Second Law of Thermodynamics

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Full Title or Meme

The entropy of isolated systems left to spontaneous evolution cannot decrease, as they always arrive at a state of thermodynamic equilibrium where the entropy is highest at the given internal energy.

Context

  • The original purpose of the Second Law of Thermodynamics was by Carnot in the determination of the maximum efficiency of steam engines.
  • Boltzmann argued that the Second Law is statistical in nature and stated that while systems with increasing are possible, their occurrence could be assigned an extremely low probability.
  • Boltzmann's solution in terms of large ensembles of point particles has become the field of Statistical Physics, which is the only physical law that is not deterministic.
  • In communications and information sciences, the Second Law of Thermodynamics is typically addressed as a statement about information.
  • From computer science Rolf Landauer used information theory to determine that while reversible computation was possible, the erasure of information always resulted in loss of energy.
  • Now physicists are using Landauer's results to [1]

References

  1. Philip Ball, Physicists Rewrite the Fundamental Law That Leads to Disorder Quanta Magazine (2022-05-16) https://www.quantamagazine.org/physicists-trace-the-rise-in-entropy-to-quantum-information-20220526/