After completing his graduate studies, he worked at the Institute of Physical and Chemical Research in Tokyo and in 1929 he was Dirk Coster's assistant at the University of Groningen in the Netherlands.
Among his students were Johannes Burgers, Hendrik Kramers, Dirk Coster, George Uhlenbeck and Samuel Goudsmit, who became famous for jointly proposing the concept of electron spin, Jan Tinbergen, Arend Rutgers, Hendrik Casimir, Gerhard Dieke, Dirk Struik, and Gerard Kuiper.
Heinrich Himmler | Gerhard Schröder | Heinrich Heine | Heinrich Schütz | Johann Heinrich Pestalozzi | Heinrich von Kleist | Gerhard Richter | Heinrich Böll | Heinrich Isaac | Gerhard Müller (rower) | Gerhard Müller | Heinrich Marschner | Baron Hans Heinrich Thyssen-Bornemisza | Gerhard von Scharnhorst | Heinrich Mann | Heinrich Hertz | Heinrich Graetz | Heinrich Böll Foundation | Christian Heinrich Friedrich Peters | Wilhelm Heinrich Roscher | Johann Heinrich Lambert | Heinrich von Breymann | Heinrich Finck | Gerhard Munthe | Heinrich Zimmer | Heinrich Wilhelm Ernst | Heinrich Wilhelm Dove | Heinrich Wild | Heinrich von Bibra | Heinrich Schenker |