Test Device (IMAGE) Massachusetts Institute of Technology Caption A test device installed on a rooftop at MIT proved the effectiveness of the new insulating material. When placed in sunlight the device heated up to 220 degrees C., even though the outside temperature at the time was about zero degrees. Credit Lin Zhao Usage Restrictions Images for download are made available to non-commercial entities, press and the general public under a Creative Commons Attribution Non-Commercial No Derivatives license. You may not alter the images provided, other than to crop them to size. A credit line must be used when reproducing images. 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.