Josiah Willard Gibbs

Josiah Willard Gibbs (1839–1903) was an American scientist and one of the most influential figures in the field of physical chemistry. He made significant contributions to thermodynamics, statistical mechanics, and physical chemistry, laying the groundwork for much of modern chemical theory. Some of his notable contributions include: 1. **Gibbs Free Energy:** Gibbs introduced the concept of Gibbs free energy, a thermodynamic potential that helps predict the feasibility of chemical reactions and determine the direction of spontaneity.