University of Michigan

The University of Michigan served in the account as a recurring summer setting for J. Robert Oppenheimer’s teaching and scientific exchange. Its physics sessions in Ann Arbor brought him together with students and visiting physicists, and in 1934 one of his lectures helped redirect Robert Serber’s career toward Berkeley and began their lifelong friendship.

Summer Sessions in Ann Arbor

After Berkeley’s semester ended in April, some of Oppenheimer’s students followed him south to teach at Caltech in Pasadena; in summer, some also joined him for several weeks at the University of Michigan’s summer physics seminar in Ann Arbor. The movement of students between these settings shows the seminar’s place in a wider, informal academic circuit built around Oppenheimer’s teaching.

In the summer of 1931, Oppenheimer’s former teacher Wolfgang Pauli attended the Ann Arbor seminar. Pauli repeatedly interrupted Oppenheimer’s presentation until physicist H. A. Kramers intervened, telling Pauli to let Oppenheimer speak and save his criticism for afterward. The episode conveyed the seminar’s lively, sometimes sharp-edged exchange and enhanced the impression of Oppenheimer as a brilliant figure among his peers.

Oppenheimer’s 1934 Lecture

In June 1934, Oppenheimer returned to the University of Michigan summer school and lectured on his latest critique of the Dirac equation. Robert Serber, then a young postdoctoral fellow, was so impressed that he decided immediately to switch his research fellowship from Princeton to Berkeley.

The lecture’s effect extended beyond the seminar room. A week or two after Serber arrived in Berkeley, Oppenheimer invited him to a movie; the meeting marked the beginning of a lifelong friendship. In this account, the University of Michigan is thus not merely a place where Oppenheimer taught: its summer program was one of the settings in which his scientific influence became personal and helped shape his close circle of collaborators.