Octocontrabass wrote:I don't see how you go from "special relativity only applies in special circumstances" (inertial frames of reference) to "there must be one frame of reference superior to all others".
In situations where light is travelling at c, if you have any circumstance in which a pules of light is moving at a speed other than c relative to an object/observer, you necessarily have absolute speeds.
You do realize "observer" refers to the piece of the experimental apparatus that measures the difference in the speed of light via interference patterns and not the person looking at those measurements, right?
An observer can be any observer, such as a piece of machinery sitting beside the ring and not going round with it - that becomes part of the experimental apparatus measuring the difference. You're trying to rule out the valid observers that make inconvenient findings, and you're doing so to try to defend a broken theory which those observations show to be broken. Classic case of theory-induced blindness in action again: you ignore heretical measurements and only accept those that conform to the ideology.
But it always takes the same amount of time to travel a distance equal to the circumference of the ring.
Yes. The same applies to a ship moving past you: it always takes light the same length of time to travel the distance of the length of the ship, but it still takes it less time to pass the ship in one direction than the opposite direction. The relative speeds are different.
...Huh? No, light is moving at c relative to the inertial frame of reference, and it moves at c relative to every inertial frame of reference. How does that show absolute speeds?
It moves at speeds other than c relative to the material in the ring sections that it's passing through, which means that that material has non-zero absolute speeds. You wouldn't have a problem understanding this with sound going round a rotating ring, so why do you trip up on it when it's light doing it? Theory-induced blindness again: you just can't bring yourself to accept anything that shows the model to be broken.
DavidCooper wrote:Fans of STR will assert that you have to switch to GTR to account for the action here because it involves acceleration,
A common mistake. Physicists who regularly work with relativity (and anyone who spends some time reading Wikipedia) can tell you the twin paradox also exists in a scenario with no acceleration and therefore no general relativity.
I find qualified experts on both sides of that one. Some understand that it can run without any accelerations and that STR should be able to handle it, but just as many don't understand that and try to defend the model by pointing to the accelerations, even after you've shown them a version that doesn't have any.
Now do it again, but from the perspective of clock D instead of clock A. Clock D sees clock A approaching at 0.866c and clock C approaching at 0.9897c, and it knows that they're both set to 0 when they pass each other. Clock C will arrive first, showing the time that passed since it synchronized with clock A. Clock D then measures the amount of time between the arrival of clock A and clock C. You get the same result! How can that be? If there's an absolute frame of reference, you should get the wrong result if you assume the wrong clock is stationary.
Why do you imagine that you'd get a different result? You can run the same experiment with sound clocks in air in a wind tunnel with clocks C and D moving at 86.6% the speed of sound and clock A at rest in the air. If you then assume clock D is at rest and use frame D for your calculations, you'll get the exact same predictions about the timings on the clocks whenever they pass other clocks. That's the phenomenon of apparent relativity which works the same way in both cases (light and sound), though you have to keep the sound clocks aligned vertically or use special ones which contract under the governance of s (the speed of sound) instead of c). And changing to a different air speed in the wind tunnel makes no difference to those measurements.
In my double twins paradox thought experiment [url]magicschoolbook.com/science/double-twins-paradox.html[/url] (some of these fail to turn into links, perhaps because I'm using free hosting which comes and goes, but it should still be possible to get through to them with a bit of patience) you can see that changing frame doesn't change the measurements. It starts in mode 1 which shows event-meshing failures in STR. If you switch to mode 2 you get a different version of STR in which absolute time has been smuggled in to cause some proper times to tick slow under the governance of that absolute time, though it switches to a different absolute time every time you change frame, so it needs an infinite number of absolute times. In mode 3 you see what happens when there is only one absolute time, and this is LET. Mode 1 shows STR breaking on event-meshing failures, while mode 2 shows it breaking by generating contradictions. If you freeze the action in mode 2 with the counter at a value such as 360 or 550, you can then change frame by clicking on the "+" or "-" button and then hold down the enter/return key to repeat the action many times, and then you can watch the frozen action demonstrate that it isn't so frozen, because it makes some events that have happened unhappen while other events that haven't happened yet suddenly happen. This is similar to mad physicist in the rocket saying "the alarm has sounded; the alarm hasn't sounded yet". This is one of the many ways to show that STR is incompetent and has no place in proper science.
This is the twin paradox again.
It's similar enough to it that they can count as the same disproof.
Modern aether theory and special relativity both insist on something that is impossible to prove or disprove. Modern aether theory insists on the presence of some undetectable medium through which light propagates. Special relativity insists that the speed of light is constant and symmetrical to all inertial observers. Which of those is more similar to your flying spaghetti monster example?
STR generates contradictions, so if you're to tolerate those you depend on magic to overturn the impossibility that those contradictions reveal. LET doesn't generate contradictions, so it doesn't depend on magic, while the space fabric that it reveals must exist is also required to provide essential services which we know exist and which cannot be provided by nothing. There is no contest: STR is junk, but LET remains viable.
You have so far failed to demonstrate any contradictions.
I've shown you plenty of them, but theory-induced blindness prevents you from seeing them because you don't want there to be contradictions, and no amount of contradictions is good enough for you to accept that they are contradictions. The alarm has sounded; the alarm hasn't sounded yet; the alarm has sounded; the alarm hasn't sounded yet. Identifying contradictions of that kind doesn't trouble any competent mathematician, but the ones who are also physicists and who have bought into STR allow theory-induced blindness to prevent them from recognising these contradictions. What do they do when you press them on this point? They try to wriggle away: "the assertions aren't valid because there's no such thing as simultaneity at a distance" is the usual response, but mathematics still insists that half the claims must be false, so for equal validity of all frames, all of them have to be false, which still renders the theory incompetent.
Which experiments?
The twins paradox, MGP, the light pulses from the two ships, the light pulse moving from one object to another all moving along the same straight line at different speeds where the relative speed of the light to the objects cannot be c for both of them, etc.
The person providing them is apparently of great relevance, since you trust them more than you trust all of modern physics.
It's the experiments that disprove STR. They could be passed to you by the village idiot and their validity isn't affected at all.
How do you know you aren't doing the same thing?
Because I go by what mathematics says about the experiments while they go against what it says.