An Islamic Response to Greek Astronomy: "Kitāb Ta`dīl Hay'at Al-aflāk" of Ṣadr Al-Sharī`a

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"An Islamic Response to Greek Astronomy" is an edition, translation of and commentary on the astronomical work of the fourteenth-century Central Asian religious scholar sadr al-Shar?'a al-Bukh?r?. sadr al-Shar?'a develops the works of the thirteenth-century Maragha researchers, which set the tone for the astronomical research until the eventual demise of Ptolemaic astronomy. This work elucidates the development and achievement of the long tradition of reforming Ptolemaic astronomy. It corroborates other evidence that scientific creativity persisted well beyond the eleventh century, a period often viewed as an age of cultural decline and stagnation. sadr al-Shar?'a's knowledge of and competence in a diverse variety of disciplines is a compelling example of the state of education and level of scholarship in a fourteenth-century Muslim urban setting.
 

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Contents

18
35
On Circles
48
On the Orb of the Sun
60
On the Orbs of the Moon
74
On the Orbs Pertaining to the Longitudinal
107
On the Orbs Pertaining to the Longitudinal
119
Untitled
134
On Sectors Direct Motion and Retrograde Motion
168
On Visibility and Invisibility
219
On the Characteristics of the Northern Quarter
230
On Ascensions and Transits
256
On Time
278
On Dawn and Twilight
290
On the Extraction of the Line of Midday
307
Commentary
311
Bibliography
453

On Parallax
198
On the Conditions of the Two Luminaries
205

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About the author (1995)

Ahmad S. Dallal, Ph.D. (1990) in Islamic Studies, Columbia University, is Assistant Professor of Arabic and Islamic Studies at Yale University. He has written on Islamic science and Islamic revivalist thought.

Bibliographic information