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
Faisal I of Iraq following year. On 4 January 1919, Emir Faisal and Dr. Chaim Weizmann, President of the Zionist Organization, signed the Faisal–Weizmann Agreement for Arab-Jewish Cooperation, in which Faisal conditionally accepted the Balfour Declaration, a personal declaration by British politician, Lord Balfour, promising British support to the development of a Jewish homeland in Palestine. Once Arab states were granted autonomy from the European powers, years after the Faisal-Weizmann Agreement, and these new Arab nations were recognized by the Europeans and the U.N., Weizmann argued that since the fulfillment was kept eventually, the agreement for a Jewish homeland in Palestine still held. In