Dispersion (Angular)

\frac{d θ}{d λ} = \frac{d θ}{d n} \cdot \frac{d n}{d λ}

Angular dispersion describes how much the angle of refraction changes with wavelength. It depends on both the prism geometry and the material's dispersion.

Variables

d\theta/d\lambda

Angular dispersion

rad/m

d\theta/dn

Rate of angle change with n

rad

dn/d\lambda

Material dispersion

1/m

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