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- Loschmidts_paradox abstract "Loschmidt's paradox, first published by Sir William Thomson, 1st Baron Kelvin, in 1874, also known as the reversibility paradox, irreversibility paradox or Umkehreinwand, is the objection that it should not be possible to deduce an irreversible process from time-symmetric dynamics. This puts the time reversal symmetry of (almost) all known low-level fundamental physical processes at odds with any attempt to infer from them the second law of thermodynamics which describes the behaviour of macroscopic systems. Both of these are well-accepted principles in physics, with sound observational and theoretical support, yet they seem to be in conflict; hence the paradox.Johann Loschmidt's criticism was provoked by the H-theorem of Boltzmann, which was an attempt to explain using kinetic theory the increase of entropy in an ideal gas from a non-equilibrium state, when the molecules of the gas are allowed to collide. In 1876, Loschmidt pointed out that if there is a motion of a system from time t0 to time t1 to time t2 that leads to a steady decrease of H (increase of entropy) with time, then there is another allowed state of motion of the system at t1, found by reversing all the velocities, in which H must increase. This revealed that one of Boltzmann's key assumptions, molecular chaos, or, the Stosszahlansatz, that all particle velocities were completely uncorrelated, did not follow from Newtonian dynamics. One can assert that possible correlations are uninteresting, and therefore decide to ignore them; but if one does so, one has changed the conceptual system, injecting an element of time-asymmetry by that very action.Reversible laws of motion cannot explain why we experience our world to be in such a comparatively low state of entropy at the moment (compared to the equilibrium entropy of universal heat death); and to have been at even lower entropy in the past.".
- Loschmidts_paradox wikiPageExternalLink node2.html.
- Loschmidts_paradox wikiPageExternalLink fibonacci_chaos_and_times_arrow.
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- Loschmidts_paradox wikiPageRevisionID "663715265".
- Loschmidts_paradox wikiPageWikiLink Antiparticle.
- Loschmidts_paradox wikiPageWikiLink Arrow_of_time.
- Loschmidts_paradox wikiPageWikiLink Australian_National_University.
- Loschmidts_paradox wikiPageWikiLink Axiom_of_Causality.
- Loschmidts_paradox wikiPageWikiLink Big_Bang.
- Loschmidts_paradox wikiPageWikiLink Boltzmann.
- Loschmidts_paradox wikiPageWikiLink CPT_symmetry.
- Loschmidts_paradox wikiPageWikiLink Category:Non-equilibrium_thermodynamics.
- Loschmidts_paradox wikiPageWikiLink Category:Philosophy_of_thermal_and_statistical_physics.
- Loschmidts_paradox wikiPageWikiLink Category:Physical_paradoxes.
- Loschmidts_paradox wikiPageWikiLink Closed_system.
- Loschmidts_paradox wikiPageWikiLink Cosmic_inflation.
- Loschmidts_paradox wikiPageWikiLink Debra_Searles.
- Loschmidts_paradox wikiPageWikiLink Denis_Evans.
- Loschmidts_paradox wikiPageWikiLink Dissipative_system.
- Loschmidts_paradox wikiPageWikiLink Edith_M._Sevick.
- Loschmidts_paradox wikiPageWikiLink Entropy_(arrow_of_time).
- Loschmidts_paradox wikiPageWikiLink Entropy_(classical_thermodynamics).
- Loschmidts_paradox wikiPageWikiLink Ergodic_theory.
- Loschmidts_paradox wikiPageWikiLink Fluctuation_theorem.
- Loschmidts_paradox wikiPageWikiLink H-theorem.
- Loschmidts_paradox wikiPageWikiLink Heat_death_of_the_universe.
- Loschmidts_paradox wikiPageWikiLink Inflation_(cosmology).
- Loschmidts_paradox wikiPageWikiLink Irreversible_process.
- Loschmidts_paradox wikiPageWikiLink Johann_Josef_Loschmidt.
- Loschmidts_paradox wikiPageWikiLink Johann_Loschmidt.
- Loschmidts_paradox wikiPageWikiLink Kinetic_theory.
- Loschmidts_paradox wikiPageWikiLink Ludwig_Boltzmann.
- Loschmidts_paradox wikiPageWikiLink Maximum_entropy_thermodynamics.
- Loschmidts_paradox wikiPageWikiLink Meson.
- Loschmidts_paradox wikiPageWikiLink Mixing_(mathematics).
- Loschmidts_paradox wikiPageWikiLink Molecular_chaos.
- Loschmidts_paradox wikiPageWikiLink Optical_tweezers.
- Loschmidts_paradox wikiPageWikiLink Paradox.
- Loschmidts_paradox wikiPageWikiLink Phase_space.
- Loschmidts_paradox wikiPageWikiLink Poincaré_recurrence_theorem.
- Loschmidts_paradox wikiPageWikiLink Reversible_process_(thermodynamics).
- Loschmidts_paradox wikiPageWikiLink Second_law_of_thermodynamics.
- Loschmidts_paradox wikiPageWikiLink Statistical_mechanics.
- Loschmidts_paradox wikiPageWikiLink T-symmetry.
- Loschmidts_paradox wikiPageWikiLink Thomas_Gold.
- Loschmidts_paradox wikiPageWikiLink Time_reversal_symmetry.
- Loschmidts_paradox wikiPageWikiLink Transfer_operator.
- Loschmidts_paradox wikiPageWikiLink Wandering_set.
- Loschmidts_paradox wikiPageWikiLink William_Thomson,_1st_Baron_Kelvin.
- Loschmidts_paradox wikiPageWikiLinkText "Loschmidt's paradox".
- Loschmidts_paradox wikiPageWikiLinkText "repeats itself".
- Loschmidts_paradox hasPhotoCollection Loschmidts_paradox.
- Loschmidts_paradox wikiPageUsesTemplate Template:Main.
- Loschmidts_paradox subject Category:Non-equilibrium_thermodynamics.
- Loschmidts_paradox subject Category:Philosophy_of_thermal_and_statistical_physics.
- Loschmidts_paradox subject Category:Physical_paradoxes.
- Loschmidts_paradox hypernym Objection.
- Loschmidts_paradox comment "Loschmidt's paradox, first published by Sir William Thomson, 1st Baron Kelvin, in 1874, also known as the reversibility paradox, irreversibility paradox or Umkehreinwand, is the objection that it should not be possible to deduce an irreversible process from time-symmetric dynamics.".
- Loschmidts_paradox label "Loschmidt's paradox".
- Loschmidts_paradox sameAs Paradosso_di_Loschmidt.
- Loschmidts_paradox sameAs 不可逆性問題.
- Loschmidts_paradox sameAs m.034nkq.
- Loschmidts_paradox sameAs Q3895095.
- Loschmidts_paradox sameAs Q3895095.
- Loschmidts_paradox sameAs 洛施密特悖论.
- Loschmidts_paradox wasDerivedFrom Loschmidts_paradoxoldid=663715265.
- Loschmidts_paradox isPrimaryTopicOf Loschmidts_paradox.