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Which theory explains behavior of photon?

  1. Jul 6, 2015 #1
    Which theory explains the complete behavior of photon, Quantum mechanics, Quantum field theory, String theory or Quantum Gravity? Like in young's double slit experiment, photon will go through 1st slit or 2nd slit.
  2. jcsd
  3. Jul 6, 2015 #2


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    Staff: Mentor

    Quantum electrodynamics (QED), which is an example of a quantum field theory.
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