Section 38

(b) Calculate the dispersion in first order for light with a mean wavelength of 550 nm, analyzed with a grating having 8 000 rulings/cm, and projected onto a screen 2.40 m away. 68. Derive Equation 38.12 for the resolving power of a grating, R = Nm, where N is the number of slits illuminated and m is the order in the diffraction pattern. ................
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