In this contribution, we analyze both the old Mössbauer experiments in a rotating system and our new experiment on this subject, which unambiguously indicate the presence of an additional component in the relative energy shift DE/E between emission and absorption lines, as compared with the classic relativistic expression written to the accuracy c-2 (that is DE/E=-u2/2c2, where u is the tangential velocity of absorber, and c the light velocity in vacuum). The additional dilation of time for the rotating absorber constitutes more than 20% from the relativistic value, and it many times exceeds the measuring uncertainty. We discuss a possible origin of this effect and the ways of its further experimental verification.
Key words: Relativistic dilation of time, rotating systems, Mossbauer effect.
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