Invisibility Cloak (VIDEO) DOE/Lawrence Berkeley National Laboratory This video is under embargo. Please login to access this video. Caption This video shows how a beam of light is obstructed by an object in a flat surface and casts a shadow until the object is cloaked, at which point the light is reflected as if the surface were still perfectly flat. Credit Video by Jensen Li 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.