Stanislaw Ulam and the Manhattan Project's Unlikely Heroes

Polish mathematician Stanislaw Ulam, a Jewish refugee from Lvov (his entire family in Poland was murdered in the Holocaust), was recruited to the Manhattan Project to work on the implosion lens calculations for the atomic bomb. He developed the Monte Carlo method — essentially using random numbers to solve complex mathematical problems — specifically to calculate whether an implosion-type atomic bomb was feasible. His method became foundational to computational mathematics and is used today in everything from computer graphics to financial modeling. He later developed the Teller-Ulam design for the hydrogen bomb.