Necessary Inventions : Roger Bacon, the Middle Ages, and the Making of Modern Science
E. R. Truitt is Associate Professor in the Department of the History and Sociology of Science at the University of Pennsylvania. She is author of Medieval Robots: Mechanism, Magic, Nature, and Art and Necessary Inventions: Roger Bacon, the Middle Ages, and the Making of Modern Science, both of which are available from the University of Pennsylvania Press.