Kazimierz Fajans Scientist

Kazimierz Fajans (Kasimir Fajans in many American publications; 1887–1975) was an American physical chemist of Polish-Jewish origin and a pioneer in the science of radioactivity.

Personal facts

Birth date	May 27, 1887
Birth place	Warsaw , Congress Poland
Date of death	May 18, 1975
Place of death	Ann Arbor Michigan
Known for	Protactinium Fajans–Paneth–Hahn Law Radioactive displacement law of Fajans and Soddy Fajans' rules