John Charonko, Virginia Tech (IMAGE) Virginia Tech Caption John Charonko, a member of the mechanical engineering faculy at Virginia Tech, is lead author on the paper, "Assessment of Pressure Field Calculations from Particle Image Velocimetry Measurements." Credit Virginia Tech Photo Usage Restrictions The photo of Dr. Charonko may be used with reports or discussion of his research. 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.