Suhayl. Journal for the History of the Exact and Natural Sciences in Islamic Civilisation https://revistes.ub.edu/index.php/suhayl <p><em>Suhayl</em> is an annual journal (biennial between 2016-2021) published at the end of the year presenting contributions in English and Arabic in paper and electronic formats. Suhayl publishes original scholarly articles on the history of the natural and exact sciences in the Islamic and Islamicate world and their relationship with other cultural traditions. Its objective is to make available to the scientifc community the latest developments in the field and, in particular, unpublished original sources. The journal is aimed at all experts interested in ancient, medieval and pre-modern science, from an interdisciplinary perspective.</p> <p>We are currently transitioning from a previous website and older volumes will gradually be transferred from there: <span style="color: black !important; font-size: 12pt; font-family: Calibri, Helvetica, sans-serif, serif, EmojiFont;"><a id="LPlnk997280" href="https://raco.cat/index.php/Suhayl/issue/archive" target="_blank" rel="noopener noreferrer" data-auth="NotApplicable" data-linkindex="0">https://raco.cat/index.php/Suhayl/issue/archive</a></span></p> en-US Tue, 05 Dec 2023 13:52:11 +0000 OJS 3.2.1.4 http://blogs.law.harvard.edu/tech/rss 60 al-Ashraf ̔Umar’s Tabṣira, Chapter xxiii: Timekeeping at Night by the Moon in 13th-Century Yemen and Beyond https://revistes.ub.edu/index.php/suhayl/article/view/44975 <p>This article explores methods for determining moonrise and moonset as evidenced within a range of pre- and early modern sources originating from Islamicate societies. The idea emerged during a workshop in July 2022 where a talk by the first author on Ibn Waḥshiyya’s moonrise-moonset text in his al-Filāḥa al-Nabaṭiyya («The book of Nabatean agriculture») and the second author’s project on the Kitāb al-Tabṣira fī ̔ilm al-nujūm («Book of enlightenment in the science of the stars») by al-Ashraf ̔Umar revealed overlaps. Given the resemblances observed in the two sources, chapter xxiii of Tabṣira has been selected as the initial reference point for tracing the technique across additional sources. It is important to note that this examination does not assert comprehensiveness, nor does it account for the reciprocal interdependencies among the examples presented. Nevertheless, the present article suggests a categorisation of the diverse methods predicated on various factors such as exactitude, complexity, state of completeness, literary formats, and audience.</p> Razieh S. Mousavi, Petra G. Schmidl Copyright (c) 2023 Razieh S. Mousavi, Petra G. Schmidl https://creativecommons.org/licenses/by-nc-nd/3.0/es/deed.ca https://revistes.ub.edu/index.php/suhayl/article/view/44975 Tue, 05 Dec 2023 00:00:00 +0000 The Tanbīh al-anām ̔alā mā yaḥduthu fī ayyām al- ̔ām (Warning to humanity about what happens during the days of the year) by ̔Abdu ̓ l-Raḥmān al-Jādirī (777/1375–818/1416) https://revistes.ub.edu/index.php/suhayl/article/view/44980 <p>The article studies, translates, and edits a calendar entitled Tanbīh al-anām ̔ala mā yaḥduthu fī ayyām al- ̔ām (Warning to humanity about what happens during the days of the year), written by al-Jādirī (777/1375-ca. 818/1416). The author is a well-known muwaqqit who worked in Fes. The book was written at the request of an unknown scholar who asked al-Jādirī to adapt to the latitude of Fes a calendar written by the mathematician and astronomer Ibn al-Bannā ̓ (654/1256–721/1321) for the latitude of Marrakesh. Al-Jādirī calls this calendar Taqyīd fī l-shuhūr al- ̔ajamīya wa-mā yaḥduthu fī-hā. Even though there is no known reference to this Taqyīd in the bibliography about Ibn al- Bannā ̓, al-Jādirī’s Tanbīh most closely resembles his Risāla fī l-anwā ̓. This latter work was strongly in uenced by the well-known Kitāb al-anwā ̓ written by ̔Arīb b. Sa ̔īd (d. 370/980–981). Al-Jādirī knew ̔Arīb’s work and probably employed it in order to complete the calendar written by Ibn al-Bannā ̓, to which he added materials borrowed from other sources. This represents thus a revival of the Andalusi tradition of calendars and treatises about Arabic folk astronomy in the early 9th/15th century.