Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: A Very, Very Interesting Problem

  1. Mar 25, 2012 #1
    A diffraction grating has 150 "lines" per mm etched upon it. When light of wavelength 275 nm is normally incident upon the grating, how many bright spots appear on a screen a short distance away?:smile:
     
  2. jcsd
  3. Mar 25, 2012 #2

    Pengwuino

    User Avatar
    Gold Member

    Please provide some attempt at the solution. We do not just provide answers here.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook