IBN AL-HAYTHAM ET LE MOUVEMENT D'ENROULEMENT. Issue 1 (March 2020)

• Record Type: Journal Article
• Authors: Rashed, Roshdi; Penchèvre, Erwan
• Is Part Of: Arabic sciences and philosophy. Volume 30:Issue 1(2020)
• Page Start: 27
• Page End: 137
• Publication Date: 2020-03
• Subjects: Learning and scholarship -- Arab countries -- History -- Periodicals; Science -- Arab countries -- History -- Periodicals; Philosophy, Arab -- History -- Periodicals; 181.92
• DOI: 10.1017/S0957423919000110
• Languages: English
• ISSNs: 0957-4239

Abstract

Abstract: In the Almagest, Ptolemy proposed the concept of winding motion, especially to explain planetary latitudes. Ibn al-Haytham (beginning 11th c.) wrote a treatise entitled Fī ḥarakat al-iltifāf, "Concerning the winding motion". An anonymous scholar wrote a refutation of this treatise. Both texts have been lost; but the answer of Ibn al-Haytham has survived: Fī ḥall šukūk ḥarakat al-iltifāf, "The resolution of doubts concerning the winding motion". There he reminds us of his model and gives us a more detailed explanation. We give here a critical edition, translation and commentary of this answer, as well as an edition and translation of some related excerpts from Ptolemy's Planetary Hypotheses and Quṭb al-Dīn al-Shīrāzī's Nihāyat al-idrāk (13th c.).