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Photon and Energy

  1. Nov 26, 2015 #1
    When a photon is emitted by an atom is the energy of the atom conserved?
  2. jcsd
  3. Nov 26, 2015 #2


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    Science Advisor
    Homework Helper

    The creation of a photon leaving the atom must imply that the energy of the atom must have changed.
  4. Nov 26, 2015 #3


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    Staff: Mentor

    The energy of the emitted photon plus the atom after emission is the same as the energy of the atom before emission.
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