A Critical Edition of Ibn al-Haytham’s On the Shape of the by Dominique Raynaud

By Dominique Raynaud

This ebook presents the 1st serious version of Ibn al-Haytham’s On the form of the Eclipse with English translation and observation, which files the 1st scientific analysis of the digital camera obscura. On the form of the Eclipse comprises pioneering examine at the stipulations of formation of the picture, in a time deemed to be dedicated to aniconism. It additionally presents an early try and merge the two branches of historical optics―the thought of sunshine and thought of vision.

What probably such a lot strongly characterizes this treatise is the shut interplay of a geometrical research of sunshine and experimental reasoning. Ibn al-Haytham performed his experiments in a scientific method by means of various all that may be replaced: the form and dimension of the aperture, the focal size of the digital camera obscura, the gap and form of the celestial our bodies. this manner, he completed a radical knowing. This paintings represents a decisive step in either the historical past of optics and the applying of the experimental strategy that used to be simply as effective in medieval Islam as today.

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Additional resources for A Critical Edition of Ibn al-Haytham’s On the Shape of the Eclipse: The First Experimental Study of the Camera Obscura (Sources and Studies in the ... Sciences) (English, Arabic and Greek Edition)

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Lectio incerta ! sic <> addendum [] omittendum ( parenthesis added around a manuscript text to identify ratio terms ... X X ǁX long pause marked by the sign in MS X in MS X 27 Chapter 2 Arabic Text and Translation © Springer International Publishing AG 2016 D. 1007/978-3-319-47991-0_2 29 F MS Fātiḥ B MS Bodleian P MS Petersburg O MS India Office 1270 L MS India Office 461 F117r O79r P21v B81v L8v In the name of God, the Merciful1 al-Ḥasan ibn al-Ḥasan ibn al-Haytham’s Epistle on the Shape of the Eclipse <1.

Transposuit ? lectio incerta ! sic <> addendum [] omittendum ( parenthesis added around a manuscript text to identify ratio terms ... X X ǁX long pause marked by the sign in MS X in MS X 27 Chapter 2 Arabic Text and Translation © Springer International Publishing AG 2016 D. 1007/978-3-319-47991-0_2 29 F MS Fātiḥ B MS Bodleian P MS Petersburg O MS India Office 1270 L MS India Office 461 F117r O79r P21v B81v L8v In the name of God, the Merciful1 al-Ḥasan ibn al-Ḥasan ibn al-Haytham’s Epistle on the Shape of the Eclipse <1.

P23v If, at the time of the eclipse, the Sun is facing a dense body with a circular aperture, from each point of the self-luminous crescent,19 which is the part of the Sun, a light is emitted to the entire B83r area20 of the aperture and any following surface. It is thus clear that the light, coming from every point of the luminous part of the Sun to the aperture opposite the Sun, is in the form of a cone, whose apex is the point of that luminous part and the base is the plane of the aperture.

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