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AL-SHĪRĀZĪ AND THE EMPIRICAL ORIGIN OF PTOLEMY'S EQUANT IN HIS MODEL OF THE SUPERIOR PLANETS
Abstract Ptolemy presents only one argument for the eccentricity in his models of the superior planets, while each one of them has two eccentricities: one for center of the uniform motion, the other… Expand
QUṬB AL-DĪN AL-SHĪRĀZĪ AND THE DEVELOPMENT OF NON-PTOLEMAIC PLANETARY MODELING IN THE 13th CENTURY
- Amir-Mohammad Gamini
- 1 September 2017
Coming after Muʾayyad al-Dīn al-ʿUrḍī (1200–1266) and Naṣīr al-Dīn al-Ṭūsī (1201–1274), Quṭb al-Dīn al-Shīrāzī (1236–1311), a leading figure of the so-called Marāgha school in astronomy, presents his… Expand