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Problem in the Defination of electon's wavelength

  1. Dec 3, 2008 #1
    Given:
    [tex]\lambda = h / (mv) [/tex], whehere lambda is the wavelenght of electron, h Planck's constant, m the rest mass of electron and v the speed of electron.

    Problem:
    Does electron has a mass? I know it has a rest mass and thus contain energy. This problem is perhaps a defination problem.
     
  2. jcsd
  3. Dec 3, 2008 #2

    Doc Al

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    Staff: Mentor

    Sure the electron has a mass. (What would make you think otherwise?)
     
  4. Dec 3, 2008 #3
    electron mass = 9.109382 x 10 to the -31st power (in kg)
     
    Last edited: Dec 3, 2008
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