David
Zvi
Kalman
![](https://katz.sas.upenn.edu/sites/default/files/styles/profile_image/public/2019-07/kalman%2C%20David%20Zvi%20Photo.jpg?itok=-U33SGpz)
University of Pennsylvania
Bio
David Zvi Kalman is a scholar of medieval Islamic law and culture, history of technology, Jewish law and culture, legal theory, and material culture.
Kalman received his PhD from the University of Pennsylvania with a dissertation titled “Unequal Hours: The Jewish Reception of Timekeeping Technology from the Bible to the Twentieth Century.”