A pair of parallel slits separated by 1.60 ✕ 10−4 m is illuminated by 463 nm light and an interference pattern is observed on a screen 2.40 m from the plane of the slits. Calculate the difference in path lengths from each of the slits to the location on the screen of a third-order bright fringe and a third dark fringe. (Enter your answers in m.) (a) a third-order bright fringe m (b) a third dark fringe m

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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.