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Mass, speed

  1. Oct 24, 2011 #1

    jayaramas

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    do all mass less particles travel at the speed of light?
     
    jayaramas, Oct 24, 2011
  2. jcsd
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  3. Oct 24, 2011 #2

    Doc Al

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    Staff: Mentor

    Yes.
     
    Doc Al, Oct 24, 2011
  4. Oct 24, 2011 #3

    Phrak

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    Why?
     
    Phrak, Oct 24, 2011
  5. Oct 24, 2011 #4

    Naty1

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    PHRAK.....Stop teasing Doc Al!!

    Best answer I know: that's what we observe.
     
    Naty1, Oct 24, 2011
  6. Oct 26, 2011 #5

    Phrak

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    But I was just getting started...

    First we have "particles" and they're "moving", and this is supposed to be physics 200 years after Newton.
     
    Phrak, Oct 26, 2011
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