 During World War II, he served as a prominent member of a special summer session at the University of California, Berkeley at the invitation of Robert Oppenheimer , which outlined the first designs for the atomic bomb and served as the beginning of the Manhattan Project .
<clarity>  During World War II, he served as a prominent member of a special summer session at the University of California, Berkeley at the invitation of Robert Oppenheimer , which outlined the first designs for the atomic bomb and served as the beginning of the Manhattan Project .
 During World War II, he served as a prominent member of a special summer session at the University of California, Berkeley at the invitation of Robert Oppenheimer , which outlined the first designs for the and served as the beginning of the Manhattan Project .