I have the following argument which responds to your points I believe. Optional:* Argument why rotating frames must experience time distortion under SR:* *Firstly we can observe that if the linear velocity of the rim of a rotating disk would have the observer on that disk see a light clock in a stationary frame be seen to take an angled path rather than a direct path between the mirrors, then we must assume his time is accelerated to see the longer path be C , or at least it will seem to be to him compared to the stationary frame. And when is motion perfectly linear in practice?*
Ok, so if a time contradiction (paradox) occurs between observers on the periphery of rotating disk and stationary observers, then this is very very different to the classic twin paradox. In the twin paradox the 2 observers are getting further apart, and as they do, there are issues with trying to compare their rates of time, but the main problem is that while the amount of time in discrepancy grows making the paradox grows, the issue of non-simultaneity at distance grows. These 2 grow in lock-step making us unable to use this as evidence against SR. But if we do this on a rotating frame, non-simultaneity has an upper bound that is quite small, and yet the amount of paradoxical time grows and grows to infinity if we do not end the experiment. Let each frame see 100 year pass in their frame and only 10 years or less for the other. How can this paradox exist when real time communication between the frames seems possible otherwise! Additionally what happens when it is ended? And another paradox exists, while always in view and appearing to be stationary, observers at zero and 180 degrees would actually be moving in opposite directions and expect great symmetrical time dilation, and while a light clock would 'appear' unaffected, we have established that if a time dilation exists between the stationary and rotating frame and a light clock in the center would always appear to be in view and unaffected in appearance then we know that we can't trust appearance if our view is changing. So the time dilation must be occurring at an even greater rate between opposite points on the rotating frame as the relative velocity is greater despite the fact that they can see each other. Other arguments that the opposite points on the disk would undergo time dilation relative each other, such as the time dilation changing from zero to huge based on subtle changes in motion (almost linear to perfectly linear to). John
