Schwinger leaves Berkeley in the Summer of 1941 to accept an instructorship at Purdue University and in 1942 is promoted to Assistant Professor. In this period he teaches elementary physics to engineering students. Beginning in 1943, he receives a series of leaves of absence to work as a member of the staff at the MIT Radiation Laboratory, and later at the Metallurgical Laboratory of the University of Chicago. Despite being on leave of absence he is promoted to Research Professor in Theoretical Physics at Purdue.

In the autumn of 1945, Julian Seymor Schwinger accepts an appointment as an Associate Professor at Harvard University that starts in February 1946. Schwinger is promoted to Full Professor in 1947, a position he holds until 1971. In 1957 he proposes the existence of two different neutrinos, one linked to the electron and one linked to the muon. Later experimental work has verified these theoretical conclusions.

Julian Seymor Schwinger marries Clarica Carroll in Boston.

Julian Seymor Schwinger dies at his home in Los Angeles, CA, from pancreatic cancer. He is 76 years old.

At the age of 14, Julian Schwinger enrols at the Townsend Harris, a selective New York High School for gifted students. His precocity as a genius in physics is soon recognized by his teacher Irving Lowen. Schwinger graduates in 1934.

At a conference held at the Pocono Manor Inn in the Pocono Mountains of Pennsylvania, Julian Seymor Schwinger reports his fully covariant formulation of the renormalization of quantum electrodynamics. He also shows that his methods allow for a correct derivation of experimental phenomena already observed, such as the Lamb effect and the anomalous magnetic momentum of the electron.

Julian Seymor Schwinger is born in Manhattan as the second child of a middle class Jewish family. Both his father and his mother's parents are prosperous clothing manufacturers.

Rabi gets Julian Seymor Schwinger a travelling fellowship. The plans are for him to spend six months at Wisconsin to study with Gregory Breit and Eugene Wigner, and then to go on to the University of California, Berkeley, for another six months to work with J. Robert Oppenheimer but instead he ends up staying at Wisconsin for the year. There, Schwinger develops his typical working style: staying up at night and sleeping during the day.

Julian Seymor Schwinger receives one third of the Nobel Prize in Physics along with S. I. Tomonaga and R. Feynman "for their fundamental work in quantum electrodynamics, with deep-ploughing consequences for the physics of elementary particles."

Julian Seymor Schwinger obtains a National Research Council Fellowship to work with R. J. Oppenheimer at the University of California, Berkeley. The relationship between them is not good at the beginning, but after some months Oppenheimer begins to greatly appreciate Schwinger, who, by the other hands, becomes more and more influenced by Oppenheimer's style. From 1940 to 1941, Schwinger is a Research Associate. During this period tensor forces become a central focus of his investigation.

Julian Seymor Schwinger receives his Bachelor's degree from Columbia University in 1936. There, he works on the problem of the magnetic scattering of slow neutrons by atoms through a quantum mechanical treatment.

In fall 1934, Julian Seymor Schwinger enters the City College of New York. In this period he begins writing papers in theoretical physics that show a deep knowledge of quantum field theory. Dirac's papers constitute the overwhelming influence on Schwinger's approach. His interest in current problems of advanced physics prevents Schwinger to attend all the classes. This situation is affecting his curriculum, and Rabi helps him in obtaining a scholarship to transfer at Columbia University.

Julian S. Schwinger leaves Harvard University and accepts a position at the UCLA (University of California at Los Angeles). This professional change is related to both professional and private reasons. From a professional perspective, he feels isolated at Harvard because he is following lines of research not accepted by the majority of physicists. At the same time, for health reasons, Schwinger prefers to live in California. He is named University Professor in 1980 and becomes Emeritus in 1988.

At the age of 21, Julian S. Schwinger earns his PhD in 1939 at Columbia University under the supervision of I. Rabi. He becomes actively involved in the experimental activities at Columbia. He publishes several papers on various topics, including the scattering of neutrons, the quadrupole moment of deuteron, the widths of nuclear energies. His dissertation is composed of a series of papers published two-three years earlier as an undergraduate.

In the autumn of 1943, Julian Seymor Schwinger joins the MIT Radiation Laboratory to work there full time. Schwinger works within the theoretical group leaded by G. Uhlenbeck. Schwinger carries on research on a number of problems connected to the theory of waveguides. He develops variational techniques that produce major advances in several fields of mathematical physics. This experience leads him to approach nuclear problems with the language of electrical engineering.

Julian Seymor Schwinger is one of the 27 physicists invited to attend the Shelter Island conference on the foundation of theoretical physics held at the Ram's Head Inn. The conference provides inspiration for his following work on the renormalization of quantum electrodynamics.

Julian Seymor Schwinger is one of the lecturers at the University of Michigan Summer Symposium (8 weeks), where he meets Pauli, Seitz, Weisskopf, and other important physicists.