Light Emitting Diodes (LEDS) are semiconductor devices that emit light at specific wavelengths without emitting at any other wavelengths. LEDS can be used to create lasers that are very compact since they are a solid state device. A pair of narrow, parallel slits separated by 0.258 mm are illuminated by the green LED laser (λ = 546.1 nm). The interference pattern is observed on a screen 1.15 m from the plane of the parallel slits. (a) Calculate the distance from the central maximum to the first bright region. m (b) What is the distance between the first and second dark fringes? m Additional Materials Reading Submit Answer

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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.