Michelson

Part of speech: noun

Definitions

1. A physicist known for his work in optics and interferometry, particularly the famous Michelson-Morley experiment that sought to detect the presence of aether
2. An influential scientist recognized for his contributions to the field of physics, especially in the development of precision instruments and measures of light
3. A notable figure in the history of science, celebrated for his innovative experiments and their implications on the understanding of light and motion

Etymology: Albert Abraham Michelson was born in Prussia and taken to the American West as a child, and he later became a United States naval officer before turning to physics. His name now survives as a word in its own right, mainly as the surname attached to the instruments and experiments he devised. His most famous work was the interferometer, which splits a beam of light, sends the halves along paths at right angles, and recombines them to reveal tiny differences in travel time. With Edward Morley, he used it to test whether a supposed medium called the luminiferous aether carried Earth through space. The experiment found no detectable effect, a null result that became a key piece of evidence in the development of Albert Einstein's theory of relativity. Michelson received the Nobel Prize in Physics, becoming the first American to win a Nobel in science.