Laser Hits Material (IMAGE) California Institute of Technology Caption A strong laser is seen illuminating a material in a low-temperature chamber. The laser is being used to change the material's degree of transparency. Credit Caltech/David Hsieh Laboratory Usage Restrictions Please use credit. License Original 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.