Hi all, In another forum, I've been exploring the idea of an experiment to demonstrate what has been referred to as 'reciprocity' in SR. That is, the mutual observation of time dilation by two observers with relative velocity(Bob says Mary's clock is dilated while Mary says Bob's clock is dilated). The motivation for this is the claim by some that it is physically impossible for this to occur. I of course disagree. However, on looking for evidence of this, including questions submitted to NASA, Cornell, et al, to my amazement, there appears to be no experiment that demonstrates this. A key feature of the proposed experiment is the use of a long-radius centrifuge. The timing apparatus will experience approx. 25g constant acceleration. The question is, from the frame of the rotating clock (and the clock at the center) can I expect time dilation based solely on the clocks relative speed (gamma) or must I incorporate GR time dilation effects since acceleration is involved? Thanks.