In the summer of 1889, he accompanied Maiorescu on a trip to Austria-Hungary, Germany, and Switzerland, notably visiting the University of Vienna and the University of Munich, establishing contacts with German academics.
Between 1890 and 1893, Rădulescu settled in Germany - he lived in Munich and studied at the university for one semester (as a student of Carl Stumpf), and then moved to Leipzig, where he began working in the laboratory of Wilhelm Wundt at the local university.