Browsing by Subject "Ptolemy"
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Guillaume des Moustiers treatise on the armillary instrument (1264) and the practice of astronomical observation in medieval Europe
(2021)This article is devoted to a thirteenth-century Latin text on how to construct, set up, and use a version of the so-called armillary instrument (instrumentum armillarum), which was first described in Ptolemy’s Almagest as ... -
A Thirteenth-Century Latin List of Ptolemaic Coordinates
(2022)This article makes the argument that a Latin table of geographic coordinates, copied in Italy in the second half of the thirteenth century (MS Florence, Biblioteca Medicea Laurenziana, Ashburnham 211, fol. 260r), is derived ...