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Split from Spectroscopy Discussion Thread

  1. Feb 4, 2006 #1
    A laser in visible is used in Raman spectroscopy and the resultant spectrum is in IR and Microwave region(which means molecular vibrations and rotations are excited), what type of interaction is this that induces these levels? ( I cannot think more than..."To be Raman active molecules should posses anisotropic polarizability".)my question is how vibration or rotation can be excited during the scattering? (As the source used is visible, I think some basic understanding is missing from my side)
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  3. Feb 10, 2006 #2
    THis is all very foreign to me and several semesters away, but...

    reading through Pauling's General Chemistry, there is a sketch of a simple spectrocope.

    It is simply a network of a telescope positioned towards a prism at an angle respective to a collimator. The objective is to use a light source to shine through the collimator, refract it into the prism to allow the light to be seen by the observer looking through the telescope. It also states that a ruled grating can be substituted for diffraction.

    I have a telescope but no prism and collimator. But if I were to buy a collimator, prism, and a ruled grating, what kind of results what I get back using this system, what could I possibly achieve?
    Last edited: Feb 10, 2006
  4. Feb 11, 2006 #3


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    Just a note that I've moved these posts from the Spectroscopy Discussion Thread. The original post in that thread seemed to get eaten by the PF Gremlins, and as a result, the discussion drifted off topic. These are questions worthy of their own thread.
  5. Feb 11, 2006 #4


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    Note : This question has been answered in other places, like here. Photon79 is aware of this.

    So [Moonbear], you could probably delete the OP here and leave the thread with plastic photon's question. <and then delete this post too>
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