Oct 31, 2025 · Adiabatic process, in thermodynamics, change occurring within a system as a result of transfer of energy to or from the system in the form of work only; i.e., no heat is …