KnowraCoarse-grainingLinked fromLinked fromThe 6 pages that link to Coarse-graining, each with the reason it gives.All 6Related 6Renormalization groupRelated: Renormalization group transformations often integrate out short-distance details through coarse-graining.RenormalizationRelated: Renormalization uses it to remove short-distance detail before rescaling.Arrow of timeRelated: Macroscopic descriptions discard details that help make irreversible behavior emerge.Loschmidt's paradoxRelated: It helps explain why macroscopic entropy can rise while fine-grained Hamiltonian evolution preserves phase-space structure.Boltzmann's entropy formulaRelated: The choice of macroscopic description determines which microstates count toward Ω.Entropy as an arrow of timeRelated: Macroscopic entropy growth depends on ignoring microscopic details that preserve fine-grained information.