In 1905 Einstein obtained his doctorate from the University of Zurich under Alfred Kleiner, with the thesis entitled "Eine neue Bestimmung der Moleküldimensionen" (A New Determination of the Molecular Dimensions). After Einstein concluded a 1909 lecture at the University of Zurich on electrodynamics and relativity, Alfred Kleiner suggested the possibility of a position at the University to Einstein and recommended him for a newly created professorship in theoretical physics. On May 7, 1909, the "Regierungsrat des Kantons Zürich" appointed Einstein as an associate professor, effective from the October 15, 1909, with a salary of 4,500 Swiss Francs per annum.