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Problem with wave optics - diffraction grating?
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[QUOTE="orsanyuksek2013, post: 5026516, member: 522582"] The grating formula is m λ = d (sin β + sin α) where m: Diffraction order λ: Wavelength of the incoming light d: Grating constant β: Angle between the incoming light and the grating normal α: Angle between the outgoing light (dispersed light) and the grating normal (exit angle) In the question above β = 0° and m = 1. So λ = d sin 30° and the d is asked. Note that, for each wavelength the exit angle is different. Therefore you have to consider the wavelength, 550 nm (400 nm + 700 nm) / 2 as a reference wavelength. In this case d = 1,1 x 10^(-6) m. That is, the grating must have 1 / d = 909 l / mm. ---------------------------- Örsan Yüksek [/QUOTE]
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Introductory Physics Homework Help
Problem with wave optics - diffraction grating?
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