[6] After the death of his wife in 1992, Hill never remarried but would then move to Rochester, where he met Sharon Vincent, his partner with whom he would spend the rest of his life.

He disassembled a Model T and reassembled it inside the dorm room of one of his friends as a prank, with the help of his closest colleagues.

He was a chair at a social committee, whilst possessing the most class hours with the highest grade point average.

After graduating from the California Institute of Technology in 1942, he joined Enrico Fermi's team at the Metallurgical Laboratory in Chicago, where he remained for the duration of the war.

In 1945 he was one of 70 scientists to sign the Szilárd petition asking President Harry Truman to warn the Japanese before the usage of the atomic bomb.

[12] He was an assistant professor at Vanderbilt University and then from 1954 to 1958 worked as a theoretical physicist at the Los Alamos National Laboratory.

[12][10] In 1953, Hill, a chairman for the Federation of American Scientists, criticized a speech by Lewis Strauss that defended his opposition to the shipping of radioisotopes to Norway in 1949.

[15] Hill spent the later part of his career working in the private sector, founding research and development companies including Nanosecond Systems Inc., a manufacturer of high-precision measuring equipment, and serving as president of Harbor Research Corp., a patent enforcement and investment company.

[11] In the article the physicists speak on the many concerns individuals have for the future of the world with the atomic bomb now present.

[24] The physicists either showed their support or disapproval for the proposed amendment from the American Physical Society (APS) constitution in their letters.