Chaim L. Pekeris joined the Weizmann Institute as head of its Department of Applied Mathematics in 1949. He died in Rehovot, Israel on February 24, 1993. Chaim L. Pekeris Chaim Leib Pekeris (June 15, 1908 – February 24, 1993) was an Israeli-American physicist and mathematician. He made notable contributions to geophysics and the spectral theory of many-electron atoms, in particular the Helium atom. He was also one of the designers of the first computer in Israel, WEIZAC. Pekeris was born in Alytus, Vilna Governorate. With the assistance of his uncle, Pekeris and his two brothers emigrated to the United States around 1925. He
Chaim Weizmann was breaking off the relationship with Getzowa until 1903. His behavior was seen as dishonorable, creating fractures with others in the Zionist movement. His fellow students held a mock-court proceeding and ruled that Weizmann, should uphold his commitment and marry Getzowa, even if he later divorced her. Weizmann ignored their advice. In 1904, he moved to the United Kingdom after receiving a job offer from the Chemistry Department of the University of Manchester. He was appointed senior lecturer. In 1910, he became a British citizen, and held his British nationality until 1948, when he renounced it to assume his position