The following error occured: Unable to locate template 'Ibn al Haytham - First Scientist by Bradley Steffens is the world's first biography of the eleventh-century Muslim scholar known in the West as Alhazen, Alhacen, or Alhazeni.' ('/opt/deltel/engine/templates/Builder/Ibn al Haytham - First Scientist by Bradley Steffens is the world's first biography of the eleventh-century Muslim scholar known in the West as Alhazen, Alhacen, or Alhazeni.')