<prompt> Kamen o belegwe ka Agostose 27, 1913, kua Toronto, morwa wa bafaladi ba Russia ba Bajuda. O goletše kua Chicago. O hweditše degree ya bachelor ka khemistri go tšwa Yunibesithing ya Chicago ka 1933 gomme a hwetša PhD ka khemistri ya tša tlhago go tšwa yunibesithing yona yeo ka 1936. Ka morago ga moo o ile a nyaka maemo a nyakišišo ka khemistri le nuclear physics ka tlase ga Ernest Lawrence ka radiation laboratory kua Berkeley, moo a šomilego ntle le tefo dikgwedi tše tshela go fihlela a thwetšwe go hlokomela go lokiša le go aba ditšweletšwa tša cyclotron. Le ge e le gore carbon-14 e be e tsebja pele, go utollwa ga tswakano ya carbon-14 go diregile kua Berkeley ge Kamen le Ruben ba thuntšhitše graphite ka cyclotron ka kholofelo ya go tšweletša isotope ya radioactive ya carbon yeo e ka dirišwago bjalo ka tracer ka go nyakišiša ditshepetšo tša khemikhale ka photosynthesis.  <response>: Ka 1936 