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Tuesday, December 13, 2011


  • It only participates in EM interactions.
  • Strong and weak interactions are not in photon domain of experience.
  • When particle annihilate with anti particles the end product is often protons.
  • Photon is its own anti particle.
  • Under some circumstances it can disappear and can create particle -anti particle pair.
  • Rest mass of photon is zero.
  • Photon is a boson with angular momentum equal to 1.
  • Spin of photon is 1

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