A light, with wavelength of λ = 550 nm, passes through a slit and shines on a screen that is at a distance of L = 0.30 m. The slit has a width of D = 4.0x10-6 m. Calculate the width Y of the central bright fringe, see Figure first dark fringe D central bright fringe Y first dark fringe -L-

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Diffraction of light

In physics, the term diffraction is defined as the bending of light around the corners of the obstacle. As a light ray passes by an aperture, it bends around the edges or through slits, it spreads out through a narrow opening. The diffracted light will produce fringes of bright and dark or colored bands which are labeled as a diffraction pattern.