Nina Vaidya (IMAGE) Stanford University Caption Nina Vaidya measuring the experimental performance of optical concentrators under a solar simulator that acts as an artificial sun. Credit Courtesy Nina Vaidya Usage Restrictions Only for use for promoting this research. 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.