Question: 650 nm light passes through two very narrow slits separated by 10 μm and then strikes a screen 1m distant.
a. Describe what appears on the screen and where.
b. Suppose the screen were replaced with an array of photon counters, and the intensity of the incident light were reduced to 1 photon per minute. What would be detected on the arrays of counters?
c. If one of the two slits were blocked, what would appear upon the screen? Assume that the width of the single slit is 1 μm.
d. What is the puzzle implicit in your answers to (b) and (c), and how does the Heisenberg uncertainty principle resolve this puzzle?