Abstract: Escorial, Real Biblioteca del Monasterio de San Lorenzo, MS O.II.10 belonged to Jean des Murs and displays numerous autograph annotations. Amongst these notes, a text copied on a blank leaf was circulating in Paris in the second half of the fourteenth century. It relates to the motion of the eighth sphere and its influence on the length of the solar year. This article discusses this short treatise and provides an edition based on the two manuscript witnesses, as well as an English translation.
CLIL theme: 4027 -- SCIENCES HUMAINES ET SOCIALES, LETTRES -- Lettres et Sciences du langage -- Lettres -- Etudes littéraires générales et thématiques
EAN:9782406127079
ISBN:978-2-406-12707-9
ISSN: 2273-0893
DOI: 10.48611/isbn.978-2-406-12707-9.p.0329
Publisher: Classiques Garnier
Online publication: 01-12-2022
Periodicity: Biannual
Language: English
Keyword: Medieval astronomy, Calendar, Tropical year, Astronomical tables, Eighth sphere, Jean des Murs, Johannes de Wasia, University of Paris, Collège de Sorbonne
