Dispersion

#Physics
Smaller wavelength light gets refracted more in prisms. Basically, light shone through a prism "disperses"
3b1b Video Explaining Dispersion on an atomic level with simple harmonic oscillator

$\displaystyle n=\frac{ck}{\omega}\cong \frac{Nq^{2}}{2m{\varepsilon}{0}}\sum{j} \frac{f_{j}(\omega_{j}^{2}-\omega ^{2})}{(\omega_{j}^{2}-\omega ^{2})^{2}+\gamma_{j}^{2}\omega ^{2}}$

• Index of refraction for a medium undergoing disperision

$\displaystyle n=1+A\left( 1+\frac{B}{\lambda ^{2}} \right)$