27 May 1887|
|Died||18 May 1975
Ann Arbor, Michigan, United States
|Known for||Discovery of protactinium
Kazimierz Fajans (b. 27 May 1887 in Warsaw, Poland; d. 18 May 1975 in Ann Arbor, Michigan, USA) was a Polish physical chemist. He was a pioneer in the science of radioactivity working in the United States.