The Astronomical Observatories of Jai Singh c7.5
The Astronomical Observatories of Jai Singh c7.5
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c7.5
The invention of this instrument is usually attributed to Ibrāhīm b. Yaḥyā al-Naqqāsh (the engraver), born at Cordova, and who lived from about A.D. 1029 to 1087.⁴ He was known as al-Zarqālī (Arzachel) and his instrument was called al-ṣafīḥat al-zarqāliya “the tablet of al-Zarqālī” and was famous in mediaeval Europe under the name Saphaea Arzachelis.