Periodic Rotation (IMAGE) Deutsches Elektronen-Synchrotron DESY Caption These are the different stages of the molecule's periodic rotation repeat after about 82 picoseconds. Credit DESY, Evangelos Karamatskos/Britta Liebaug Usage Restrictions May be used free of charge in context with the PR. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.