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Point particles?

  1. Apr 10, 2005 #1
    point particles???

    this is a simple question, do photon's and the other point particles have a very small mass, or do they defy the E=MC^2 equation???
     
  2. jcsd
  3. Apr 10, 2005 #2

    dextercioby

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    Yeah,in principle,that equation is valid for relativistic elementary hence pointlike particles...

    And the photon has 0 mass...

    Daniel.
     
  4. Apr 10, 2005 #3
    The answer is that E = mc^2 only holds for massive bodies at rest.
     
  5. Apr 11, 2005 #4

    Meir Achuz

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    Point or extended particles obey E^2=p^2+m^2.
     
  6. Apr 11, 2005 #5

    dextercioby

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    Real elementary particles...

    Daniel.
     
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