This process can produce a Talbot carpet with reconstructions at fractional multiples of the Talbot length.  This process produces the same results for conjugate arrangements, as stated by Babinet's principle.  In some situations the effects of this process can be approximated using a sum of Fresnel zones.  Structures formed by this process include the Arago or Poisson spot and the Airy disk.  The wave nature of electrons and light was established by observing this phenomenon in the Davisson-Germer and Young double-slit experiments, respectively.  For 10 points, name this bending of wavefronts
This process can produce a Talbot carpet with reconstructions at fractional multiples of the Talbot length.  This process produces the same results for conjugate arrangements, as stated by Babinet's principle.  In some situations the effects of this process can be approximated using a sum of Fresnel zones.  Structures formed by this process include the Arago or Poisson spot and the Airy disk.  The wave nature of electrons and light was established by observing this phenomenon in the Davisson-Germer and Young double-slit experiments, respectively.  For 10 points, name this bending of wavefronts as they pass near an obstacle.
This process can produce a Talbot carpet with reconstructions at fractional multiples of the Talbot length.  
{diffraction}