KnowraSecond law of thermodynamicsLinked fromLinked fromThe 48 pages that link to Second law of thermodynamics, each with the reason it gives.All 48Broader topic 2Related 32Narrower topic 9Compared with 5First law of thermodynamicsCompared with: Energy conservation alone does not determine which processes can occur spontaneously.Free energyCompared with: The second law constrains spontaneous change; free energy packages that constraint for fixed conditions.Fluctuation theoremCompared with: The theorem explains how this average law coexists with finite-time entropy-decreasing fluctuations.Third law of thermodynamicsCompared with: The second law constrains entropy change; the third law sets its low-temperature limit.Zeroth law of thermodynamicsCompared with: It constrains heat-flow direction; the zeroth law establishes temperature comparison.