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Impossible color

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439: 455: 471: 3079: 367: 225: 2520: 40: 100: 2530: 1894: 506:, either in its real part or in its imaginary parts. For red-and-green, some saw an even field of the new color; some saw a regular pattern of just-visible green dots and red dots; some saw islands of one color on a background of the other color. Some of the volunteers for the experiment reported that afterward, they could still imagine the new colors for a period of time. 48: 404:. Exploration of the color space outside the range of "real colors" by this means is major corroborating evidence for the opponent-process theory of color vision. Chimerical colors can be seen while seeing with one eye or with both eyes, and are not observed to reproduce simultaneously qualities of opposing colors (e.g. "yellowish blue"). Chimerical colors include: 201: 338:
primary colors, but since the region of real colors is bounded by a smooth curve, there will always be some colors near its edges that are left out. For this reason, primary colors are often chosen that are outside of the region of real colors—that is, imaginary or fictitious primary colors—in order to capture the greatest area of real colors.
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Hsieh and Tse in 2006 disputed the existence of colors forbidden by opponency theory and claimed they are, in reality, intermediate colors. However, by their own account their methods differed from Crane and Piantanida: "They stabilized the border between two colors on the retina using an eye tracker
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These mimic the effect of glowing material, even when viewed on a medium such as paper, which can only reflect and not emit its own light. For example, to see "self-luminous red": staring at green causes a red afterimage, then on looking at white, the red is seen against the white and may seem to be
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device that had a field of a vertical red stripe adjacent to a vertical green stripe, or several narrow alternating red and green stripes (or in some cases, yellow and blue instead). The device could track involuntary movements of one eye (there was a patch over the other eye) and adjust mirrors so
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tells the story of a color of the same name (represented as an earthy shade of beige) that is segregated by the other colors found in the rainbow, flags and elsewhere, because flicts is rare, seen as uncharacteristic, and therefore undervalued; at the end of the book, flicts finds its place as the
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These are impossibly highly saturated. For example, to see "hyperbolic orange": staring at bright cyan causes an orange afterimage, then on looking at orange, the resulting orange afterimage seen against the orange background may cause an orange color purer than the purest orange color that can be
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Some observers indicated that although they were aware that what they were viewing was a color (that is, the field was not achromatic), they were unable to name or describe the color. One of these observers was an artist with large color vocabulary. Other observers of the novel hues described the
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When defining primaries, the goal is often to leave as many real colors in gamut as possible. Since the region of real colors is not a triangle (see illustration), it is not possible to pick three real colors that span the whole region. The gamut can be increased by selecting more than three real
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have some overlap in the wavelengths of light to which they respond, so it is more efficient for the visual system to record differences between the responses of cones, rather than each type of cone's individual response. The opponent color theory suggests that there are three opponent channels:
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This led them to propose a "soft-wired model of cortical color opponency", in which populations of neurons compete to fire and in which the "losing" neurons go completely silent. In this model, eliminating competition by, for instance, inhibiting connections between neural populations can allow
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chosen to be as near as possible to pure red, green, and blue, within the area of real colors. Because of this, these displays inevitably exhibit colors nearest to real colors lying within its gamut triangle, rather than exact matches to real colors that plot outside of it. The specific gamuts
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suggest different hypothetical colors that humans are incapable of perceiving for one reason or another, and fictional colors are routinely created in popular culture. While some such colors have no basis in reality, phenomena such as cone cell fatigue enable colors to be perceived in certain
415:, then on looking at black, the blue is seen as blue against the black, also as dark as the black. The color is not possible to achieve through normal vision, because the lack of incident light (in the black) prevents saturation of the blue/yellow chromatic signal (the blue appearance). 494:
the image would follow the eye and the boundaries of the stripes were always on the same places on the eye's retina; the field outside the stripes was blanked with occluders. Under such conditions, the edges between the stripes seemed to disappear (perhaps due to edge-detecting
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color theories, which treat intensity and chroma as separate visual signals, provide a biophysical explanation of these chimerical colors. For example, staring at a saturated primary-color field and then looking at a white object results in an opposing shift in hue, causing an
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of the colors from subject to subject: two colors are equiluminant for an observer when rapidly alternating between the colors produces the least impression of flickering. The 2001 experiment was similar but controlled for luminance. They had these observations:
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Some works of fiction have mentioned fictional colors outside of the normal human visual spectrum that have not been observed yet and whose observation may require advanced technology, different physics, or magic. Introduction of a new color is often an
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is an imaginary color that can be seen temporarily by looking steadily at a strong color until some of the cone cells become fatigued, temporarily changing their color sensitivities, and then looking at a markedly different color. The direct
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linked to deflector mirrors, whereas we relied on visual fixation." Hsieh and Tse do not compare their methods to Billock and Tsou, and do not cite their work, even though it was published five years earlier in 2001. See also
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excites only one sort of cone. If, for example, M cones could be excited alone, this would make the brain see an imaginary color greener than any physically possible green. Such a "hyper-green" color would be in the
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The color opponent process is a color theory that states that the human visual system interprets information about color by processing signals from cone and rod cells in an antagonistic manner. The three types of
326:, additive mixture results in color along the line between the colors being mixed. By mixing any three colors, one can therefore create any color contained in the triangle they describe—this is called the 186:
Responses to one color of an opponent channel are antagonistic to those to the other color, and signals output from a place on the retina can contain one or the other but not both, for each opponent pair.
