Fresnel Diffraction
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Fraunhofer Diffraction
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The
source and the screen are at finite distance from the diffracting aperture
|
The source and the screen are at
infinite distance from the diffracting aperture
|
Near field diffraction
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Far field
diffraction
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The
wave fronts are divergent and are either spherical and cylindrical
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The wave fronts are planar which
is realized by using convex lenses
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No
mirror or lenses are used for observation
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Diffracted light is collected by
lens as in a telescope
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