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Difference between relatavistic kinetic energy and normal kinetic energy

  1. Jan 13, 2010 #1
    I was looking at the relativistic energy of an electron and noticed that the formula for kinetic energy is:

    K.E. = mc^2 -m0c^2

    How is this related to the kinetic energy for low speed particles?
    Does anyone have a link to the proof?
  2. jcsd
  3. Jan 13, 2010 #2


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    This can be written as (Gamma - 1) m_0c^2. Do a taylor expansion of gamma and the result immediately follows.
  4. Jan 13, 2010 #3


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    Staff: Mentor

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