- Diffusion results from any material that scatters light during reflection or transmission.
- Scattering takes place when streams of photons (or waves of light) are deflected in different directions.
- All objects obey the law of reflection on a microscopic level. If the irregularities on the surface of an object are larger than the wavelength of light, the light undergoes diffusion.
- Transparent and translucent materials transmit diffuse light unless their surfaces are perfectly flat and their interiors are free of any foreign material.
- When diffuse light falls on an object or scene it produces softened effects without sharp detail.
- A mirror-like reflection free of the effects of diffusion is called a specular reflection.
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