Fritz Strassmann, German chemist and physicist (b. 1902)
Friedrich Wilhelm Strassmann (German: [fʁɪt͡s ˈʃtʁasˌman] (listen); 22 February 1902 – 22 April 1980) was a German chemist who, with Otto Hahn in early 1939, identified the element barium as a product of the bombardment of uranium with neutrons. Their observation was the key piece of evidence necessary to identify the previously unknown phenomenon of nuclear fission, as was subsequently recognized and published by Lise Meitner and Otto Frisch.