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intending to deliver additional information to the reader. Such colors are primarily discussed in literary works, as they are currently impossible to visualize (when a new color is shown in the episode
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According to the opponent-process theory, under normal circumstances, there is no hue that could be described as a mixture of opponent hues; that is, as a hue looking "redgreen" or "yellowblue".
758: â€“ Methods of visualizing information by translating to colors, an image that depicts an object in colors that differ from those that a visible-colors-only photograph would show. 527:
We found that when colors were equiluminant, subjects saw reddish greens, bluish yellows, or a multistable spatial color exchange (an entirely novel perceptual phenomena [
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In 2001, Vincent A. Billock and Gerald A. Gleason and Brian H. Tsou set up an experiment to test a theory that the 1983 experiment did not control for variations in the perceived
1373: 502:, overriding the opponency mechanisms and producing not the color expected from mixing paints or from mixing lights on a screen, but new colors entirely, which are not in the 214:
diagram. The white regions outside the black line correspond to imaginary colors. (The colors in this figure do not reproduce the actual colors in the diagram, due to the
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Some subjects (4 out of 7) described transparency phenomena—as though the opponent colors originated in two depth planes and could be seen, one through the other. ...
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Some people may be able to see the color "yellow–blue" in this image by letting their eyes cross so that both + symbols are on top of each other. In this image, both
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responses in one eye that cannot be produced by the eye in normal circumstances seeing any possible light spectrum. No physical object can have an imaginary color.
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Some people may be able to see the color "red-green" in this image by letting their eyes cross so that both + symbols are on top of each other. In this image, both
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available to commercial display devices vary by manufacturer and model and are often defined as part of international standards—for example, the gamut of
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These are simultaneously dark and impossibly saturated. For example, to see "stygian blue": staring at bright yellow causes a dark blue
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curve of medium-wavelength ("M") cone cells overlaps those of short-wavelength ("S") and long-wavelength ("L") cone cells. Light of any
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By staring at a "fatigue template" for 20–60 seconds, then switching to a neutral target, it is possible to view "impossible" colors.
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Takahashi, Shigeko; Ejima, Yoshimichi (1984). "Spatial properties of red-green and yellow-blue perceptual opponent-color response".
1293: 1257: 859: 147: 121: 1033:"Perception of forbidden colors in retinally stabilized equiluminant images: an indication of softwired cortical color opponency?" 2308: 723:. In the show, pleurigloss is described as "the color of when a soldier comes home from war and sees his dog for the first time”. 2853: 2533: 2487: 2303: 2292: 582:," wherein the titular monster is theorized to have been a color beyond human senses, rendering the monster itself invisible. 579: 125: 474:
Most people see very bright colored concentric circles in this pattern, if it is printed and rotated at around 150–300 rpm.
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In computer and television screen color displays, the corners of the gamut triangle are defined by commercially available
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that interacts with M cones also interacts with S or L cones, or both, to some extent. Therefore, no wavelength and no
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includes a species who can see a color whose name is translated as "plaid" (including a reference to "alpha plaid").
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Macpherson, F. (2021) ‘Novel Colour Experiences and Their Implications’, in D. Brown and F. Macpherson (eds.)
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Hibino, H (1992). "Red-green and yellow-blue opponent-color responses as a function of retinal eccentricity".
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Churchland, Paul (2005). "Chimerical Colors: Some Phenomenological Predictions from Cognitive Neuroscience".
