sentences:  His pleasant friendliness made him popular with colleagues and students, and in the 1948-9 term he was voted "Rector magnificus" at the Technical High School of Vienna.In the last month of his incumbency, he drowned in a boating accident on the Hintersteiner See, near Kufstein.From the very beginning of his career he made valuable contributions to astronomy, geodesy, geophysics and meteorology, in the applied fields as well as the theoretical, and published a great deal on all four subjects.