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Question on thermionic emission

  1. Oct 3, 2013 #1
    The electron needs greater energy than the work function in order to escape the material. But when it does escape, does it subtract the work function from it's kinetic energy or not?
  2. jcsd
  3. Oct 3, 2013 #2


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    Gold Member

    It does indeed expend the work function's worth of energy in escaping the material.
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