Kevin Houser, Penn State (IMAGE) Penn State Caption Kevin Houser, Professor of Architectural Engineering at Penn State, sorts cards in a light box in the departments illuminating engineering lab for observation under several light sources. Credit Patrick Mansell, Penn State Usage Restrictions Non commercial use only 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.