Schrödinger has this portrait
commissioned on the occasion
of his call to Berlin, 1927
Physicists all over the world are impressed by Schrödinger‘s work on quantum mechanics. As a result, he is invited to hold guest lectures at the major universities and is called to the Humboldt University in Berlin to take over the chair for theoretical physics which became available after Max Planck resigned.
Although Schrödinger is quite happy in Switzerland and both the university administration and the students try hard to persuade him to stay, he decides to follow the call to Berlin. Planck’s mediation plays a role in this when he personally intervenes with Schrödinger to consider the change.