The Michelson–Morley experiment was conducted in 1887 in the collaboration of the Nobelists and his colleague Edward Williams Morley. They investigated the expected motion of the Earth relative to the aether, the hypothetical medium in which light was supposed to travel, resulting in a null result. Michelson continued with the experiment and repeated it more precisely but he could not find the ability to measure the aether. 

However, the Michelson–Morley results were immensely influential in the physics community, leading Hendrik Lorentz to devise his now-famous Lorentz contraction equations as a means of explaining the null result.

The experiment also influenced the affirmation attempts of peer Albert Einstein's theory of general relativity and special relativity, using similar optical instrumentation. These instruments and related collaborations included the participation of fellow physicists Dayton Miller, Hendrik Lorentz, and Robert Shankland.

 

Check the video with the explanation of the experiment below ⤵️