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Laser and a strange shadow

  1. Oct 14, 2011 #1
    Hello!

    I have for you some questions about the lasers. When ordinary laser beam directed at a small ball (few millimeters) on the screen I saw a bright spot in the middle of the shadow. What it is due?
     
  2. jcsd
  3. Oct 14, 2011 #2

    Andy Resnick

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