Coherent light from a sodium-vapor lamp is passed through a filter that blocks everything except light of a single wavelength. It then falls on two slits separated by 0.46 mm. In the resulting interference pattern on a screen 2.2 m away, adjacent bright fringes are separated by 2.82 mm. alreren ] Calculate the wavelength of this sodium-vapor lamp, in SI units. X b) is the ms] Assume A = 500 nm and the distance to the last bright fringe is 16.74 mm. What is the maximum number N of bright fringes including the central fringe and those on both sides of it, that can appear on the viewing screen? N =

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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.