Islamic scientist

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**ABU ABDULLAH AL-BATANI** (858 - 929 A.D)

From: Dr.Shuja Khan-Ghori

ABU ABDULLAH AL-BATANI Abu Abdallah Muhammad Ibn Jabir Ibn Sinan al-Battani al-Harrani was born
around 858 A.D. in Harran, and according to one account, in Battan, a State of Harran.
Battani was first educated by his father Jabir Ibn San'an al-Battani, who was also a well-
known scientist. He then moved to Raqqa, situated on the bank of the Euphrates, where he
received advanced education and later flourished as a scholar. At the beginning of the 9th
century, he migrated to Samarra, where he worked till the end of his life in 929 A.D. He
was of Sabian origin, but was himself a Muslim. Battani was a famous astronomer,
mathematician and astrologer. He has been held as one of the greatest astronomists of
Islam. He is responsible for a number of important discoveries in astronomy, which was the
result of a long career of 42 years of research |
AL-Battani determined with remarkable accuracy
the obliquity of the ecliptic, the length of the seasons and the true and mean orbit of
the sun. He proved, in sharp contrast to Ptolemy, the variation of the apparent angular
diameter of the sun and the possibility of annular eclipses. He rectified several orbits
of the moon and the planets and propounded a new and very ingenious theory to determine .
the conditions of visibility of the new moon. His excellent observations of lunar and
solar eclipses were used by Dunthorne in 1749 to determine the secular acceleration of
motion of the moon. He also provided very neat solutions by means of orthographic
projection for some problems of spherical trigonometry. In mathematics, he was the first
to replace the use of Greek chords by sines, with a clear understanding of their
superiority. He also developed the concept of co-tangent and furnished their table in
degrees. He wrote a number of books on astronomy and trigonometry. His most famous book was his astronomical treatise with tables, which was translated into Latin in the l2th century and flourished as De scienta stellerum - De numeris stellerum et motibus. An old translation of this is available of the Vatican. His Zij was, in fact, more accurate than all others written by that time. His treatise on astronomy was extremely influential in Europe till the Renaissance, with translations available in several languages. His original discoveries both in astronomy and trigonometry were of great consequence in the development of these sciences. |

"Allah is beautiful and loves beauty" Hadith,Sahih Al Bukhari.