Ali Ibn Isa

Ali Ibn Isa (arabe : علي بن عيسى) était un astronome arabe du IXe siècle.

Avec Chalid ben Abdulmelik (en), en 827, il a mesuré la circonférence de la Terre, obtenant un résultat de 40 248 km (voire, selon d'autres sources, 41 436 km).


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