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Huygens principle at the boundary of a volume

  1. May 15, 2015 #1
    Hi all, I have the next dude:

    To utilize the Huygens principle at the boundary of a volume, do we need to know precisely material properties inside the volume?

  2. jcsd
  3. May 15, 2015 #2


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    Homework Helper

    As far as I understand, Huygen's principle is outward looking. So the benefit is that you don't need to know anything about inside the volume, just the fields at the boundary.
  4. May 15, 2015 #3


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    Gold Member

    I think you first need to know the shape and position the wavefront before the secondary sources can be drawn. This probably means waiting until the beam emerges from the volume.
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