The sound of Hagia Sophia was recreated recently by two scholars from California’s Stanford University by simply popping a balloon. Bissera Pentcheva, a professor of art history, has published a book on the subject titled “Hagia Sophia: Sound, Space, and Spirit in Byzantium.” Pentcheva’s work is focused on the appreciation of medieval art and architecture, […] Read the full story on GreekReporter.com.