The reflection of light occurs when an electromagnetic wave (light) is absorbed by an electron (particle) which gains kinetic energy (speed) and then releases its energy in the form of light. This effect can be explained classically by Thomson scattering and more recently Compton scattering. Some light is not reemitted due to resonance and retention of kinetic energy by the electron resulting in absorption. If the absorption is at a certain wavelength, the reflected light appears to be a certain color. Mirrors are able to create an image because they have a very smooth surface. This enables the surface to reflect light uniformly as opposed to scattering it in all directions like most objects.
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