On September 21, 1926, American physicist, molecular biologist, and Nobel Prize recipient Donald Arthur Glaser was born in Cleveland, Ohio, to Russian immigrant parents. He studied physics and mathematics at the Case Institute of Technology, earning his bachelor’s degree in 1946, then completed doctoral work at the California Institute of Technology, receiving his Ph.D. in physics and mathematics in 1950. His early research focused on cosmic rays and high-energy particles.
Glaser made his most celebrated contribution while a young faculty member at the University of Michigan. In 1952, he conceived the bubble chamber, a particle detector containing a superheated transparent liquid. When electrically charged particles passed through the liquid, they left trails of tiny bubbles along their paths. Those tracks could be photographed and measured, giving physicists a powerful way to observe particle collisions and identify previously unknown particles.
For inventing the bubble chamber, Glaser received the 1960 Nobel Prize in Physics at age 34. The Nobel Committee’s official citation was simply “for the invention of the bubble chamber.” The device became a landmark instrument in experimental particle physics, helping researchers study the behavior and interactions of high-energy particles.
Glaser later moved into molecular biology and biotechnology. In 1971, he joined Ronald E. Cape and Peter Farley in founding Cetus Corporation, an early biotechnology company established to apply emerging biological discoveries to medicine and agriculture. His career remains remarkable not only for a transformative invention in physics, but also for the breadth of his later scientific work.
Image via Wikimedia Commons, public domain.
