Physicist. While studying the creation of artificially radioactive isotopes in the 1930s, Fermi became the first physicist to split the atom and was awarded the Nobel Prize for Physics in 1938 for his developments in harnessing nuclear power. He is considered one of the most important architects of the nuclear age. Vintage ink signature, “Enrico Fermi, Chicago,” on an off-white 4.5 x 3.5 card, dated June 12, 1951. In fine condition, with a bit of trivial soiling to card. R&R COA.