Al-Kharaqī

Abū Muḥammad 'Abd al-Jabbār al-Kharaqī,alsoAl-Kharaqī(1084-1158^[1]) was aPersian^[2]astronomer and mathematician of the 12th century, born in Kharaq nearMerv.^[3]He was in the service ofSultan Sanjarat the Persian Court. Al-Kharaqī challenged the astronomical theory ofPtolemyin theAlmagest,and established an alternative theory of the spheres, imagining huge material spheres in which the planets moved inside tubes.^[3]

During his travels to theOttoman Empirein 1536,Guillaume Postelacquired an astronomical work by al-Kharaqī,Muntahā al-idrāk fī taqāsīm al-aflāk( "The Ultimate Grassp of the Divisions of Spheres" ), annotated it, and brought it back to Europe.^[4]

Al-Kharaqī also wrote mathematical treatises, now lost,Al-Risala al-Shāmila( "Comprehensive Treatise" ) andAl-Risala al-Maghribiyya( "The North African Treatise", related to thecalculusofdirhamanddinar).^[3]

Works

Muntahā al-idrāk fī taqāsīm al-aflāk( "The Ultimate Grassp of the Divisions of Spheres" ) 1138/9
Al-Risala al-Shāmila( "Comprehensive Treatise" )
Al-Risala al-Maghribiyya( "The North African Treatise" )

Notes

^Akpınar, Cemil (1997)."HARAKĪ".TDV İslâm Ansiklopedisi(in Turkish). Vol. 16. İstanbul:Türkiye Diyanet Vakfı.pp. 94–96.
^Selin, Helaine (2008).Encyclopaedia of the history of science, technology, and medicine in non-western cultures.Berlin New York: Springer. p.134.ISBN 9781402049606.Abū Muh.ammad ˓Abd al-Jabbār ibn ˓Abd al-Jabbār al-Kharaqī was a Persian astronomer, mathematician and geographer.
^^a ^b ^cEncyclopaedia of the history of science, technology, and medicine,ed.Helaine Selin,p.478
^Islamic science and the making of European Renaissance,by George Saliba, p.218ISBN 978-0-262-19557-7

[TDV-1] Akpınar, Cemil (1997)."HARAKĪ".TDV İslâm Ansiklopedisi(in Turkish). Vol. 16. İstanbul:Türkiye Diyanet Vakfı.pp. 94–96.

[2] Selin, Helaine (2008).Encyclopaedia of the history of science, technology, and medicine in non-western cultures.Berlin New York: Springer. p.134.ISBN 9781402049606.Abū Muh.ammad ˓Abd al-Jabbār ibn ˓Abd al-Jabbār al-Kharaqī was a Persian astronomer, mathematician and geographer.

[Selin-3] Encyclopaedia of the history of science, technology, and medicine,ed.Helaine Selin,p.478

[4] Islamic science and the making of European Renaissance,by George Saliba, p.218ISBN 978-0-262-19557-7

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