1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Wave dispersion

  1. Nov 28, 2009 #1
    Let us assume we possess a line radiator. It's extent is infinite and it radiates 360*.

    As far as I understand, an expanding spherical wave of order 0 is not dispersive. I assume an expanding cylindrical wave of order 0 would possess dispersion, however I am not certain.

    Could any members offer insight on this?

    Best Regards,
    Thadman:biggrin:
     
  2. jcsd
  3. Nov 28, 2009 #2
    i don't think any radiated wave can be dispersive in a vacuum, because all wavelengths travel at the same velocity. To be non-dispersive, there can not be any (wavelength dependent) attenuation either, because dispersion and attenuation are coupled through the dispersion relations. See
    http://en.wikipedia.org/wiki/Dispersion_relation
    Bob S
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook




Loading...