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Esclangon found that the vertical angle of light travelling along & back inside a horizontal telescope (reflecting back off 2 mirrors fixed on its end) varied by up to 0.08 arcsec (ave max 0.036 arcsec) depending on (1) the orientation of the telescope relative to the stars, & (2) the sidereal time of day.
Quote from: mad aetherist on 26/01/2019 00:21:16Esclangon found that the vertical angle of light travelling along & back inside a horizontal telescope (reflecting back off 2 mirrors fixed on its end) varied by up to 0.08 arcsec (ave max 0.036 arcsec) depending on (1) the orientation of the telescope relative to the stars, & (2) the sidereal time of day. The folks setting up things like LIGO and this sort of thinghttps://en.wikipedia.org/wiki/Very-long-baseline_interferometry did not find such an effect- even though their equipment was much more sensitive. Which strongly indicates that the original observation was an error. Do we know the details of M Esclangon's experimental apparatus?
Quote from: Bored chemist on 27/01/2019 18:33:00Quote from: mad aetherist on 26/01/2019 00:21:16Esclangon found that the vertical angle of light travelling along & back inside a horizontal telescope (reflecting back off 2 mirrors fixed on its end) varied by up to 0.08 arcsec (ave max 0.036 arcsec) depending on (1) the orientation of the telescope relative to the stars, & (2) the sidereal time of day. The folks setting up things like LIGO and this sort of thinghttps://en.wikipedia.org/wiki/Very-long-baseline_interferometry did not find such an effect- even though their equipment was much more sensitive. Which strongly indicates that the original observation was an error. Do we know the details of M Esclangon's experimental apparatus?Fixed experiments turn at 1 rpd, hencely any such slow small gradual changes due to any changing LAC etc of mirrors & lenses & lasers & pipelines & tunnels etc are probly not a worry for LIGO, they tend to worry about things that change at say 8,640,000 rpd like their chirps.However contrary to what u said i say that LIGO did find such an effect, thats why LIGO uses curved mirrors. Flat or flattish mirrors would allow them to use say 1/1000th the wattage, & would reduce their main problem which is temperature. Its the elephant in their tunnel, but sshhhhhhh -- hey everyone look over there, its a blackhole.Plus their mirrors are as big as they can make them. Thats because a fixed laser beam draws a big ellipse during a day, so even if flat the mirrors would have to be big. LIGO of course would have an Einsteinian excuse for that big ellipse (Einsteinians have an almost limitless menu of relativistic magical corrections)(if need be they even resort to breaking their own original postulates).
i say that LIGO did find such an effect, thats why LIGO uses curved mirrors. Flat or flattish mirrors would allow them to use say 1/1000th the wattage,
Wow! It's as if you have discovered gravity or tides or something.
Quote from: mad aetherist on 27/01/2019 20:21:53 i say that LIGO did find such an effect, thats why LIGO uses curved mirrors. Flat or flattish mirrors would allow them to use say 1/1000th the wattage,[/b][/color]Would you like to expand on that.
i say that LIGO did find such an effect, thats why LIGO uses curved mirrors. Flat or flattish mirrors would allow them to use say 1/1000th the wattage,[/b][/color]