Colorisation of a photograph of Enrico Fermi

Enrico Fermi (29 September 1901 – 28 November 1954) was an Italian physicist, best known for having built the Chicago Pile-1 (the first nuclear reactor), and for his contributions to the development of quantum theory, nuclear and particle physics, and statistical mechanics. He is one of the men referred to as the "father of the atomic bomb". Fermi held several patents related to the use of nuclear power, and was awarded the 1938 Nobel Prize in Physics for his work on induced radioactivity by neutron bombardment and the discovery of transuranic elements. He was widely regarded as one of the very few physicists to excel both theoretically and experimentally.

-- https://en.wikipedia.org/wiki/Enrico_Fermi