المناظر: الفرق بين النسختين

'''المقالة الأولى''': كيفية الإبصار بالجملة.<ref>{{cite web|last=Smith|first=A. Mark|title=What is the History of Medieval Optics Really About?|year=2004|url=http://www.amphilsoc.org/sites/default/files/480202.pdf|deadurl=yes|archiveurl=https://web.archive.org/web/20111018045417/http://www.amphilsoc.org/sites/default/files/480202.pdf|archivedate=2011-10-18|df=}}</ref><ref>[https://www.jstor.org/stable/228388 Sabra, the authorship of Liber de crepusculis] {{Webarchive|url=http://web.archive.org/web/20160513110638/http://www.jstor.org/stable/228388 |date=13 مايو 2016}}</ref><ref>{{cite book|last=Lindberg|first=David C.|title=The Beginnings of Western Science|year=1992|publisher=The University of Chicago Press|location=Chicago}}</ref>