Islamic Science and the West

[Paul Ferguson]

"Details of Adelard’s journey to and from the Near East are scarce, although scattered hints can be gleaned from his writings. We do not know where, or to what extent, he mastered Arabic, and the identity of his teachers largely remains a mystery. At one point, he tells us he ended up in the Crusader principality of Antioch, where he experienced a major earthquake that modern science has dated to November 29, 1114, about five years after Adelard first set out on his travels. He would later return home dressed in his adopted green cloak and turban and armed with such treasures as the geometric system of Euclid; detailed tables of the movements of the stars; a manual on the use of the astrolabe, a powerful computing device invented by the Greeks and perfected by the Arabs; and a book of alchemical recipes for tinting glass, dyeing leather, and performing other chemical processes."

https://renovatio.zaytuna.edu/article/is...ve-amnesia