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Inteference of light waves distance of double&single slit

  1. Aug 24, 2014 #1
    1. The problem statement, all variables and given/known data

    in my textbook, it states that if the single slit together with the light source more closer to the double slit, the intensity of light form double slit increases . hence, the bright fringes of the inteference pattern would be brighter...i couldnt understand why . Can someone explain on this?

    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Aug 24, 2014 #2

    BvU

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    Well, I don't understand either. Perhaps the wording got distorted. Could you please rad what you typed and correct the errors ? Otherwise: What textbook might that be ? Does it also provide a drawing of the situation ?
     
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