Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Oppenheimer natara onyinye nke United States National Research Council na California Institute of Technology (Caltech) na Septemba 1927. Bridgman chọkwara ya na Harvard, ya mere e mere nkwekọrịta nke ọ ga-eji kewaa ụmụ akwụkwọ ya maka afọ agụmakwụkwọ 1927<unk>28 n'etiti Harvard na 1927 na Caltech na 1928. Na Caltech, ya na Linus Pauling ghọrọ ezigbo enyi, ha wee mee atụmatụ ịwakpo ọdịdị nke njikọ kemịkal, nke Pauling bụ onye ọsụ ụzọ, Oppenheimer na-enye mgbakọ na mwepụ na Pauling na-akọwa nsonaazụ ya. Ma mmekorita ya na ọbụbụenyi ha kwụsịrị na nwa mgbe Pauling malitere iche na Oppenheimer na nwunye ya, Ava Helen Pauling na-akpachi anya. N'otu oge, mgbe Pauling nọ n'ọrụ, Oppenheimer bịarutere n'ụlọ ha ma kpọọ Ava Helen ka o soro ya gaa Mexico. Ọ bụ ezie na ọ jụrụ ma kọọrọ di ya ihe ahụ merenụ, ọkpụkpọ òkù ahụ, na enweghị mmasị ya doro anya banyere ya, nyere Pauling nsogbu na ọ kwụsịrị mmekọrịta ya na Oppenheimer. Oppenheimer mechara kpọọ ya ka ọ bụrụ onye isi nke Ngalaba Chemistry nke Manhattan Project, mana Pauling jụrụ, na-ekwu na ọ bụ onye na-eme udo. N'oge mgbụsị akwụkwọ nke 1928, Oppenheimer gara ụlọ akwụkwọ Paul Ehrenfest na Mahadum Leiden, Netherlands, ebe ọ masịrị ya site n'ikwu okwu n'asụsụ Dutch, n'agbanyeghị na ọ nwere obere ahụmịhe na asụsụ ahụ. N'ebe ahụ, e nyere ya aha njirimara Opje, nke ụmụ akwụkwọ ya mechara kpọọ "Oppie". Site na Leiden ọ gara n'ihu na Swiss Federal Institute of Technology (ETH) na Zurich iji soro Wolfgang Pauli rụọ ọrụ na quantum mechanics na ụdịdị dị iche iche na-aga n'ihu. Oppenheimer kwanyeere Pauli ùgwù ma nwee mmasị n'ebe ọ nọ, ọ pụkwara ịbụ na o ṅomiri ụdị àgwà ya nakwa otú o si ele nsogbu anya.  Ajụjụ: Olee ụlọ akwụkwọ nyere Oppenheimer ohere ịgụ akwụkwọ?
Ụlọ Akwụkwọ Teknụzụ California