1. The problem statement, all variables and given/known data Diffraction and interference occur for wave phenomena such as light and water waves as well as sound waves. During a lecture on diffraction, Steve's eyelids droop,meaning that he closes his eyes until he is looking out through his eyelashes. Then, a green light (lambda= 6 e -7) ini the lecture hall appears to have multiple images, and each image is blurred (wider) than when his eyes are more wide open. What is the full angular widht (delta theta) of each of the multiple images of the light as viewed through the gap between a pair of neighboring eyelashes? Suppose that the diameter of Steve's eyelashes is 3 x 10^-6 m and the spacing between them is 6 x 10^-6 m. 2. Relevant equations I think we have to using sin(theta) = lambda/W. For the eyelashes, I think we have to use sin (theta) = 1.22 lambda/D. 3. The attempt at a solution So basically, I used that same formula twice, and added the theta's up to get the angle. I don't think that this approach is right, so any advice/guidance would be appreciated.