Conducted at what is now Case Western Reserve University was, for 10 points, what doubly-eponymous experiment that disproved the idea of luminiferous ether?
The Fitzgerald-Lorentz hypothesis was falsified, and the Sagnac Effect was discovered in two experiments that built upon this experiment. The main apparatus was placed on a large marble block that was then floated in a pool of mercury. This experiment began when a single source of white light was sent out through a half-silvered mirror that was used to split the light into two beams travelling at right angles to one another. Conducted at what is now Case Western Reserve University was, for 10 points, what doubly-eponymous experiment that disproved the idea of luminiferous ether?
The Fitzgerald-Lorentz hypothesis was falsified, and the Sagnac Effect was discovered in two experiments that built upon this experiment.
Michelson-Morley Experiment