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Wavelike nature of matter

  1. Jul 31, 2014 #1


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    De broglie had proposed that matter had wave character.
    Which wave does he mean? Transverse or longitudinal?
  2. jcsd
  3. Jul 31, 2014 #2


    Staff: Mentor

    Its an outmoded idea, replaced by the transformation theory of Dirac about 1927, and is generally what goes under the name of quantum mechanics today.

    The following is a better place to start understanding QM:

  4. Jul 31, 2014 #3
    Both. Moving charges generate traveling waves propagating in transverse directions. But they also generate evanescent waves in a longitudinal direction.

    Since electron diffraction experiments can be explained both according to de Broglie's formula and classical EM when considering measurements in a macroscopic setting, and since both are linear (superposition applies), we can assume a basic compatibility exists between the two.

    But I would want to be careful about saying "matter had a wave character". I don't recall anything of that flavor said by de Broglie. He said that there is a wave associated with an electron or particle. The wave arises from movement of the particle and disappears if there is no motion.
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