24.3 Single Slit Diffraction and Diffraction Gratings

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Single Slit Diffraction and Diffraction Gratings

DIFFRACTION
Single Slit
Diffraction
a sin θdark = m λ           m = 0, ±1, ±2 ...
                                     a = slit width
                                     λ = wavelength
Diffraction
Gratings
d sin θbright = m λ           m = 0, ±1, ±2 ...
                                     a = slit separation
                                     λ = wavelength