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Darkening (other)
Darkening may refer to: * Darkening (ophthalmology), vision loss or weakness that occurs without an apparent lesion affecting the eye * Darkening of Tristram, an event taking place prior and during '' Diablo'', during which the main antagonist Diablo tried to break free of his imprisonment and laid siege to the town of Tristram. It is also the name of the time-limited event in ''Diablo III'' that marks the anniversary of the first game's original release. * Darkening of Valinor, the destruction of the Two Trees of Valinor in the fictional universe of J. R. R. Tolkien's Middle-earth * Gravity darkening, an astronomical phenomenon * Hydrogen darkening, a physical degradation of the optical properties of glass * Limb darkening, the diminishing of intensity in the image of a star as one moves from the center to the edge See also * Dark (other) * Darken (other) * Darker (other) * Darkness (other) * Lighting Lighting or illumination is th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Darkening (ophthalmology)
Amaurosis (Greek meaning ''darkening'', ''dark'', or ''obscure'') is vision loss or weakness that occurs without an apparent lesion affecting the eye. It may result from either a medical condition or excess acceleration, as in flight. The term is the same as the Latin ''gutta serena'', which means, in Latin, ''drop clear'' (or ''drop bright''). ''Gutta serena'' is a condition of partial or complete blindness with a transparent, clear pupil. This term contrasts with ''suffusio nigra'' which means, in Latin, ''suffusion dark'', indicating partial or complete blindness with a dark pupil, e.g., a cataract. Milton, already totally blind for twelve years (some scholars think from retinal detachment; others have diagnosed glaucoma) by the time he published Paradise Lost, refers to these terms in Book 3, lines 25–26. Types Leber's congenital amaurosis is an inherited disease resulting in optic atrophy and secondary severe vision loss or blindness. It was first described by Theodore Leber ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diablo (video Game)
''Diablo'' is an action role-playing video game developed by Blizzard North and released by Blizzard Entertainment in January 1997, and is the first installment in the video game series of the same name. Set in the fictional Kingdom of Khanduras in the mortal realm, the player controls a lone hero battling to rid the world of Diablo, the Lord of Terror. Beneath the town of Tristram, the player journeys through sixteen randomly generated dungeon levels, ultimately entering Hell in order to face Diablo. An expansion pack, '' Diablo: Hellfire'', was released in November 1997 by Synergistic Software. In 1998, Electronic Arts released ''Diablo'' for the PlayStation. This version, developed by Climax Studios, featured direct control of the main character's direction using the PlayStation controller, as opposed to point-and-click movement. A Sega Saturn version was considered by Electronic Arts but never released. ''Diablo'' has been considered one of the greatest games of all time ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diablo III
''Diablo III'' is a hack-and-slash action role-playing game developed and published by Blizzard Entertainment as the third installment in the Diablo (series), ''Diablo'' franchise. It was released for Microsoft Windows and OS X in May 2012, PlayStation 3 and Xbox 360 in September 2013, PlayStation 4 and Xbox One in August 2014, and Nintendo Switch in November 2018. Set 20 years after the events of ''Diablo II'', players choose to play as one of seven character classes – Barbarian, Crusader, Demon Hunter, Monk, Necromancer, Witch Doctor, or Wizard – and are tasked with defeating the Lord of Terror, Diablo, as in previous games in the series. An expansion pack entitled ''Reaper of Souls'' was released for PC in March 2014. It was released for consoles as part of the ''Diablo III: Ultimate Evil Edition'' version in August 2014. The ''Diablo III: Rise of the Necromancer, Rise of the Necromancer'' pack was released for the Windows, macOS, and PlayStation 4 and Xbox One in June 201 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Darkening Of Valinor
Darkening may refer to: * Darkening (ophthalmology), vision loss or weakness that occurs without an apparent lesion affecting the eye * Darkening of Tristram, an event taking place prior and during '' Diablo'', during which the main antagonist Diablo tried to break free of his imprisonment and laid siege to the town of Tristram. It is also the name of the time-limited event in ''Diablo III'' that marks the anniversary of the first game's original release. * Darkening of Valinor, the destruction of the Two Trees of Valinor in the fictional universe of J. R. R. Tolkien's Middle-earth * Gravity darkening, an astronomical phenomenon * Hydrogen darkening, a physical degradation of the optical properties of glass * Limb darkening, the diminishing of intensity in the image of a star as one moves from the center to the edge See also * Dark (other) * Darken (other) * Darker (other) * Darkness (other) * Lighting Lighting or illumination is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravity Darkening
Gravity darkening, also referred to as gravity brightening, is an astronomical phenomenon where the poles of a star are brighter than the equator, due to rapid rotation and oblate shape. When a star is oblate, it has a larger radius at its equator than it does at its poles. As a result, the poles have a higher surface gravity, and thus higher temperature and pressure is needed to maintain hydrostatic equilibrium. Thus, the poles are "gravity brightened", and the equator "gravity darkened". The star becomes oblate (and hence gravity darkening occurs) because the centrifugal force resulting from rotation creates additional outward pressure on the star. The centrifugal force is expressed mathematically as : F_\text = m \Omega^2 \rho, where m is mass (in this case of a small volume element of the star), \Omega is the angular velocity, and \rho is the radial distance from the axis of rotation. In the case of a star, the value of \rho is largest at the equator and smallest at the poles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrogen Darkening
