[[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 [[mathematics|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 [[mathematics|mathematician]] [[Paul Erdos]], declined to join The [[Manhattan Project]]. |