the process of spreading out a beam of light or other wave systems due to passing through a small aperture or across an edge. This process is frequently accompanied by interference between the generated waveforms known as diffraction.
When a wave hits a barrier or opening, numerous events are referred to as diffraction. It is described as the bending of waves into the region of the geometric shadow of an opening or around the corners of an obstacle. Effectively, the diffracting thing or aperture turns into a secondary source of the wave.
The combination of two or more waves superimposed in one location results in interference. When a wavefront is split or broken by a wall or other obstruction, the result is called diffraction, which is the deviation that waves experience at the edges and corners. While there is no difference in the width of the fringes during diffraction and interference of light, there is a difference.
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