![]() The pattern observed is a fringed image of the source and in a particular direction. Fraunhofer Diffraction: Fraunhofer diffraction occurs with plane wave-fronts with the object situated at infinity. ![]() The waves are spherical and the pattern observed is a fringed image of the object.ΔΆ. Fresnel Diffraction: Fresnel diffraction occurs when light from a point source meets an obstacle. Whereas if the two are closer in size or equal, the amount of bending is noticeable and can be easily seen with the naked eye. So If the opening is greater than the wavelength of light, the bending will be almost negligible. But the proportion of bending depends on the relative size of the wavelength of light to the size of the opening. We can define Diffraction as bending of light when it passes around the edge of an object. When the light falls on the obstacle whose size is comparable with the wavelength of light then the light bends around the obstacle and enters the geometrical shadow.
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