Photo credit: Benjamin Harrow — File:Richards Theodore William desk.jpg (Wikimedia Commons) · Public domain
Theodore William Richards
1868–1928 · United States · Born in the 1800s
Nobel Chemistry 1914
Harvard analytical chemist, the first American to win the Nobel Prize in Chemistry, famed for exact atomic-weight measurements.
Nobel Prize work
Honoured for his exceptionally accurate determinations of the atomic weights of more than thirty elements. By driving gravimetric analysis to unprecedented precision, Richards showed that atomic weights are not always exact integers, providing early evidence of isotopes before their discovery.