2011/01/01 by Jean-Charles Ducne · 1 citation
Arts and Humanities · Physics and Astronomy · #Archaeology and Historical Studies #Cartography #Geodesy #Geographic coordinate system #Geography #Historical Astronomy and Related Studies #Historical and Architectural Studies #Latitude #Linguistics #Longitude #Notation #Philosophy
paper · doi:10.1515/islam.2011.022
openalex publication_date 2011/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
Nine maps of the manuscript Bnf. ar. 2221 of al-Idrs's Nuzhat al-mutq give us one of the few examples of the use of geographical coordinates on the Islamic medieval maps. The longitude and the latitude of 34 places are written with the numerical value of the letters ( abad notation). Their examination shows that they belong to al-Idrs's work but that they were copied in this manuscript as an iconographical element. Furthermore, these coordinates are in majority new and original, and they throw light on al-Idrs's new and unknown source.