Abu as-Salt
Abū aṣ-Ṣalt Umayya ibn ʿAbd al-ʿAzīz ibn Abī aṣ-Ṣalt ad-Dānī al-Andalusī (Arabic: أبو الصلت) (c. 1068 — 23 October 1134), known in Latin as Albuzale, was an Andalusian-Arab polymath who wrote about pharmacology, geometry, Aristotelian physics, and astronomy. His works on astronomical instruments were read both in the Islamic world and Europe.