See also: 1840 in science, other events of 1841, 1842 in science and the list of years in science.
Mathematics Awards Copley Medal: Georg Ohm Wollaston Medal: Adolphe Theodore Brongniart Births January 28 - Henry Morton Stanley, explorer, journalist († 1904) February 2 - Fran?is-Alphonse Forel, pioneer in the study of lakes († 1912) February 4 - Cl?ent Ader, engineer and inventor, airplane pioneer († 1926) February 24 - Carl Gr?e, chemist († 1927) March 6 - Marie Cornu, physicist († 1902) August 25 - Emil Theodor Kocher, 1909 winner of the Nobel Prize in Physiology or Medicine († 1917) Deaths September 9 - Augustin Pyrame de Candolle , botanist (* 1778) October 28 - Johann Arfvedson, chemist (* 1792)