Dark State Molecule (VIDEO) University of Vermont This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption When the rotor molecules are in a thin a solution, they vibrate more easily -- making a full rotation -- and so they release energy as heat instead of light, as shown here. This is called the "dark state." Credit Morgan Cousins and Matt Liptak Usage Restrictions with coverage of associated article 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.