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

Reflection Diffraction Gratings

  1. Apr 8, 2008 #1
    My lecturer has given me this formula for reflective diffraction

    m landa = d (cos a - cos b)


    m is order #
    landa is wavelength
    d is slit seperation
    a is angle of inicdence
    b is angle of reflection

    The problem I have is I wasn't given any justification of this and have no idea where it comes from
  2. jcsd
  3. Apr 8, 2008 #2


    User Avatar

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Reflection Diffraction Gratings
  1. Reflection grating (Replies: 5)