![]() Smaller the length of opening higher will be the diffraction effect. However, as you have access to this content, a full PDF is available via the Save PDF. The diffractive effect seen in a set up depends on the length of the opening of the slit. HTML view is not available for this content. A good example of this is the diffraction we see is the blue colour of light This phenomenon can also take place when light is bent around particles that are on the same order of magnitude as the wavelength of the light. Both Interference and Diffraction are closely related to each other. Fraunhofer diffraction goes from the idea of a wave being split into several outgoing waves when passed through an aperture, slit or hole, and is usually. The lens produces at its focal plane the Fraunhofer diffraction pattern of the transparency When the transparency is placed exactly one focal distance behind the lens (i.e., zf ), the Fourier transform relationship is exact. The extent of bending depends upon the diameter of the slit. Diffraction of light occurs due to the bending of light at the corners of the opening.ĭiffraction is the phenomenon by which light bends while passing through the edge of a material or through a slit opening. Let the distance coordinates in the aperture plane be and the. ![]() In Fraunhofer diffraction, the diffraction pattern is independent of the distance to the screen, depending only on the angles to the screen from the aperture. As monochromatic light is an EM wave which has a single wavelength due to this behavior it is easy to trace the diffraction pattern produced by it. In not too clear a fashion, Abbe described Fraunhofer diffraction as a decomposition of a spatial distribution of light into a series of plane waves. Fraunhofer diffraction is the type of diffraction that occurs in the limit of small Fresnel number. Hint: In Fraunhofer diffraction, monochromatic light is used as a source of light which is placed behind the slit in the setup.
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