Zobrazeno 1 - 10
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pro vyhledávání: '"S. Mohammad Mozaffari"'
Autor:
S. Mohammad Mozaffari
Publikováno v:
Archive for History of Exact Sciences. 76:513-529
Autor:
Jeremy J. Drake, S. Mohammad Mozaffari
Publikováno v:
Journal for the History of Astronomy. 52:77-103
The historical evidence from the past two millennia show two problems concerning the star Algol (β Per): First, a critical variation in its brightness from a magnitude m ~ 2 in (1) Ptolemy’s Almagest (2nd century AD) and reported by (2) al-Ṣūf
Autor:
Georg Zotti, S. Mohammad Mozaffari
Publikováno v:
Journal for the History of Astronomy. 51:255-271
The observatory of Ulugh Beg, erected in Samarqand in the 1420s, represents the culmination in the development of astronomical observatories in the Islamic world. After its rediscovery and excavation in the early twentieth century there have been sev
Autor:
S. Mohammad Mozaffari
Publikováno v:
Archive for History of Exact Sciences. 73:517-549
Farīd al-Dīn Abu al-Ḥasan ‘Alī b. al-Fahhād’s astronomical tradition as represented in the prolegomenon to his Alā’ī zīj (1172 AD) shows his experimental examination of the theories of his predecessors and testing the circumstances of
Autor:
S. Mohammad Mozaffari
Publikováno v:
Journal for the History of Astronomy. 50:46-81
The orbital elements of each planet are the eccentricity and the direction of the apsidal line of its orbit defined by the ecliptic longitude of either of its apses, i.e., the two points on its orbit where the planet is either furthest from or closes
Autor:
S. Mohammad Mozaffari
Publikováno v:
Journal for the History of Astronomy. 52:494-495
Autor:
S. Mohammad Mozaffari
Publikováno v:
Archive for History of Exact Sciences. 72:591-641
This paper presents an analysis of the systematic astronomical observations performed by Muḥyī al-Dīn al-Maghribī (d. 1283 AD) at the Maragha observatory (northwestern Iran, ca. 1260–1320 AD) between 1262 and 1274 AD. In a treatise entitled Ta
Autor:
S. Mohammad Mozaffari
Publikováno v:
Archive for History of Exact Sciences. 72:191-243
From Antiquity through the early modern period, the apparent motion of the Sun in longitude was simulated by the eccentric model set forth in Ptolemy’s Almagest III, with the fundamental parameters including the two orbital elements, the eccentrici
Autor:
S. Mohammad Mozaffari
Publikováno v:
Science in Context. 30:1-32
ArgumentIn the Almagest, Ptolemy finds that the apogee of Mercury moves progressively at a speed equal to his value for the rate of precession, namely one degree per century, in the tropical reference system of the ecliptic coordinates. He generalize
Autor:
S. Mohammad Mozaffari
Publikováno v:
Journal for the History of Astronomy. 47:294-316
The Īlkhānī zīj compiled by Naṣīr al-Dīn al-Ṭūsī and his colleagues in the first period of the astronomical activities (the 1260s and early 1270s) in the Maragha observatory includes a star table collecting important observations of Islam