What is the significance of the pictures on the notes?
5K Note: Front – Gully Ali Beg and its 800m waterfall. The 10km gully passes between Mount Kork and Mount Nwathnin, some 60km away from Shaqlawa. Back – The second century desert fortress of Al-Ukhether, Hejira. 10K Note: Front – Abu Ali Hasan Ibn al-Haitham (known as Alhazen to medieval scholars in the West), born Basrah in 965 A.D. His most important work – although he wrote some 200 books – is held to be a seven volume series on optics Kitab al-Manazir, in which he gives the first correct explanation of vision, showing that light is reflected from an object into the eye. He is said to have invented the camera obscura. Also, an eminent physicist and mathematician he developed analytical geometry by establishing linkage between algebra and geometry. Alhazens work was translated into Latin, and greatly influenced European scientific thought. Back – Hadba Minaret, at the Great Nurid Mosque, Mosul, built 1172 A.D by Nurridin Zangi, the then Turkish ruler. The 59m-high minaret leans 8 fee
