If Frank were looking at a figure in which bright and dark regions are perceived within a single stripe, even though there is no variation in the physical distribution of light, he would be looking at

Question

Quizplus · Accepted Answer

Mach bands are an optical illusion that makes the contrast at the edges of slightly different shades appear more pronounced, creating the perception of brighter and darker regions within a single stripe, even when the physical distribution of light is uniform. This phenomenon is named after the physicist Ernst Mach.

If Frank Were Looking at a Figure in Which Bright