This page explains the scattering of light, focusing on why the sky appears blue and sunsets look red based on light's wavelength and atmospheric particles. Elastic scattering is discussed, with two t...This page explains the scattering of light, focusing on why the sky appears blue and sunsets look red based on light's wavelength and atmospheric particles. Elastic scattering is discussed, with two types: Rayleigh and large-particle scattering. Turbidimetry and nephelometry, techniques that measure scattered radiation, are compared. The choice between them depends on particle concentration and size. Applications include water clarity and cation/anion determination.
