Death of Edward Mills Purcell (American physicist), March 7. Edward Mills Purcell was a prominent American physicist known for his work in nuclear physics and nuclear magnetism. Born in 1912, he spent much of his academic career at Harvard University. In 1946, Purcell, together with Felix Bloch, discovered nuclear magnetic resonance (NMR), a breakthrough that had a profound impact on medical and chemical sciences and later led to the development of magnetic resonance imaging (MRI) technology. Purcell was awarded the Nobel Prize in Physics in 1952 for the discovery of NMR. This achievement enabled more precise study of molecular structures and paved the way for further advances in various scientific fields. He also made significant contributions to astrophysics, particularly in the study of interstellar hydrogen radiation. Edward Mills Purcell passed away on March 7, 1957. His legacy is often commemorated in scientific and academic circles, and his work continues to influence the teaching and research of physics and related technologies. The inclusion of this date in the Gregorian calendar was made to honor his contributions to the advancement of science and technology.