일반물리학 2 · Diffraction · Problem 4
일반물리학 2 — Diffraction: Problem 4
4 A diffraction grating is made up of slits of width 300 nm with separation 900 nm. The grating is illuminated by monochromatic plane waves of wavelength \(\lambda = 656 \text{ nm}\) at normal incidence. (a) How many maxima are there in the full diffraction pattern? (b) What is the angular width of a spectral line observed in the first order if the grating has 1000 slits?
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