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Forums
Physics
Special and General Relativity
Gravitational Waves Vs. Aether Wind
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[QUOTE="pervect, post: 5497082, member: 14402"] The Michelson Morely inteferometer was designed to keep the distance between the mirrors in its arms constant. The mirrors were not allowed to move relative to the rigid frame of the interferometer, but rigidly attached to the rigid frame. . The mirrors on the Ligo interferometer are not attached to the frame. They're attached to test masses, which are [S]levitated[/S] suspended to support the mirrors against Earth's gravity, but are otherwise free to "slide around". One of the challenges of the design is to isolate the test masses so that other enviromental influences other than gravity waves cause as little motion as possible. There are no test masses in the Michelson morely interferometer - the mirrors are attached to the frame of the interferometer directly. [add]There are some details on the final stage of the suspension system for advanced ligo (aLigo) at [URL]https://www.advancedligo.mit.edu/sus.html[/URL]. Basically, there is a multiple-pendulum system (three to four pendulums). There is some sort of possible active "sesmic isolation system" [SEI] in addition - the pendulums are hung from the sesmic isolation system. I haven't found any details on the SEI though.. [/QUOTE]
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Special and General Relativity
Gravitational Waves Vs. Aether Wind
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