Light from a sodium lamp passes through a diffraction
Chapter 33, Problem 33.9(choose chapter or problem)
Light from a sodium lamp passes through a diffraction grating having 1000 slits per millimeter. The interference pattern is viewed on a screen 1.000 m behind the grating. Two bright yellow fringes are visible 72.88 cm and 73.00 cm from the central maximum. What are the wavelengths of these two fringes?
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