Bøger af E S Kennedy

Jamshid Ghyath al-Din al-Kashi (fl. 1420), a native of central Iran, worked at the Samarqand observatory of Sultan Ulugh Beg, grandson of Tamerlane. Kashi is best known as a virtuoso of computational mathematics, but he was also a competent astronomer. Among his major works is the "Zij-i Khaqani," an astronomical handbook written in Persian. The zij contains a list giving the latitudes & longitudes of some 515 places, mostly cities, the subject of this paper. Contents: Introduction; The Table; Analysis of the Table; & Bibliography. Illustrations.

The source material for the study of medieval oriental astronomy consists of Byzantine Greek, Sanscrit, Hebrew, Arabic, Persian, and Turkish astronomical and astrological manuscripts. If one desires to build up a detailed picture of Islamic astronomy, one can choose material from these available manuscripts. Of these manuscripts it is possible to isolate a group of works, the "zijes". A "zij" consists of the numerical tables and accompanying explanation sufficient to measure time and to compute planetary and stellar positions, appearance, and eclipses. This paper is a survey of the number, distribution, contents, and relations between "zijes" written in Arabic or Persian during the period from the 8th through the 15th centuries. Illustrations. Oversize.

No detailed description available for "The Astrological History of Masha'allah".