In today's world, Ali ibn Khalaf has become a topic of great relevance and interest to a wide spectrum of society. With the advancement of technology and globalization, Ali ibn Khalaf has become increasingly important in our daily lives. From its impact on the economy to its influence on culture and politics, Ali ibn Khalaf has become a recurring topic of discussion in different areas. In this article, we will explore the various dimensions and meanings of Ali ibn Khalaf, as well as its impact on our daily lives and its relevance in today's world.
Andalusian astronomer
Alī ibn Khalaf (Arabic: علي بن خلف الأندلسي) was an Andalusian astronomer who belonged to the scientific circle of Ṣāʿid al- Andalusī.
He devised, with help from al-Zarqali, the universal astrolabe. Both Khalaf and al-Zarqali's design were included in the Libros del Saber (1227) of Alfonso X of Castile.
^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.