Animated explainer video (VIDEO) University of Göttingen This video is under embargo. Please login to access this video. Caption This animated explainer video shows how the experiment was carried out by researchers at the University of Göttingen, Deutsches Elektronen-Synchroton (DESY) and the European X-Ray Free-Electron Laser (European XFEL). An infra-red laser beam is tightly focused into a water-filled container, igniting a plasma spark; the subsequent shock wave and cavitation bubble are imaged by an X-ray flash. From this, the density inside the bubble and the surrounding shock wave is computed. Credit Markus Osterhoff with voiceover by Dr Anne Pawsey Usage Restrictions None 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.