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Particles or Waves?

  1. May 31, 2005 #1
    If we use a normal gun sending out one bullet at a time, there is obviously no interference. However there is interference in waves. Still, if we send out electrons one at a time, they interfere with each other’s motion. Why is it so? Aren’t electrons particles?
  2. jcsd
  3. May 31, 2005 #2
    The wave function of an electron is a quantity to say something about the probability of finding the electron in space. Bohr's probability interpretation "connect's" the wave nature with the particle nature of quantas.
  4. May 31, 2005 #3
    Firing bullets

    The reason electrons interfere while bullets do not is because bullets are very very large and hence have very small wavelengths, so the probability distribution of the interference pattern is seen as essentially gaussian. Refer to Feynamn Volume 3, Chapter on double slit experiment (chapters 1,2 or 3 i believe).
  5. Jun 2, 2005 #4
    Bullets do interfere. To see them interfere in a two-slit experiment, you would
    have to launch them with a low enough momentum so that the wavlength was comparable
    to the slit width.
  6. Jun 2, 2005 #5
    And looking at a sufficient distance apart from the slits. :biggrin:

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