The experiment that dispelled the idea that light travels in the ether is called the
A)Michelson-Morley experiment.
B)Hafele and Keating experiment.
C)Fitzgerald-Kennedy experiment.
D)twin paradox.

Question

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The Michelson-Morley experiment was designed to measure the speed of the Earth's motion through the ether, but the results showed that there was no ether and that light travels at a constant speed in all directions. This helped to confirm Albert Einstein's theory of relativity and revolutionized our understanding of the nature of light and the universe. The Hafele and Keating experiment confirmed the effects of time dilation predicted by the theory of relativity, and the Fitzgerald-Kennedy experiment provided additional evidence for the absence of the ether, but neither of these experiments were directly related to the nature of light itself. The twin paradox is a thought experiment that explores the consequences of time dilation, but it does not directly address the properties of light.

The Experiment That Dispelled the Idea That Light Travels in the Ether