Astronomy Cast Ep. 368: Searching for the Aether Wind: the Michelson–Morley Experiment

By Fraser Cain - February 17, 2015 at 3:55 PM UTC | Physics

Waves move through a medium, like water or air. So it seemed logical to search for a medium that light waves move through. The Michelson-Morley Experiment attempted to search for this medium, known as the "luminiferous aether". The experiment gave a negative result, and helped set the stage for the theory of General Relativity.

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Fraser Cain

Fraser Cain

Fraser Cain is the publisher of Universe Today, founding the website in March 1999. He's also the co-host of Astronomy Cast.