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De-Broglie equation proof

  1. Aug 15, 2011 #1
    de Broglie's eqn. proof goes this way:---

    E = m*c2
    E = h*c/L (L - Wavelength)

    the they are equated -

    m*c2=h*c/L
    => L=h/(m*c)

    But in E=m*c^2, m is the mass lost by some body to give energy E not mass of photon,
    then why do we consider m mass of photon ??
    By considering that we find equivalent eqn.--

    L=h/(m*v)
    for any mass m.
    Isn't that wrong??
     
  2. jcsd
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