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[A camera obscura in use possibly showing the work of Ibn al-Haytham]
Internet - Original source ill-defined
Original source being researched.
Full details on the artist, date and source of this illustration are requested - firstname.lastname@example.org
This illustration is included in - Al-Hassani S. T. S., Woodcock E., Saoud R. (2006) 1001 inventions: Muslim heritage in our world. (Foundation for Science, Technology and Civilisation, Manchester, UK).