Albert A. (Albert Abraham) Michelson

Born on December 19, 1852, in Strzelno, Prussia, Albert A. Michelson came to the United States as a small child and grew up in mining towns in the American West. He studied at the U.S. Naval Academy, where he began the work that would make him famous: using ingenious instruments to measure light with remarkable accuracy.

Michelson is especially remembered for his measurements of the speed of light and for the Michelson interferometer, a tool that transformed precision physics. His collaboration with Edward W. Morley on the Michelson–Morley experiment became one of the most famous experiments in the history of science. In 1907, he received the Nobel Prize in Physics, becoming the first American honored with a Nobel in the sciences.

He later taught at institutions including the University of Chicago and remained a leading figure in experimental physics for decades. Michelson died in 1931, but his work still stands at the heart of how scientists think about light, measurement, and the physical world.