National Museum of Nuclear Science & History
Joseph Hirschfelder was an American physicist. He held doctorates in physics and chemistry from Princeton University.
Herbert M. Parker (1910-1984) was a British-American medical physicist. He worked at Chicago, Oak Ridge, and Hanford during the Manhattan Project, and is perhaps best known for inventing the rep (a precursor of the rad) and helping develop the rem to measure radiation dosage.
