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Homework Help: Units for wave vector and other?

  1. Jun 10, 2010 #1
    Last edited by a moderator: Apr 25, 2017
  2. jcsd
  3. Jun 11, 2010 #2


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    Hi Readinglevel^! :smile:

    The wave-number of a wave is 2π divided by the wavelength, so it has dimensions of one over length, and is measured in units of m-1 … see http://en.wikipedia.org/wiki/Wave_vector" [Broken]

    h-bar is the reduced Planck constant, equal to the Planck constant (h) divided by 2π … see http://en.wikipedia.org/wiki/Planck_constant" [Broken]

    h and h-bar both have dimensions of energy over frequency, or energy times time, and so are measured in units of J.s (joule-seconds), or eV.s :smile:
    Last edited by a moderator: May 4, 2017
  4. Jun 11, 2010 #3
    Alright, thank you very much! The units had me all messed up.
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