Ptolemy, in his treatise Optics, held an extramission-intromission theory of vision: the rays (or flux) from the eye fashioned a cone, the vertex being within the attention, and the base defining the visual subject. The rays were delicate, and conveyed details again on the observer's intellect about the distance and https://glassesnearme76208.gynoblog.com/29395785/examine-this-report-on-internet-radio