Mie Theory is a mathematical model that describes how light interacts with small particles, particularly those comparable in size to the wavelength of light. Developed by Gustav Mie in 1908, it explains the scattering of light by spherical particles, helping to understand phenomena like the color of the sky and the appearance of clouds. The theory is significant in fields such as optics, meteorology, and aerosol science. It provides insights into how particles scatter light, which is crucial for applications like remote sensing and understanding atmospheric conditions. Mie Theory helps scientists predict how light behaves in various environments.