'Madonna in Preghiera' (image) Georgia Institute of Technology Share Print E-Mail Caption "Madonna in Preghiera" by the workshop of Giovanni Battista Salvi da Sassoferrato. The painting was studied using a terahertz reflectometry technique. Credit Courtesy of Alexandre Locquet Usage Restrictions None 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.