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Translucent spot

  1. Aug 28, 2006 #1
    Why is translucent spot produced when food containing lipid is rubbed against a paper? Is it related to adsorption?
  2. jcsd
  3. Aug 28, 2006 #2


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    It means that the light rays are scattered by the fat molecules and can be absorbed and re-emitted internally thereby transmitting some light to the other side. But I do not know how the mechanism actually works.
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