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I need help with my physics lab questions about diffraction grafting

  1. Sep 30, 2012 #1
    question
    1) If "d" is the grafting constant "spacing between 2 slits on a grating), hwo can we obtain the ruling (number of grooves per meter) "D"?

    2) Illistrate order of diffraction
     
  2. jcsd
  3. Sep 30, 2012 #2

    sophiecentaur

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    1. Did you read the "Do NOT POST HOMEWORK" notice at the top of this forum.
    2. It's a 'grating constant'. "Grafting" is what gardeners do with fruit trees.
    3. Isn't this in your notes? How is 'number per unit length' related to 'spacing'? Imagine it was a row of fence posts.
     
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