3-D Image of Trapped Gas in Pumice Sample (VIDEO) DOE/Lawrence Berkeley National Laboratory This video is under embargo. Please login to access this video. Caption VIDEO: This animation, produced from a series of X-ray microtomography images collected at Berkeley Lab's Advanced Light Source, shows a cube-shaped sample of pumice (blue-gray) and pockets of trapped gases (other colors). The animation also shows liquid (at 18 seconds) that surrounds the gases. Credit Berkeley Lab, UC Berkeley 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.