Broad interests in the physical sciences (and their analogues and contexts) before 1700. Primary research interests focus on late medieval natural philosophy and astronomy, with special attention to the Viennese tradition and most specifically, of late, the work of Johannes Regiomontanus. Additional related interests: science and the medieval university, science and early printing, and Piero della Francesca.
Ph.D., Harvard University, History of Science, 1983
A.M., Harvard University, History of Science, 1978
M.A., University of Notre Dame, History and Philosophy of Science, 1975
B.A., Goshen College, Physics, 1971
- “The Geometrical Diagrams in Regiomontanus’s Edition of his Own Disputationes (c. 1475): Background, Production, and Diffusion,” Journal for the History of Astronomy 43 (2012), 27-55.
- “”Piero’s Flagellation of Christ Elucidated?” essay review of David King, Astrolabes and Angels, Epigrams and Enigmas: From Regiomontanus’s Acrostic for Cardinal Bessarion to Piero della Francesca’s Flagellation of Christ,” Journal for the History of Astronomy 42 (2011), 391-403.
- “Regiomontanus as a Physical Astronomer: Samplings from the Defence of Theon against George of Trebizond,” Journal for the History of Astronomy 28 (2011), 325-349.
- “Setting Up Copernicus? Francesco Capuano da Manfredonia’s Expositio on the Sphere of Sacrobosco,” Early Science and Medicine 14 (2009), 290-315.