- Alphonsine Tables (1)
- Arabic manuscripts (1)
- Astronomy, Medieval (1)
- Mathematics, Arab (1)
- Solar system (1)
Facts on the Calculation of Degrees and Minutes
This manuscript by Badr al-Dīn Muhammad ibn Muhammad ibn Ahmad ibn Muhammad ibn al-Ġazal (1423–1506) contains a commentary on, and abridgement of, the astrological treatise on the calculation of the movement of stars and planets, Kašf al-haqā’iq fī hisāb al-daraj wa-al-daqā’iq (The uncovering of the facts regarding the calculation of degrees and minutes), by the Egyptian astronomer and mathematician Ahmad ibn Rağab ibn al-Mağdī (1366–1447). Ibn al-Mağdī was a disciple of the famous ‘Abdallāh al-Māridīnī (or al-Mārdīnī), who was the grandfather of the author of this ...
Book of the Alphonsine Tables
A reflection of the knowledge of astronomy of the time, these tables were produced in Spain between 1263 and 1272 under the direction of Isaac ben Sid and Judah ben Moses Cohen. The Ptolemaic belief that the planets orbited the Earth was then the predominant cosmological system, and the heliocentric model of the solar system formulated by Copernicus, who personally studied and copied the tables, was still two centuries away. Known as Alfonsine tables after King Alfonso X of Castile (reigned 1252–84), the tables are a compilation of data ...