Pearl Spectrometer (IMAGE) Purdue University Caption Lustrous reflection from a pearl offers a concept of hybridizing material and digital properties for spectral information processing. Credit Purdue University/Chris Adam 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.