Measuring Light (IMAGE) University of Wyoming Caption From left, Subash Kattel, a University of Wyoming graduate research assistant, and Bill Rice, a UW assistant professor of physics and astronomy, use a combination of tunable, wavelength lasers and variable magnetic fields to show how spin-current-based devices can be used to measure light across a broad spectrum of wavelengths. Credit Joshua Walker 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.