1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
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: Diffraction Experiment - Comparing theory with my data

  1. Mar 2, 2008 #1
    Not sure if this is the right forum for this but I am analysing the data for the diffraction experiment I have just done (laser source at two slit diffraction grating) and have got the graph (similar to this http://www.physics.umd.edu/courses/Phys273/williams06/TwoSlit.jpg" [Broken]).
    However all the minima for my data have been shifted towards the origin when compared to the theoretical plot. I have been racking my brains but can't think of any convincing reasons why this could happen other than the fact that I got bad results.
    The minima are also not at zero but I am less concerned about this since I am assuming this is just down to not getting perfect intensity.

    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Mar 2, 2008 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Have you double-checked your values for slit separation and wavelength? (These would obviously affect the width of the pattern.)
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook