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Homework Help: Diffraction Grating

  1. May 17, 2008 #1
    "Diffraction Grating"

    We did a diffraction experiment involving single slits, double slits, and a diffraction grating. Apparently the diffraction grating that we got was "different" (according to a classmate). The diffraction grating was "criss-crossed" and didn't produce any dark fringes on the interference pattern.
    Can anyone tell me what one of these criss-crossed gratings is called so that I can figure out (i.e. Google) what the diffraction pattern would look like?
    Thank you!
  2. jcsd
  3. May 17, 2008 #2
    Can you give any other description other than that? I am stumped!
  4. May 17, 2008 #3
    All I know is that the diffraction pattern somehow had no dark fringes...
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