This is how it looks in practice: (IMAGE) University of Bonn Caption The different rotational directions of the various “dumbbells” indicate that the atoms lie in different planes. Credit Image: IAP/University of Bonn Usage Restrictions This image may be used together with the press release. License Original 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.