ˈæftɚ wˈɜːkɪŋ ɪnðɪ ˈɪnstɪtˌuːt fɔːɹ tˈuː mˈoːɹ jˈɪɹz, hiː bɪkˌeɪm ɐ fˈɪzɪks pɹəfˈɛsɚ ænd ðə tʃˈɛɹ ʌvðə fˈɪzɪks dᵻpˈɑːɹtmənt æt ðə mˈɑːskoʊ stˈeɪt jˌuːnɪvˈɜːsᵻɾi ɪn nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi wˈʌn.
After working in the institute for two more years, he became a physics professor and the chair of the physics department at the Moscow State University in 1931.