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Kig 'Yar
Kig 'Yar

Number of posts : 141
Age : 32
Registration date : 2010-10-13

PostSubject: Darkness   Wed Oct 13, 2010 10:19 am

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"Dark" redirects here. For other uses, see Dark (disambiguation).
This article is about the absence of light. For other uses, see Darkness (disambiguation).
Light shining on a part of a bush. Where light is not reflected, there is darkness.
An optical illusion. Square A is exactly the same shade of grey as Square B. Darkness is relative. See Same color illusion.
Main article: Lightness (color)

Darkness, in contrast with brightness, is a relative absence of visible light. It is the appearance of black in a color space. When light is not present, rod and cone cells within the eye are not stimulated. This lack of stimulation means photoreceptor cells are unable to distinguish color frequency and wavelength. The resulting perception is achromatic and in the case of darkness, black.[1] The emotional reaction to darkness has metaphorical importance in many cultures.

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