 channel for physics please subscribe my channel hello and welcome back to another episode of physics partner today we are going to discuss a very interesting experiment named as michelson-mourley experiment michelson-mourley experiment was a classical experiment performed in late 19th century that disproved the existence of ether a mysterious substance formerly thought to permeate the universe and through which light waves were believed to propagate the experiment was part of the intellectual groundwork of einstein relativity theory the michelson-mourley experiment was an attempt to detect the existence of luminiferous ether a supposed medium per meeting space that was thought to be carrier of light waves the experiment was performed between april and july 1887 by american physicist elbert a michelson and adward w mortley let's see the virtual lab of this experiment according to michelson experiment theory the light should travel at different speeds through ether the speed at which light moves depend on the relative motion through space michelson-mourley design an interferometer to spot the minute difference in the arrival time of light beams out of all beams one can take a long time to reach the sensor while traveling through ether the experiment performed compared the speed of light to notice the relative motion of earth through ether however the conclusion of the michelson-mourley experiment comes out to be negative it means that they found no difference between the speed of light while traveling through ether same like michelson-mourley different experiments have been repeated many times with a steadily increasing sensitivity these include experiments from 1902 to 1905 and a series of experiments in the 1920s more recently in 2009 optical resonator experiment performed the absence of any ether wind at the 10 to 17 level so that's all for today and i hope you enjoyed the video i hope this video is useful for you feel free to compose an email for suggestions recommendation critic even support and class needed thank you very much for your listening take care of yourself see you in the next video goodbye