Pat Arnott, University of Nevada, Reno (IMAGE) University of Nevada, Reno Caption Physics professor Pat Arnott of the University of Nevada, Reno explains the new technology for photoacoustic air particle monitoring recently licensed by the University to Droplet Measurement Technologies. The device is used to measure air quality, including black carbon, in a number of applications. Credit Photo by Mike Wolterbeek, University of Nevada, Reno. 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.