Alhacen's treatment of light and sight in the "De aspectibus" culminates with the analysis of refraction in book 7. Far briefer than his account of reflection,

From its inception in Greek antiquity, the science of optics was aimed primarily at explaining sight and accounting for why things look as they do. By the end o

A new reconstruction and text of the Placita of Aëtius (ca. 50 CE), accompanied by a full commentary and an extensive collection of related texts. This compend