Ngokusekelwe kulesi sigaba, ngitshele ukuthi ubani owabangela ukutholakala kokuhlukana kwe-nuclear.
Context:Ukuqhekeka kwezinto ezisindayo kwatholakala ngoMsombuluko 19 Disemba 1938 eBerlin, ngukhemikhali waseJalimane u-Otto Hahn nomsizi wakhe uFritz Strassmann ngokubambisana nesazi sezomzimba sase-Austria-Sweden uLise Meitner. UHahn waqonda ukuthi kwakwenzeke "ukuqhuma" kwezinhlayiya ze-athomu. UMeitner wayichaza ngokwemfundiso ngoJanuwari 1939 kanye nomshana wakhe u-Otto Robert Frisch. UFrisch waqamba le nqubo ngokuthi i-biological fission yamangqamuzana aphilayo. Encwadini yabo yesibili ephathelene nokuqhekeka kwamangqamuzana enyukliya ngo-February ka-1939, uHahn noStrassmann babikezela ukuba khona nokukhululwa kwama-neutron engeziwe phakathi nenqubo yokuqhekeka kwamangqamuzana enyukliya, okuvula ithuba lokwenzeka kokusabela kwamangqamuzana enyukliya.
U-Otto Hahn nomsizi wakhe uFritz Strassmann baphumelela ekuqhekekeni kwe-nuclear elabhorethri, kodwa abakwazanga ukuchaza okwakwenzekile. KwakunguLise Meitner nomshana wakhe u-Otto Robert Frisch abahumusha imiphumela yaselabhorethri futhi bathola ukuthi kwakwenzeke ukuqhuma kwe-nuclear.