WordNet

a swarthy complexion (同)duskiness, swarthiness
having a dark or somber color
an unilluminated area; "he moved off into the darkness" (同)dark, shadow
of or belonging to a racial group having dark skin especially of sub-Saharan African origin; "a great people--a black people--...injected new meaning and dignity into the veins of civilization"- Martin Luther King Jr.
the quality or state of the achromatic color of least lightness (bearing the least resemblance to white) (同)blackness, inkiness
(board games) the darker pieces
black clothing (worn as a sign of mourning); "the widow wore black"
(of the face) made black especially as with suffused blood; "a face black with fury" (同)blackened
offering little or no hope; "the future looked black"; "prospects were bleak"; "Life in the Aran Islands has always been bleak and difficult"- J.M.Synge; "took a dim view of things" (同)bleak, dim
(of events) having extremely unfortunate or dire consequences; bringing ruin; "the stock market crashed on Black Friday"; "a calamitous defeat"; "the battle was a disastrous end to a disastrous campaign"; "such doctrines, if true, would be absolutely fatal to my theory"- Charles Darwin; "it is fatal to enter any war without the will to win it"- Douglas MacArthur; "a fateful error" (同)calamitous, disastrous, fatal, fateful
stemming from evil characteristics or forces; wicked or dishonorable; "black deeds"; "a black lie"; "his black heart has concocted yet another black deed"; "Darth Vader of the dark side"; "a dark purpose"; "dark undercurrents of ethnic hostility"; "the scheme of some sinister intelligence bent on punishing him"-Thomas Hardy (同)dark, sinister
(used of conduct or character) deserving or bringing disgrace or shame; "Man...has written one of his blackest records as a destroyer on the oceanic islands"- Rachel Carson; "an ignominious retreat"; "inglorious defeat"; "an opprobrious monument to human greed"; "a shameful display of cowardice" (同)disgraceful, ignominious, inglorious, opprobrious, shameful
harshly ironic or sinister; "black humor"; "a grim joke"; "grim laughter"; "fun ranging from slapstick clowning ... to savage mordant wit" (同)grim, mordant
extremely dark; "a black moonless night"; "through the pitch-black woods"; "it was pitch-dark in the cellar" (同)pitch-black, pitch-dark
soiled with dirt or soot; "with feet black from playing outdoors"; "his shirt was black within an hour" (同)smutty
(of coffee) without cream or sugar
(of intelligence operations) deliberately misleading; "black propaganda"
being of the achromatic color of maximum darkness; having little or no hue owing to absorption of almost all incident light; "black leather jackets"; "as black as coal"; "rich black soil"
marked by anger or resentment or hostility; "black looks"; "black words"
total absence of light; "they fumbled around in total darkness"; "in the black of night" (同)lightlessness, blackness, pitch blackness, black
partial darkness

PrepTutorEJDIC

『暗さ』,『やみ』 / 徳黒さ / 無知,無学 / 邪悪,腹黒さ / 不明りょう,あいまいさ
『黒い』,黒色の / 『暗い』,まっ暗な(dark) / (特にアフリカ系)黒人の / 汚い(dirty),汚れた(soiled) / 陰気な(gloomy);不吉な;見通しの暗い / 怒った(angry);不きげんな(sullen) / 腹黒い,邪悪な(wicked, evil) / 《文》不名誉な / (コーヒーに)クリーム(牛乳)を入れない,ブラックの / 〈U〉『黒』,『黒色』 / 〈C〉《しばしば『B-』》黒人 / 〈U〉黒衣,(特に)喪服 / 黒くなる;暗くなる / …'を'黒くする;…'を'暗くする(blacken) / (靴墨で)〈靴〉'を'みがく

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2017/08/18 21:13:17」(JST)

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The Creation of Light, by Gustave Doré

Darkness, the polar opposite to brightness, is understood as a lack of illumination or an absence of visible light.

Humans are unable to distinguish color in conditions of either high brightness or darkness.^[1] In conditions of insufficient light, perception is achromatic and ultimately, black.

The emotional response to darkness has generated metaphorical usages of the term in many cultures.

Complete darkness is when the sun is more than 18 degrees below the horizon.

Scientific

Perception

Stare at the image for a minute, then look away. The image of Jesus in inverted color will appear.

The perception of darkness differs from the mere absence of light due to the effects of after images on perception. In perceiving, the eye is active, and the part of the retina that is unstimulated produces a complementary afterimage.^[2]

Physics

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, matte black paint does not reflect much visible light and appears dark, whereas white paint reflects lots of light and appears bright.^[3] For more information see color. An object may appear dark, but it may be bright at a frequency that humans cannot perceive.

