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Huygens-Fresnel principle and Diffraction

  1. Mar 29, 2009 #1
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Mar 29, 2009 #2
    You can check out Introduction To Modern Optics by Fowles for a classical mathematical description of the phenomenon. This book casts Huygen's principle into the Fresnel-Kirchhoff Formula and then applies it in several settings. If you think about it, shrinking the aperture localizes the disturbance to a "point-like" area. When the disturbance then propagates (towards the left in the picture), the "point-like" area bothers all of its surrounding neighbors, which bother their neighbors, etc...; symmetrically. It is like dropping a pebble in a pond and producing a circular wavefront.
    Last edited: Mar 29, 2009
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