ɪn ɑːktˈoʊbɚ wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd nˈaɪnti hiː ɹᵻsˈiːvd hɪz hˌæbɪlɪtˈeɪʃən ɪn fˈɪzɪks ænd baɪ wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd nˈaɪnti sˈɪks, hiː hæd ɐtʃˈiːvd ðə tˈaɪɾəl ʌv pɹəfˈɛsɚ.
In October 1890 he received his Habilitation in Physics and by 1896, he had achieved the title of Professor.