Albert Einstein transformed the world of physics with his groundbreaking theory of relativity, and in 1921 he received the Nobel Prize for “his services to theoretical physics” and “his discovery of the law of photoelectric effect.” The German-born physicist was visiting the United States when Hitler and the Nazis came to power in his homeland in 1933. Einstein never returned to Germany. Instead, he accepted a position at the Institute for Advanced Study in Princeton, New Jersey—the newly established academic institution that would become a major center for research in theoretical physics. In residence at the institute for the remainder of his life, Einstein continued to publish, work on the interpretation of quantum theory, and wrestle without success on his unified field theory. He became a U.S. citizen in 1940.
Karsh relished the opportunity to photograph Einstein, whose face, “in all its rough grandeur, invited and challenged the camera.”