Portrait of William Rowan Hamilton
. Miscellaneous Items in High Demand, PPOC, Library of Congress; 1885 autotype after a photograph taken in 1857; Commons crop by KOKUYO. Public domain: life plus 100 years and U.S. publication before 1931. Source usage terms, via Wikimedia Commons. Source. Articles by others on the same topic
William Rowan Hamilton (1805–1865) was an Irish mathematician, astronomer, and physicist, best known for his contributions to classical mechanics, optics, and algebra. He is particularly famous for the development of Hamiltonian mechanics, a reformulation of Newtonian mechanics that uses the principles of energy rather than forces, which laid the groundwork for modern theoretical physics.
.jpg?width=260)