Hydrogen darkening is a physical degradation of the optical properties of glass. Free hydrogen atoms are able to bind to the SiO2 silica glass compound forming hydroxyl (OH)—a chemical compound that interferes with the passage of light through the glass. The problem is particularly relevant to fiber optic cables—particularly in oil and gas well An oil well is a drillhole boring in Earth that is designed to bring petroleum oil hydrocarbons to the surface. Usually some natural gas is released as associated petroleum gas along with the oil. A well that is designed to produce only gas m ...s where fiber optic cables are used for distributed temperature sensing (DTS). Hydrogen can be present due to the Cracking (chemistry), cracking of hydrocarbons in the well. The darkening of the fiber can distort the DTS reading and possibly render the DTS system inoperable due to the optical loss budget being exceeded. To prevent this, coatings such as carbon are applied to the fiber, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limb Darkening
Limb darkening is an optical effect seen in stars (including the Sun), where the central part of the disk appears brighter than the edge, or ''limb''. Its understanding offered early solar astronomers an opportunity to construct models with such gradients. This encouraged the development of the theory of radiative transfer. Basic theory Optical depth, a measure of the opacity of an object or part of an object, combines with effective temperature gradients inside the star to produce limb darkening. The light seen is approximately the integral of all emission along the line of sight modulated by the optical depth to the viewer (i.e. 1/e times the emission at 1 optical depth, 1/e2 times the emission at 2 optical depths, etc.). Near the center of the star, optical depth is effectively infinite, causing approximately constant brightness. However, the effective optical depth decreases with increasing radius due to lower gas density and a shorter line of sight distance through the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dark (other)
Dark most commonly refers to darkness, the absence of light. Dark or DARK may also refer to: * Evil, sinister or malign People * Dark (surname) Entertainment * ''Dark'' (TV series), a 2017 Netflix original German language science-fiction drama series * Dark (broadcasting), a broadcasting service that has ceased transmission * "Dark" (''Legend of the Seeker''), an episode of ''Legend of the Seeker'' * ''Dark'' (video game), a stealth/action video game * ''Dark'' (album), a 2012 album by Hwyl Nofio *"Dark", song by Prince from Come (Prince album) * Dark Mousy, a character in the anime ''D.N.Angel'' * G. M. Dark, a fictional character from the novel ''Something Wicked This Way Comes'' * DARK, a criminal organisation featured in the manga and anime ''Kikaider'' * D.A.R.K. (band) alt-rock band See also * * Dark Dark Dark (band) U.S. folk band * Dərk, Azerbaijan * Dark data * Dark Eye (other) * Dark triad The dark triad is a psychological theory of personality, fir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Darken (other)
Darken may refer to: * Lawrence Stamper Darken (1909–1978), American physical chemist and metallurgist * Rob Darken (born 1969), Polish heavy metal singer * Eric Darken, American percussionist, composer, and programmer * '' Darken'', a 2017 Canadian film * Darken Rahl, character from Terry Goodkind's ''The Sword of Truth'' series See also * Dark (other) * Darkening (other) Darkening may refer to: * Darkening (ophthalmology), vision loss or weakness that occurs without an apparent lesion affecting the eye * Darkening of Tristram, an event taking place prior and during '' Diablo'', during which the main antagonist Di ... * Darker (other) * Darkness (other) {{disambiguation, surname ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Darker (other)
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Darker may refer to: * ''Darker'' (album), a 1997 album by C-Tec * ''Darker'', a novel by Simon Clark * ''Darker'' (video game), a 1995 computer game by Psygnosis * ''Darker'' (magazine), a Russian horror webzine * Grant Dooks Darker (1898-1979), mycologists and taxonomist See also * Dharker, Indian-Pakistani family-/surname * Dark (other) Dark most commonly refers to darkness, the absence of light. Dark or DARK may also refer to: * Evil, sinister or malign People * Dark (surname) Entertainment * ''Dark'' (TV series), a 2017 Netflix original German language science-fiction dram ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Darkness (other)
Darkness is the absence of light. Darkness or The Darkness may also refer to: Film and television * ''Dark'' (TV series), a 2017 German-language TV series produced by Netflix * Darknss, a character from the film ''Legend'' (1985) * ''Darkness'' (1916 film), an Italian silent film * ''Darkness'' (1923 film), a British silent crime film * ''Darkness'' (1993 film), an American independent horror film * ''Darkness'' (2002 film), an English-language horror film * ''Darkness'', a 2009 Czech film directed by Juraj Herz * ''Darkness'' (2015 film), a Serbian film * ''Darkness'' (2019 film), an Italian drama film * "Darkness" (''The Secret Circle''), an episode of ''The Secret Circle'' * "Darkness" (''Stargate Universe''), an episode of the TV series ''Stargate Universe'' * The Darkness, a name for one of the man-eating lions in ''The Ghost and the Darkness'' (1996), a historical adventure film * The Darkness is the source of destruction of Wonderland in the animated film ''Wond ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
