Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: A kan shawarar da shawarar G. I. Taylor, Dyson ya koma Amurka a 1947 a matsayin dan takarar Commonwealth don samun digiri na digiri na digiri tare da Hans Bethe a Jami'ar Cornell (1947 <unk> 48). A nan ne ya haɗu da Richard Feynman. Masanin kimiyyar lissafi na Ingilishi ya fahimci kwarewar Ba'amurke mai ban sha'awa, kuma ya haɗa kansa da sauri. Daga nan sai ya koma Cibiyar Nazarin Ci gaba (1948 <unk> 49), kafin ya koma Ingila (1949 <unk> 51), inda ya kasance mai bincike a Jami'ar Birmingham. A cikin 1949 Dyson ya nuna daidaito na maganganu biyu na electrodynamics na quantum (QED): zane-zanen Richard Feynman da kuma hanyar mai aiki da Julian Schwinger da Shin'ichirō Tomonaga suka haɓaka. Shi ne mutum na farko bayan mahaliccin su don fahimtar ikon zane-zanen Feynman kuma takardarsa da aka rubuta a 1948 kuma aka buga a 1949 shi ne na farko da ya yi amfani da su. Ya ce a cikin wannan takarda cewa zane-zanen Feynman ba kawai kayan aiki ne na lissafi ba amma ka'idar kimiyyar lissafi da kuma ka'idojin da aka tsara don zane-zanen da suka warware matsalar sake daidaitawa. Takardar Dyson da kuma laccocinsa sun gabatar da ka'idodin Feynman na QED a cikin hanyar da sauran masana kimiyyar za su iya fahimta, suna sauƙaƙa karɓar aikin Feynman a cikin al'ummar kimiyyar lissafi. J. Robert Oppenheimer, musamman, Dyson ya shawo kansa cewa sabon ka'idar Feynman tana da inganci kamar ta Schwinger da Tomonaga. Oppenheimer ya ba Dyson lada tare da alƙawari na rayuwa a Cibiyar Nazarin Ci gaba, "don tabbatar da ni ba daidai ba", a cikin kalmomin Oppenheimer. Hakanan a cikin 1949, a cikin aikin da ya shafi hakan, Dyson ya ƙirƙira jerin Dyson. Wannan takarda ce ta sa John Ward ya samo asalin Ward <unk> Takahashi.A 1951 Dyson ya shiga sashin koyarwa a Cornell a matsayin farfesa a fannin kimiyyar lissafi, duk da cewa har yanzu ba shi da digirin digirgir, kuma a 1953 ya sami matsayi na dindindin a Cibiyar Nazarin Ci gaba a Princeton, New Jersey, inda ya kasance. A shekara ta 1957 ya zama ɗan ƙasar Amirka kuma ya yi watsi da zama ɗan ƙasar Biritaniya....  Tambaya: Menene sunan aikin da Dyson ya yi aiki a kai?
Shirin Orion