Samuel Untermyer II

Samuel Untermyer II, (25 November 1912 – 26 January 2001) was a United States nuclear scientist who theorized that steam bubble formation in a nuclear reactor core would not produce unstable reactions, but would instead result in an inherently stable and self-controlling reactor design. This was eventually proved in the BORAX experiments, which led to the design of the Boiling water reactor. In recognition of his fundamental development work on water-cooled reactors, the American Nuclear Society now has an award named after him for work in this field.

He was awarded the Newcomen Medal in 1980.