 Wigner moved to Princeton University in 1938 , and soon after Creutz received an offer as well . Princeton had been given a 36 @-@ inch ( 910 mm ) magnet by the University of California , which had been used to build an 8 MeV cyclotron . They wanted Creutz to help get it operational . He later recalled : 
 Wigner moved to Princeton University in 1938 , and soon after Creutz received an offer as well . Princeton <a href='been_done' title='1'><mark>had</mark></a> been given a 36 @-@ inch ( 910 mm ) magnet by the University of California , which <a href='been_done' title='2'><mark>had</mark></a> been used to build an 8 MeV cyclotron . They wanted Creutz to help get it operational . He later recalled : 
Wigner moved to Princeton University in 1938 , and soon after Creutz received an offer as well . Princeton done been given a 36 @-@ inch ( 910 mm ) magnet by da University of California , which done been used to build an 8 MeV cyclotron . They wanted Creutz to help get it operational . He later recalled :