Second Sound in a Quantum Gas (IMAGE) University of Innsbruck Caption The cigar-shaped particle cloud is locally heated with a power-modulated laser beam (green). Credit IQOQI/Ritsch 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.