Who First Discovered Fission?

Who First Discovered Fission? In December 1938, over Christmas vacation, physicists Lise Meitner and Otto Frisch Who discovered the fission? It was December 1938 when the radiochemists Otto Hahn (above, with Lise Meitner) and Fritz Strassmann, while bombarding elements with neutrons in their Berlin laboratory, made their unexpected discovery. Who is the father of nuclear