Penn Library's LJS 472 - [Ḥeshbon mahalkhot ha-kokhavim]. (Video Orientation)
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Medieval Studies
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youtube
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2015-10-01
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Video Orientation to the University of Pennsylvania Library's LJS 472 - Ḥeshbon mahalkhot ha-kokhavim, by Abraham bar Hiyya Savasorda. Written in Spain during the 15th century. Summary: 15th-century copy of the second part of a 12th-century two-part treatise, on astronomy (the first part, not present in this manuscript, discussed geography). Includes computations for solar and lunar eclipses between 1135 and 1136.