53. Diffraction Limit of the Eye.
a. Calculate the diffraction limit of the human eye, assuming a wide-open pupil so that your eye acts like a lens with a diameter of 0.8 centimeters, for visible light of 500-nanometer wavelength. How does this compare to the diffraction limit of a 10-meter telescope?
b. Now remember that humans have two eyes that are approximately 7 centimeters apart. Estimate the diffraction limit for human vision, assuming that your two eyes act as an "optical interferometer" that gives you the angular resolution of a single "eye" that is 7 centimeters in diameter.