Water (image) Helmholtz-Zentrum Berlin für Materialien und Energie Share Print E-Mail Caption Water molecules are excited with X-ray light (blue). From the emitted light (purple) information on H-bonds can be obtained. Credit T. Splettstoesser/HZB Usage Restrictions None Share Print E-Mail 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.