Question

2. Approximate the colored dots in a pointillist painting as closely spaced circles with center-to-center separations of D = 1.9mm. Assume wavelengths in the middle of the visible light range. 2a). If the diameter of the pupil of your eye is d = 1.3mm, what is the viewing distance beyond which you cannot distinguish individual dots? 2b). If someone turns up the lights in the room, how will this tendency to blur colors together change from any given fixed vantage point?

Answer 1