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Atom struture : opaque and Transparent

  1. Jan 27, 2007 #1

    JPC

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    hey

    what in an atoms struture tells us if the element is going to be transparent or opaque ?

    what in an atoms structure tells us at what frequency photons will come out with after hiting the electrons ?
     
  2. jcsd
  3. Jan 27, 2007 #2

    ZapperZ

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    Please read the entry in our FAQ in the General Physics forum.

    Zz.
     
  4. Jan 27, 2007 #3

    Hootenanny

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    message too short
    Edit: Dammit Zz :tongue:
     
  5. Jan 27, 2007 #4

    ZapperZ

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    Well, you also missed the most important message in that FAQ. :)

    The moral of the story there is that "individual atoms" no longer play a significant role in almost all of the obvious properties of a solid. That is something that needs to be highlighted. People continue to ask about atomic absorption when light passes through a solid, and that is just not correct. The optical behavior, at least in the visible range, is now governed by the collective behavior of the solid, not by the atomic level of the individual atoms.

    If a solid behave the same way as individual atoms, there would be no need to have a field of study separate and different from atomic/molecular physics. Yet, we do Solid State/Condensed Matter physics.

    Zz.
     
  6. Jan 27, 2007 #5

    Hootenanny

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    :redface: :blushing:
     
  7. Jan 27, 2007 #6

    JPC

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    yeah i know its not the atom that makes the color, its the molecule
    but i was just asking for the case of atoms to simplify things

    Btw, thanks for your explanations

    well yeah, i could have searched for a topic that would answer my questions , but there are so many of them, and ive only been here recently so
     
  8. Jan 27, 2007 #7

    Gokul43201

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