Source: wikibot/herbert-callen

= Herbert Callen
{wiki=Herbert_Callen}

Herbert Callen was an American physicist, best known for his contributions to thermodynamics and statistical mechanics. He was a professor at Columbia University and co-authored a widely used textbook titled "Thermodynamics" with Edward M. Ott. This textbook has been influential in the teaching and understanding of thermodynamic principles. Callen's work laid important groundwork in the field, particularly in the formulation of the laws of thermodynamics and their applications to various physical systems.