P. W. (Percy Williams) Bridgman

Born in Cambridge, Massachusetts, in 1882, Percy Williams Bridgman studied at Harvard and remained closely tied to the university throughout his career. He became one of the leading experimental physicists of his time by designing new equipment that allowed scientists to investigate how materials behave under very high pressures.

That work helped establish the field of high-pressure physics and earned him the 1946 Nobel Prize in Physics. Beyond the laboratory, Bridgman was also known for his interest in the meaning of scientific ideas; his writing on operational thinking influenced discussions in both physics and philosophy.

He died in 1961, leaving behind a body of work that connected careful hands-on experimentation with big questions about how science understands the world.