Scattering of light is the process by which light interacts with a material or object and is diverted in many directions. It is an important physical phenomenon that affects the way light travels and is a fundamental part of optics. Scattering can occur when light interacts with particles in the air, such as dust, pollen, and smoke, as well as with molecules and atoms in the atmosphere. It can also occur when light strikes a solid surface, such as a wall, a window, or a mirror. Scattering of light is the cause of phenomena such as the Tyndall effect, blue skies, rainbows, and sunsets.