Can LIGO Data Replicate the Famous Michealson & Morley Experiment?

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The discussion explores the feasibility of replicating the Michelson-Morley experiment using LIGO data, noting that while the geometry is similar, LIGO is designed for high-frequency gravitational wave detection. Concerns are raised about whether LIGO's data filtering excludes lower frequency signals that could reveal motion through the ether, which would require long observation times. The stability of LIGO for such experiments is questioned, as continuous operation is hindered by environmental factors like earthquakes and Earth tides. Ultimately, it is suggested that replicating the Michelson-Morley experiment with LIGO is both impractical and unnecessary, as the original experiment already demonstrated the absence of detectable effects. The conversation concludes that any potential advancements from LIGO may not be achievable within the limitations of terrestrial systems.
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Would it be possible to duplicate the Michealson & Morely experiment using LIGO data?

Essentially the geometry seems to be the same , so I was wondering whether it would be possible verify the M&M result at a much higher resolution using existing LIGO data or is the stability not designed to work at long enough time scales? Maybe the data is pre-filtered to only keep relatively high frequency data.

Maybe the
 
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LIGO is essentially a form of Michelson & Morley experiment. Instead of looking for a continuous ether traveling in a single direction, LIGO is looking for brief (and extremely small) changes in spacetime between the two paths due to the passing of a gravitational wave.

More information on LIGO's Interferometer.
LIGO's interferometer is classified as a Dual Recycled, Fabry-Perot Michelson Interferometer.
 
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yes, I realize that , that is why I asked the question.

The questions is more about the data interferometer than about the interferometer. Since they are focussed on relatively high frequencies , they may have filtered out anything long enough to inform about motion through the ether. I guess that would require very low frequencies 0.16 per hour max. preferable one per day.

I suspect the machine has not been designed to provide that kind of stability.
 
There is no need to build a more accurate MM experiment. The few people who are not convinced by the existing data will not be convinced by this.

Running LIGO for a year continuously, because of events like earthquakes, is impossible. There used to be problems with Earth tides as well, I don't know if these were solved or not. They are more predictable.

So, it's both impossible and unnecessary, which explains why it doesn't happen.
 
It is not a case of convincing anyone who is not convinced. MM proved that there was not a detectable effect within the limits of their apparatus. Anyone who is "convinced" of more than that is not being scientific.

IIRC, MM was only a couple of meters long on each leg. If LIGO is capable of adding a couple of orders of magnitude to what was done over 100y ago , it would be interesting. But maybe it is not possible within the constraints of an earthbound system.
 
fizzy said:
It is not a case of convincing anyone who is not convinced. MM proved that there was not a detectable effect within the limits of their apparatus. Anyone who is "convinced" of more than that is not being scientific.

IIRC, MM was only a couple of meters long on each leg. If LIGO is capable of adding a couple of orders of magnitude to what was done over 100y ago , it would be interesting. But maybe it is not possible within the constraints of an earthbound system.
I'm quite sure Vanadium meant what he wrote - that is the existing data, all of it, and not just the original M&M experiment.
See here:
http://math.ucr.edu/home/baez/physics/Relativity/SR/experiments.html#round-trip_tests
 
Thanks Bandersnatch, nice resume.
 
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