In his work, Alhazen describes his experiments using a Camera Obscura, or darkened chamber with a small peep hole, and the aid of mirrors to prove that light traveled in straight lines (foreshadowing the work of Kepler and Descartes some 600 years later).
Roger Bacon (1214-1292) had argued, following Alhazen, that species, or visible form, entered from without via the senses, while William of Ockham (1285-1347) and the "nominalists" denied this.
In addition to his unique studies of optics, Ibn Haytham's legacy was also evident in astronomy: There is the Alhazen
Crater on the Moon as well as the Alhazen
Asteroid (previously identified as 59239).
Belting attributes this watershed misreading to a transformation that occurred when Alhazen
was translated--changes in vocabulary suggested to readers of Latin that the theory of vision must also entail a study of pictures.
Bala devotes considerable attention to the work of the tenth-century scientist Alhazen
, who revolutionized optical theory with his description of rays that follow mathematically precise paths from every point of an object into the eye.
He chronicles the efforts of legions of scholars, from the Arab mathematician Alhazen
to isaac Newton, to explain the nature of light and color.
is best known for his efforts to produce a perceptual theory that would reconcile Euclid's Geometry with Galen's writings on the physiology of the eye.
Not only was such information about neurology and the lenses of the eyes centuries beyond Leonardo's reach, but, in the 1470s, the artist had little ability in Latin, and so even the writings of the medieval authorities on optics, Alhazen, Pecham, and Witelo were largely inaccessible to him.
That vision cannot exist without prior knowledge and Judgement was recognised by the medieval Arabic scholar Alhazen (see The Optics of Ibn al-Haythan, translated by A.
of Basra, the 10th century Iraqi scholar, had a portable tent room for solar observation and gave a full account of the principle.
In their efforts to explain the magic gifts, they refer to the stories of Pegasus and the Trojan horse (206-11); to accounts by Alhazen
, Witelo and Aristotle on mirrors and reflections (232-35); to Achilles who had a spear comparable to the magic sword (238-40); to Moses and Solomon who possessed knowledge and skill akin to that given by Canacee's ring (250-51).
He made use of Alhazen
, Algazel Albumasar and Alfarabi.
In 1837 their observations were discussed by Beer & Madler under their description of Alhazen
in Der Mond, a monumental treatise which summed up much of what was known about the Moon by the dawn of the nineteenth century.
Close attention is given to the evolution of intentio in Arabic philosophy extending from Alhazen
to Averroes, with acknowledgement that Averroes' views were used for conflicting purposes by thinkers such as Scotus and Ockham (pp.
(or Alhacen) (965-1039 AD) translated and adapted Ibn al-Haytham's Kitab al-Manazir into a medieval Latin treatise on light and sight.