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Homework Help: Wave properties of an electron

  1. May 3, 2007 #1
    1. The problem statement, all variables and given/known data
    The resolving power of a microscope depends on the wavelength used. If one wishes to "see" an atom, a resolution of approximately 1.00 x 10^-11m would be required.
    a) If electrons are used (in an electron microscope), what minimum kinetic energy is required for the electrons?

    2. Relevant equations
    Ek = 1/2 mv^2 (kinetic energy equation)
    electron mass 9.11 x 10^-31kg
    c = wavelength x frequency

    3. The attempt at a solution
    using the kinetic energy equation, I have 2 variables to consider. velocity (v) and kinetic energy (Ek) and how does wavelength fit into the question?
  2. jcsd
  3. May 3, 2007 #2

    Andrew Mason

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    Science Advisor
    Homework Helper

    You have to use the De Broglie wavelength for the electron.

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