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The Creation of Light by Gustave Doré. Darkness is the condition resulting from a lack of illumination, or an absence of visible light.. Human vision is unable to distinguish colors in conditions of very low luminance because the hue-sensitive photoreceptor cells on the retina are inactive when light levels are insufficient, in the range of visual perception referred to as scotopic vision.
Elliott connects 'Dark Ages' to the "Myth of Progress", also observed by Joseph Tainter, who says, "There is genuine bias against so-called 'Dark Ages'" because of a modern belief that society normally traverses from lesser to greater complexity, and when complexity is reduced during a collapse, this is perceived as out of the ordinary and thus ...
"Hopscotch to oblivion" in Barcelona, Spain, alluding to suicide A cemetery with a "Dead End" sign, creating a play on words. Black comedy, also known as black humor, bleak comedy, dark comedy, dark humor, gallows humor or morbid humor, is a style of comedy that makes light of subject matter that is generally considered taboo, particularly subjects that are normally considered serious or ...
Dark triad characteristics correlate with support for various extremist ideologies. Support for the alt-right, which was prolifically associated with online trolling and harassment, and politically correct authoritarianism both correlate with all three traits as well as measures of entitlement.
The use of dark subjects dramatically lit by a shaft of light from a single constricted and often unseen source, was a compositional device developed by Ugo da Carpi (c. 1455 – c. 1523), Giovanni Baglione (1566–1643), and Caravaggio (1571–1610), the last of whom was crucial in developing the style of tenebrism, where dramatic chiaroscuro ...
The Greek Dark Ages (c. 1200–800 BC) were earlier regarded as two continuous periods of Greek history: the Postpalatial Bronze Age (c. 1200–1050 BC) [1] and the Prehistoric Iron Age or Early Iron Age (c. 1050–800 BC), the last included all the ceramic phases from the Protogeometric to the Middle Geometric [1] and lasted until the beginning of the Protohistoric Iron Age around 800 BC.
In astronomy, dark matter is an invisible and hypothetical form of matter that does not interact with light or other electromagnetic radiation.Dark matter is implied by gravitational effects which cannot be explained by general relativity unless more matter is present than can be observed.
The density of dark matter in an expanding universe decreases more quickly than dark energy, and eventually the dark energy dominates. Specifically, when the volume of the universe doubles, the density of dark matter is halved, but the density of dark energy is nearly unchanged (it is exactly constant in the case of a cosmological constant).