A student and his lab partner create a single slit by carefully aligning two razor blades to a separation of 0.400 mm. When a helium–neon laser at 543 nm illuminates the slit, a diffraction pattern is observed on a screen 2.15 m beyond the slit. Calculate the angle ?dark to the first minimum in the diffraction pattern and the width of the central maximum.

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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.