Headfarm: A Discussion on Globes, Pointers, Stones
Friday, February 25th, 2011
Determing the circumference of the earth by measuring the different angles of a star appearing above Bale and Cologne. Sebastian Münster, Cosmographia (Basel: Henricus Petrus, 1544), Zentralbibliothek Zürich, Alte Drucke und Rara, Res 121, p. 5.
