Ali ibn Khalaf
Alī ibn Khalaf(Arabic:علي بن خلف الأندلسي) was an Andalusian astronomer[1]who belonged to the scientific circle ofṢāʿid al- Andalusī.[2]
He devised, with help from al-Zarqali, the universalastrolabe.[3]Both Khalaf and al-Zarqali's design were included in theLibros del Saber(1227) ofAlfonso X of Castile.[4]
References
[edit]- ^Puig, Roser (2007). "ҁAlī ibn Khalaf: Abū al‐Ḥasan ibn Aḥmar al‐Ṣaydalānī".The Biographical Encyclopedia of Astronomers:34–35.doi:10.1007/978-0-387-30400-7_36.ISBN978-0-387-31022-0.
- ^Calvo, Emilia (22 September 2017). "Some Features of the Old Castilian Alfonsine Translation of ʿAlī Ibn Khalaf's Treatise on the Lámina Universal".Medieval Encounters.23(1–5): 106–123.doi:10.1163/15700674-12342244.
- ^David A. King,World-maps for finding the direction and distance to Mecca,(Brill, 1999), 330.
- ^Koenraad Van Cleempoel. "The Migration of Instrumental Knowledge from Flanders to Spain," in:Silent Messengers: The Circulation of Material Objects of Knowledge in the Early Modern Low Countries,Sven Dupré and Christoph Herbert Lüthy (eds.), (Transaction Publishers, 2011), p. 76.