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Late Medieval Planetary Theory

Isis 57:365-378 (1966)

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  1. Quṭb al-dīn al-shīrāzī and the development of non-ptolemaic planetary modeling in the 13 th century.Amir-Mohammad Gamini - 2017 - Arabic Sciences and Philosophy 27 (2):165-203.
    Coming after Muʾayyad al-Dīn al-ʿUrḍī and Naṣīr al-Dīn al-Ṭūsī, Quṭb al-Dīn al-Shīrāzī, a leading figure of the so-called Marāgha school in astronomy, presents his predecessors’ non-Ptolemaic models and criticizes them in his threehayʾabooks. Since his own new models inNihāyat al-idrāk andIkhtiyārāt muẓaffarī are not without difficulties, in his latest book onhayʾa,al-Tuḥfa al-shāhiyya he puts forward his modified models inspired from Ṭūsī’s and ʿUrḍī’s models and produces a series of new models for Mercury and the oscillation of the spheres. Nevertheless, in (...)
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  • The Spherical Case of the Tūsī Couple.George Saliba & E. S. Kennedy - 1991 - Arabic Sciences and Philosophy 1 (2):285.
    In this article we study the development of the mathematical theorem, now known as the T Couple, and discuss the difference between its plane and spherical applications.
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  • Progress and Civilization in Whitehead.Dwayne Schulz - 2020 - Process Studies 49 (2):188-208.
    This article is an attempt to analyze and criticize, both positively and negatively. Whitehead's concept of progress. Whitehead's progressive cosmology is critically examined, as is the relationship between technology and moral progress. The fragility of progress is emphasized.
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  • Duhem, the arabs, and the history of cosmology.F. Jamil Ragep - 1990 - Synthese 83 (2):201 - 214.
    Duhem has generally been understood to have maintained that the major Greek astronomers were instrumentalists. This view has emerged mainly from a reading of his 1908 publication To Save the Phenomena. In it he sharply contrasted a sophisticated Greek interpretation of astronomical models (for Duhem this was that they were mathematical contrivances) with a naive insistence of the Arabs on their concrete reality. But in Le Système du monde, which began to appear in 1913, Duhem modified his views on Greek (...)
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  • The principle of simplicity for Quṭb al-Dīn Shīrāzī.Amir-Mohammad Gamini & Mohammad-Mahdi Sadrforati - 2022 - Studies in History and Philosophy of Science Part A 91 (C):60-65.
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  • Two Persian Astronomical Treatises by Nas?r al-D?n al T?s?E. S. Kennedy - 1984 - Centaurus 27 (2):109-120.
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  • Configuring the universe: Aporetic, problem solving, and kinematic modeling as themes of Arabic astronomy.Abdelhamid I. Sabra - 1998 - Perspectives on Science 6 (3):288-330.
    The undoubted truth is that there exist for the planetary motions true and constant configurations from which no impossibilities or contradictions follow; they are not the same as the configurations asserted by Ptolemy; and Ptolemy neither grasped them nor did his understanding get to imagine what they truly are.
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  • The Status of Models in Ancient and Medieval Astronomy.Bernard R. Goldstein* - 1980 - Centaurus 24 (1):132-147.
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  • The Rôle of Maragha in the Development of Islamic Astronomy : A scientific revolution before the renaissance.George Saliba - 1987 - Revue de Synthèse 108 (3-4):361-373.
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  • A forgotten solar model.S. Mohammad Mozaffari - 2016 - Archive for History of Exact Sciences 70 (3):267-291.
    This paper analyses a kinematic model for the solar motion by Quṭb al-Dīn al-Shīrāzī, a thirteenth-century Iranian astronomer at the Marāgha observatory in northwestern Iran. The purpose of this model is to account for the continuous decrease of the obliquity of the ecliptic and the solar eccentricity since the time of Ptolemy. Shīrāzī puts forward different versions of the model in his three major cosmographical works. In the final version, in his Tuḥfa, the mean ecliptic is defined by an eccentric (...)
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  • The spherical case of the tūsī couple: George Saliba and E.s. Kennedy.George Saliba - 1991 - Arabic Sciences and Philosophy 1 (2):285-291.
    In this article we study the development of the mathematical theorem, now known as the Tūsī Couple, and discuss the difference between its plane and spherical applications. Dans cet article, nous étudions le développement du théorème mathématique, connu maintenant sous le nom de ‘couple d'al-Tūsī’; et nous discutons la différence entre son application plane et son application sphérique.
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