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Spherical wavefront, after refraction??..

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hars...@gmail.com

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Aug 19, 2008, 12:01:59 PM8/19/08
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Well, a straight lined wavefront will emerge out, after refraction as
a straight lined wavefront.
But in the case of spherical wavefront, what happens to its geometry
after refraction? Does it emerge out as a spherical wavefront or some
undefined shape? Well, after some discussions with my friend, we
concluded that it is not a spherical wavefront, but can anyone say why
is it so (i mean physically and not the proof) and what will be the
refracted wavefront's shape?
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