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Homework Help: De Broglie wavelength of particle of diameter X

  1. Mar 24, 2010 #1
    1. The problem statement, all variables and given/known data
    In an electrom microscope we wish to study paprticles of diameter about 0.10 µm (about 1000 times the size of a single atom).

    What should be the de Broglie wavelength of the electrons?
    Through what voltage should the electrons be accelerated to have that de Broglie wavelength?


    2. Relevant equations
    ?


    3. The attempt at a solution
    I know the equation

    wavelength = h / p,

    but that doesn't seem to get me anywhere, but that's the only equation for the de Broglie wavelength I know. Therefore, I should look for ways to find p by using the diameter of the particle, but a particle's size shouldn't matter towards its momentum.

    So is there are a couple of equations I'm missing, that can get me from the one given quantity of diameter to the wavelength?
     
  2. jcsd
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