See also: 1846 in science, other events of 1847, 1848 in science and the list of years in science.
Mathematics George Boole formalizes symbolic logic in The Mathematical Analysis of Logic, defining what are now called Boolean algebras Medicine Ignaz Semmelweis studies and prevents the transmission of puerperal fever Physics Hermann von Helmholtz formally states the law of conservation of energy Awards Copley Medal: John Herschel Wollaston Medal for Geology: Ami Boue Births Deaths March 9 - Mary Anning, paleontologist (* 1799)