</p> Emilia Calvo, Montse Díaz-Fajardo Copyright (c) 2023 Emilia Calvo, Montse Díaz-Fajardo https://creativecommons.org/licenses/by-nc-nd/3.0/es/deed.ca https://revistes.ub.edu/index.php/suhayl/article/view/44980 Tue, 05 Dec 2023 00:00:00 +0000 Sources of the Planetary Theories in Fahhād’s ̔Alā ̓ī zīj: Solving a Medieval Case of Intellectual Fraud https://revistes.ub.edu/index.php/suhayl/article/view/44981 <p>According to the anonymous 13th-century Shāmil zīj, Abu ̓l-wafā ̓ al- Būzjānī’s (10 June 940–after 25 May 997) planetary theories were adopted in Ibn al- Fahhād’s 12th-century ̔Alā ̓ī zīj without acknowledgement. This puzzling case of plagiarism, noted by the late Prof. E. S. Kennedy in 1956, is solved by means of a graphical approach, together with some astronomical analysis, in order to (A) visualize the perplexing network of the development of planetary theories in medieval Islam and (B) distinguish the types of relations existing between them. The paper describes the new strategies invented in the Islamic period to modify the available planetary theories in order to reconcile them with the observations, called istidrāk and i ̔tibār, which were different from the standard methods set forth in the Almagest. The accusations of fraud are shown to be unfounded. It is shown that Ibn al-Fahhād’s solar and lunar theories and his precessional rate of 1°/66y are taken from the Mumtaḥan tradition; his theories of Jupiter and Saturn were the results of his modifications of ̔Abd al-Raḥmān al-Khāzinī’s corresponding theories in the Mu ̔tabar zīj (1121 ce) on the basis of the results he achieved from his observations; his theory of Mars was constructed on the basis of his observations, independent of any other available theory; and his theory of Venus is taken directly and faithfully from Khāzinī.</p> S. Mohammad Mozaffari Copyright (c) 2023 S. Mohammad Mozaffari https://creativecommons.org/licenses/by-nc-nd/3.0/es/deed.ca https://revistes.ub.edu/index.php/suhayl/article/view/44981 Tue, 05 Dec 2023 00:00:00 +0000 Sonja Brentjes (ed.), Peter Barker (associate ed.) & Rana Brentjes (assistant ed.), Routledge Handbook on the Sciences in Islamicate Societies https://revistes.ub.edu/index.php/suhayl/article/view/44982 <p>Sonja Brentjes (ed.), Peter Barker (associate ed.) &amp; Rana Brentjes (assistant ed.), Routledge Handbook on the Sciences in Islamicate Societies. Practices from the 2nd/8th to the 13th/19th Centuries, London &amp; New York: Routledge, 2022 (XXXVII + 837 pp.)</p> Samsó Julio Copyright (c) 2023 J. Samsó https://creativecommons.org/licenses/by-nc-nd/3.0/es/deed.ca https://revistes.ub.edu/index.php/suhayl/article/view/44982 Tue, 05 Dec 2023 00:00:00 +0000 Lola Ferre, Isaac Israeli’s The Definition of Fever and Its Essence in Its Hebrew Translations / Pauline Koetschet, Abū Bakr al-Rāzī, Doutes sur Galien / Sergi Grau Torras, Les transformacions d’Aristòtil. Filosofia natural i medicina a Montpeller https://revistes.ub.edu/index.php/suhayl/article/view/44983 <p>Lola Ferre (with the collaboration of Esther Boucher and Basem Mahmud), Isaac Israeli’s The Definition of Fever and Its Essence in Its Hebrew Translations (Accompanied by Arabic, Latin and Old Spanish Editions and English translation), Philadelphia: American Philosophical Society Press, 2023, (256 pp.) (Transactions of the American Philosophical Society, volume 111, Part 5).</p> <p>Pauline Koetschet, Abū Bakr al-Rāzī, Doutes sur Galien. Introduction, édition et traduction, Berlin, Boston: De Gruyter, 2019, (cxxxviii + 347 pp.) (Scientia Graeco-Arabica Band 27, herausgegeben von Marwan Rashed).</p> <p>Sergi Grau Torras, Les transformacions d’Aristòtil. Filoso a natural i medicina a Montpeller: el cas d’Arnau de Vilanova (c. 1240-1311), Barcelona: Institut d’Estudis Catalans - Fundació Noguera, 2020, (267 pp.) (Treballs de la Secció de Filoso a i Ciències Socials 50).</p> Miquel Forcada Copyright (c) 2023 M. Forcada https://creativecommons.org/licenses/by-nc-nd/3.0/es/deed.ca https://revistes.ub.edu/index.php/suhayl/article/view/44983 Tue, 05 Dec 2023 00:00:00 +0000