Cross-section and types of scattering
https://en.wikipedia.org/wiki/Cross_section_(physics)
dimensionality σ∼(cm)2
resonant scattering at high frequencies σ∼1ω2
Rayleigh scattering https://en.wikipedia.org/wiki/Rayleigh_scattering
σ∼1ω4
dimensionality σ∼(cm)2
resonant scattering at high frequencies σ∼1ω2
σ∼1ω4