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What absorbs the photon

  1. Nov 20, 2004 #1
    In the case of say, radion in the IR spectrum, which causes molecules to vibrate and heat up, what particle is absorbing the photon? Is it just the molecule as a whole?
  2. jcsd
  3. Nov 20, 2004 #2
    According to the standard model, any particle with charge can absorb the photon. Typically, however, it will be electrons that do the absorbing of transverse photons.
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