8 ms·
> That's why I'm siding on the LIGO side of this Are you sure? Because then you must accept that c≠const, thus Ether exists.
by v_lisivka 8y ago
> That's why I'm siding on the LIGO side of this
Are you sure? Because then you must accept that c≠const, thus Ether exists.
- raverbashing 8y agoI don't remember anything being discussed on that area based on LIGO data
- kryptiskt 8y agoNo, I don't have to accept that, because I already know from my undergraduate physics that light doesn't travel at c in a medium.
- v_lisivka 8y agoLIGO measurements are performed in ultra-high-vacuum[0], so it's not a "speed of light in a medium" it's "speed of light in the vacuum", AKA c. [0]: https://www.ligo.caltech.edu/page/vacuum https://www.ligo.caltech.edu/page/vacuum
- v_lisivka 8y agoAdmins, it looks like I have personal haters. Can you fix this, please?
- gliptic 8y agoThere's a much more reasonable explanation for the downvotes. You're making a very dubious claim without even trying to back it up.
- v_lisivka 8y agoNobody of downvoters asked for anything nor contested my arguments. English is not a my native language and I'm busy right now, so I prefer to be concise. Basically, LIGO is oversized and much more precise version of Michelson-Moorley experiment. What else I need to show you or tell you to convince? Everybody already know role of Michelson-Moorley experiment in development of GR/SR theories. Michelson-Moorley experiment was performed with precision of up to 1E-17 and found nothing, so it was reasonable to post theories assuming that c=const. LIGO performed with precision of 1E-18 and found deviations, so it no longer true unless LIGO is wrong (distance to Alpha Centaur is just 4E16 meters, so it's possible), so it's why I asked "are you sure?".
- kurthr 8y agoIt's not the "ether" that's changing the phase, it's the relative length of the interferometer legs. That depends on the direction the waves come from.
- v_lisivka 8y agoI already responded to another comment with similar question. You can also check White-Juday experiment: https://en.wikipedia.org/wiki/White%E2%80%93Juday_warp-field_interferometer https://en.wikipedia.org/wiki/White%E2%80%93Juday_warp-field...
- jschwartzi 8y agoLIGO is what is called a "Michelson Interferometer" because the same interfereometer was used in the Michelson-Morely experiment. However where Michelson and Morley were rotating their interferometer with fixed-length arms and monitoring the interference pattern to detect the orientation of the luminiferous ether, LIGO is using shifts in the relative distance of the arms to detect changes in the "size" of space due to gravitational waves. The speed of light doesn't vary, but rather my understanding is that the entire distance metric perpendicular to the wavefront compresses and expands. So light moves at the same rate through this compressed and then expanded space, but if you assume that the distance metric is constant then light will appear to speed up or slow down.
- Intermernet 8y agoUltra high vacuum isn't vacuum. Achieving an actual vacuum is practically impossible in my understanding. Even in deep space you will probably have a few stray hydrogen atoms floating around.
- v_lisivka 8y agoYes, this is problem, but two 200W lasers[0] separated by thousands of kilometres are able to filter out noise created by atoms or electrons easily. Moreover, 200W of energy applied to single atom will put away it from path of laser very quickly. At such powers and precision we may need to take into account flow of neutrino. It's possible that distant event created blast of neutrinos, which affected speed of light in vacuum. [0]:https://www.ligo.caltech.edu/page/laser https://www.ligo.caltech.edu/page/laser