Waves
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  Dust can create Waves in many way:
      1D-Waves: Longitudinal/Transversal in
                x-direction
      2D-Waves: Longitudinal/Transversal in
                x-y-direction
      3D-Waves: Spherical/Faked

  Wave-Parameters:
       amplitude
       wavelength
       source|sourceXY|sourceXYZ
       phase
       damping
  A Damping-factor of 1.0 means: at a distance=wavelength
  from the source you get the amplitude=1/2*(amplitude at
  the source).

  Interferences:
  To interfere some waves you have to apply it sequentially
  (superpose).