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Darkness, the polar opposite to brightness, is understood to be an absence of visible light. It is also the appearance of black in a colored space. In terms of physics, an object is said to be dark when it absorbs photons, causing it to appear dim compared to other objects. For example, a matte black paint does not reflect much visible appears dark, whereas white paint reflects much light bright. For more information see color. An object may appear dark, but it may be bright at a frequency that humans cannot perceive.