human-visual-acuity

This chapter explores the technical feasibility of perceiving parallax without a traditional background by analyzing the visibility and size of a torch as seen by a character named Wicky. It uses human visual acuity and interpupil distance as comparative metrics to estimate the torch's size and the effective stereo range for depth perception, concluding that the torch's dimensions and heating effects are consistent with its visibility at significant distances. The discussion also touches on the potential for enhanced visual resolution in creatures with multiple eyes.