Arthur Holly Compton was born on 10 September 1892 in Wooster, Ohio, into an academically distinguished family; his father was a philosophy professor and dean, and his brothers would later become prominent university presidents. He studied at the College of Wooster, earning his Bachelor of Science in 1913, before moving to Princeton University, where he completed his M.A. in 1914 and Ph.D. in 1916. After a brief period teaching physics at the University of Minnesota, he worked as a research engineer at the Westinghouse Lamp Company, gaining practical experience in applied physics before spending a year at Cambridge University as a National Research Council Fellow.

Compton’s academic career advanced rapidly. In 1920, he became Wayman Crow Professor of Physics and head of the physics department at Washington University in St. Louis, and in 1923 he moved to the University of Chicago, where he conducted the ground-breaking research that defined his scientific legacy. His most famous contribution was the discovery of the Compton effect, demonstrating that X‑rays scatter off electrons like particles rather than waves. This finding provided crucial evidence for quantum theory and earned him the 1927 Nobel Prize in Physics. His work also extended to cosmic rays, where he helped show that they include positively charged particles.