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Diffraction

Fraunhofer Diffraction

Single Slit Aperture

Circular Aperture

Diffraction Grating

Polarization

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Single Slit Aperture

In this case, the diffracting aperture is a single long, narrow slit of width a. The resulting Fraunhofer diffraction pattern has intensity minima located by

 where m is the diffraction order and l is the wavelength.