doctoral_advisor native_name_lang death_date death_place birth_place nationality fields workplaces native_name birth_date known_for residence image article_title academic_advisors name alma_mater
igor kurchatov ru 10 october 1998 russia Łuków Łuków , poland -rrb- , congress poland , russian empire -lrb- now pole physics -lrb- nuclear -rrb- khlopin radium institute saint petersburg state institute of technology Константин Антонович Петржак 4 september 1907 discovery of spontaneous fission ussr russia konstantin petrzhak.jpg konstantin petrzhak
 vitaly khlopin konstantin petrzhak saint petersburg state university
konstantin petrzhak

konstantin petrzhak -lrb- or konstantin pietrzak ; ; 1907-1998 -rrb- was a soviet physicist of polish origin .
he discovered spontaneous fission of uranium jointly with georgy flyorov in 1940 .
