The yellow light from a sodium vapor lamp seems to be of pure wavelength, but it produces two first-order maxima at 36.093o and 36.129o when projected onto a 10,000 line per centimeter diffraction grating. a) What are the two wavelengths to a precision of 0.1 nm?  b) What is the vertical separation between the maxima when projected onto a wall 2.0 m from the diffraction grating?

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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.