(Answered) The Michelson-Morley experimentMultiple Choiceproved that there is no luminiferous ether.proved…

➤ How did the Michelson interferometer measure motion relative to an ether?
The interferometer split a light beam into two perpendicular paths with a half-silvered mirror. Reflected beams recombined to form interference fringes. Any relative change in travel time from an ether wind would shift those fringes. Precise fringe measurements aimed to detect tiny optical path differences caused by motion through a proposed ether.