Sainte Chappelle (image) Penn State Share Print E-Mail Caption Penn State researcher John Mauro snapped this photo of Sainte-Chapelle while vacationing in France. Mauro's recent research shed light on the glass transformation of medieval windows. Credit John Mauro, Penn State Usage Restrictions Non commercial use only Share Print E-Mail 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.