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Looking at one's surrounding environment, the vast majority of visible objects are seen primarily by diffuse reflection from their surface. This holds with few exceptions, such as glass, reflective liquids, polished or smooth metals, glossy objects, and objects that themselves emit light: the Sun, lamps, and computer screens (which, however, emit ''diffuse'' light). Outdoors it is the same, with perhaps the exception of a transparent water stream or of the iridescent colors of a beetle. Additionally, [[Rayleigh scattering]] is responsible for the blue color of the sky, and [[Mie scattering]] for the white color of the water droplets of clouds.
Light scattered from the surfaces of objects is by far the primary light which humans visually observe.<ref name="z">{{cite
|author=Kerker, M.
|title=The Scattering of Light
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In [[3D computer graphics]], diffuse interreflection is an important component of [[global illumination]]. There are a number of ways to model diffuse interreflection when rendering a scene. [[Radiosity (3D computer graphics)|Radiosity]] and [[photon mapping]] are two commonly used methods.
==Spectroscopy==
Diffuse reflectance can be used to determine the absorption spectra of powdered samples in cases where transmission spectroscopy is not feasible. This applies to [[Ultraviolet–visible spectroscopy|UV-Vis-NIR]] spectroscopy or [[Diffuse reflectance infrared fourier transform spectroscopy|mid-infrared spectroscopy]].<ref name="Griffiths">{{Cite journal|last=Fuller|first=Michael P.|last2=Griffiths|first2=Peter R.|date=1978|title=Diffuse reflectance measurements by infrared Fourier transform spectrometry|url=https://pubs.acs.org/doi/abs/10.1021/ac50035a045|journal=Analytical Chemistry|language=en|volume=50|issue=13|pages=1906–1910|doi=10.1021/ac50035a045|issn=0003-2700}}</ref><ref name="Kortuem">{{Cite book|url=https://www.worldcat.org/oclc/714802320|title=Reflectance spectroscopy Principles, methods, applications.|last=Kortüm|first= Gustav|date=1969|publisher=Springer|isbn=9783642880711|___location=Berlin|oclc=714802320}}</ref>
==See also==
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