<prompt> Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu: Kupfuura: Pashure pegore rimwe rokupinda hurukuro dzaPlanck, Meitner akava mubetseri waPlanck. Mumakore okutanga akashanda pamwe chete nemuchemisi Otto Hahn uye pamwe chete naye akawana isotopes itsva dzinoverengeka. Muna 1909 akapa mapepa maviri pamusoro pe beta radiation. Iyewo, pamwe chete naOtto Hahn, akawana ndokugadzira nzira yokuparadzanisa yomuviri inozivikanwa seye radioactive recoil, umo nyukireya yomwanasikana inodzingwa nesimba kubva mumatrix yayo sezvo ichidzokera shure panguva yokuora. Mubvunzo: Ndiani akamubatsira kuwana isotopes itsva?  <response>: Otto Hahn 