INTERACTIVE EXAMPLE
© Copyright, Department of Physics, University of Illinois at Urbana-Champaign

Missing Order


A two slit interference/diffraction pattern is set up (thus for this problem we will take into account the effects of both diffraction and interference). You are given that the screen is 1.8 m away from the slits with width .01 mm and spacing .05 mm and light of wavelength 640 nm is used. What is the smallest order interference maximum that is "missing" from the interference/diffraction pattern on the screen?