In his Kitab al-Fawa'id fi usul al-bahr wa'l-qawa'id, Ahmad bin Majid, describes the known world and its oceans, lands and seas in about 1490.
For a useful but brief introduction to how the astrolabe worked see this Ted Talks video with Arabic subtitles.
For a useful but brief introduction to how the astrolabe worked see this Ted Talks video with Arabic subtitles.
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| Map of the Indian Ocean System and Land Routes of the Silk Trade with China during the time of Ibn Majid. The locations and names in Arabic on this map match well with Chapter 10 or the Tenth Fa'ida of Ibn Majid's 15th century description. |
