[[Enrico Fermi]], perhaps the greatest physicist of the time, did the foundational work at the University of Chicago before [[The Manhattan Project]] began. Others, such as the mathematician [[Paul Erdos]], declined to join [[The Manhattan Project]]. | [[Enrico Fermi]], perhaps the greatest physicist of the time, did the foundational work at the University of Chicago before [[The Manhattan Project]] began. Others, such as the mathematician [[Paul Erdos]], declined to join [[The Manhattan Project]]. |