🔬 Discovery

Onsager reciprocal relations

Relación de reciprocidad de Onsager

Date
1931 · confidence high
Place
Providence, Rhode Island, United States
Credited to
Lars Onsager
Field
Cosmos & Earth

What was discovered

Laws expressing the equality of certain cross-coefficients between flows and forces in thermodynamic systems out of equilibrium, derived by Lars Onsager from the time-reversibility of microscopic dynamics.

What it led to

  • Foundation of the thermodynamics of irreversible processes
  • The 1968 Nobel Prize in Chemistry awarded to Onsager
  • Applications in thermoelectricity and coupled transport processes
  • Theoretical basis for the thermodynamics of biological systems out of equilibrium

Links

Sources✓ verified 2026-09-28