A dark area has limited light sources, making things hard to see. Exposure to alternating light and darkness (night and day) has caused several evolutionary adaptations to darkness. When a vertebrate, like a human, enters a dark area, its pupils dilate, allowing more light to enter the eye and improving night vision. Also, the light detecting cells in the human eye (rods and cones) will regenerate more unbleached rhodopsin when adapting to darkness.

One scientific measure of darkness is the Bortle Dark-Sky Scale, which indicates the night sky's and stars' brightness at a particular location, and the observability of celestial objects at that location. (See also: Sky brightness)

Technical

The color of a point, on a standard 24-bit computer display, is defined by three RGB (red, green, blue) values, each ranging from 0-255. When the red, green, and blue components of a pixel are fully illuminated (255,255,255), the pixel appears white; when all three components are unilluminated (0,0,0), the pixel appears black.

Cultural

Artistic

Caravaggio's The Calling of St Matthew uses darkness for its chiaroscuro effects.

Artists use darkness to emphasize and contrast the presence of light. Darkness can be used as a counterpoint to areas of lightness to create leading lines and voids. Such shapes draw the eye around areas of the painting. Shadows add depth and perspective to a painting. See chiaroscuro for a discussion of the uses of such contrasts in visual media.

Color paints are mixed together to create darkness, because each color absorbs certain frequencies of light. Theoretically, mixing together the three primary colors, or the three secondary colors, will absorb all visible light and create black. In practice it is difficult to prevent the mixture from taking on a brown tint.

Literature

Separation of light and darkness on the first day of creation, from the Sistine Chapel ceiling by Michelangelo

As a poetic term in the Western world, darkness is used to connote the presence of shadows, evil, and foreboding, or in modern parlance, to connote that a story is grim, heavy, and/or depressing.

Religion

The first creation narrative in Christianity begins with darkness, into which is introduced the creation of light, and the separation of this light from the darkness (as distinct from the creation of the sun and moon on the fourth day of creation). Thus, although both light and darkness are included in the comprehensive works of the almighty God—darkness was considered "the second to last plague" (Exodus 10:21), and the location of "weeping and gnashing of teeth" (Matthew 8:12).

The Qur'an has been interpreted to say that those who transgress the bounds of what is right are doomed to "burning despair and ice-cold darkness" (Nab 78.25).^[4]

Philosophy

In Chinese philosophy Yin is the complementary feminine part of the Taijitu and is represented by a dark lobe.

Poetry

The use of darkness as a rhetorical device has a long-standing tradition. Shakespeare, working in the 16th and 17th centuries, made a character called the "prince of darkness" (King Lear: III, iv) and gave darkness jaws with which to devour love. (A Midsummer Night's Dream: I, i)^[5] Chaucer, a 14th-century Middle English writer of The Canterbury Tales, wrote that knights must cast away the "workes of darkness".^[6] In The Divine Comedy, Dante described hell as "solid darkness stain'd".^[7]

Language

In Old English there were three words that could mean darkness: heolstor, genip, and sceadu.^[8] Heolstor also meant "hiding-place" and became holster. Genip meant "mist" and fell out of use like many strong verbs. It is however still used in the Dutch saying "in het geniep" which means secretly. Sceadu meant "shadow" and remained in use. The word dark eventually evolved from the word deorc.^[9]

Greek mythology

Erebus was a primordial deity in Greek mythology, representing the personification of darkness.

References

^ "W. Wundt (1907): Outlines of Psychology - 6. Pure sensations.". uni-leipzig.de.
^ Horner, David T. (2000). Demonstrations of Color Perception and the Importance of Contours, Handbook for Teaching Introductory Psychology. 2. Texas: Psychology Press. p. 217. Afterimages are the complementary hue of the adapting stimulus and trichromatic theory fails to account for this fact
^ Mantese, Lucymarie (March 2000). "Photon-Driven Localization: How Materials Really Absorb Light". American Physical Society. Retrieved 2007-01-21.
^ "Online translation of The Quran". Retrieved November 2010. Check date values in: |access-date= (help)
^ Shakespeare, William. "The Complete Works". The Tech, MIT.
^ Chaucer, Geoffrey (14th century). The Canterbury Tales, and Other Poems. The Second Nun's Tale. Check date values in: |date= (help)
^ Alighieri, Dante; Francis, Henry, translator (14th century). The Divine Comedy. Check date values in: |date= (help)
^ Mitchell, Bruce; Fred C. Robinson (2001). A Guide to Old English. Glossary: Blackwell Publishing. pp. 332, 349, 363, 369. ISBN 0-631-22636-2.
^ Harper, Douglass (November 2001). "Dark". Online Etymology Dictionary. Retrieved 2007-01-18.

External links

The dictionary definition of darkness at Wiktionary
Quotations related to Darkness at Wikiquote
Media related to Darkness at Wikimedia Commons

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