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Although they cannot be seen, imaginary colors are often found in the mathematical descriptions that define
1071: 2601: 2358: 717:"Pleurigloss" is the favorite color of the immortal afterlife-being Michael from the 2020 television show 611: 1001:
Suarez J; Suarez, Juan (2009). "Reddish Green: A Challenge for Modal Claims About Phenomenal Structure".
677:", resembling a "fluorescent greenish-yellow purple" color, which can be seen only by magicians and cats. 2710: 2282: 2037: 1581: 1502: 1367: 685: 617: 3063: 1756: 3036: 3031: 3026: 3006: 2657: 2652: 2647: 2642: 2552: 2255: 1938: 1926: 1339: 1047: 951: 768: 591: 503: 463: 447: 401: 323: 282: 269: 207: 56: 3021: 3113: 3046: 3011: 2984: 1970: 1902: 1098:"Illusory color mixing upon perceptual fading and filling-in does not result in "forbidden colors"" 669: 643: 635: 622: 380: 3051: 2881: 2662: 2385: 1791: 1699: 1593: 1443: 1406: 983: 967: 924: 3058: 850:(3rd ed.). England: Fountain Press. pp. 39–46 for the basis in the physiology of the 2926: 2677: 2624: 2495: 2448: 2045: 1860: 1799: 1751: 1684: 1679: 1657: 1586: 1435: 1398: 1355: 1289: 1236: 1209: 1203: 1179: 1173: 1149: 1143: 1119: 1063: 975: 942:
Crane, Hewitt D.; Piantanida, Thomas P. (1983). "On Seeing Reddish Green and Yellowish Blue".
855: 627: 543: 475: 470: 78: 1283: 1230: 2886: 2695: 2443: 2438: 2418: 2413: 2176: 1943: 1821: 1771: 1766: 1738: 1704: 1564: 1427: 1390: 1347: 1109: 1055: 1010: 959: 916: 711: 610:, is named after an otherwise unnamed color, usually not observable by humans, generated by 392: 384: 215: 161: 43:
The human eye's red-to-green and blue-to-yellow values of each one-wavelength visible color
3108: 3001: 2961: 2951: 2946: 2941: 2916: 2901: 2705: 2687: 2473: 2463: 2458: 2423: 2325: 2161: 2108: 1998: 1931: 1746: 1662: 1640: 746: â€“ Producing colors by combining the primary or secondary colors in different amounts 660: 607: 586: 486: 334:. Any colors outside of this triangle cannot be obtained by mixing the chosen primaries. 1343: 1051: 955: 3103: 2523: 2468: 2453: 2433: 2428: 2211: 2025: 2020: 1848: 1826: 1761: 1633: 1598: 1571: 794: 787: 719: 654: 575: 533:]); when the colors were nonequiluminant, subjects saw spurious pattern formation. 319: 1351: 803: â€“ Type of color vision with four types of cone cells, having four primary colors 366: 3097: 2408: 1993: 1879: 1804: 1781: 1721: 1645: 1628: 1534: 1431: 1394: 1145:
The Greenwood Encyclopedia of Science Fiction and Fantasy: Themes, Works, and Wonders
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Black versus white (this is achromatic and detects light–dark variation or luminance)
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It is possible however to see colours that aren't in reality. Impossible colours...
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chromaticity diagram in the blank area above the colored area and between the
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color pairs are provided. It may be necessary to zoom to adjust the image.
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color pairs are provided. It may be necessary to zoom to adjust the image.
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of two real colors is also a real color. When colors are displayed in the
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Globalization, Utopia and Postcolonial Science Fiction: New Maps of Hope
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becoming fatigued) and the colors flowed into each other in the brain's
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Billock, Vincent A.; Tsou, Brian H. (2010). "Seeing Forbidden Colors".
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Macpherson, F. (2003) "Novel Colours and the Content of Experience",
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description of vision cannot explain these colors, which can involve
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of tripartite color models, and 54–57 for chromaticity coordinates.
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color of the moon. (After being gifted an English copy of the book,
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One of the earliest examples of fictional colors comes from the
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Color that cannot be perceived under ordinary viewing conditions
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World-Builders on World-Building: An Exploration of Subcreation
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Billock, Vincent A.; Gerald A. Gleason; Brian H. Tsou (2001).
529: 459: 443: 93: 740:, a color blended with small amounts of complementary colors. 599:, which mentions two new primary colors, "ulfire" and "jale". 234:
uses fictitious green and blue primaries to obtain a broader
66:: respectively the short-, medium- and long-wavelength types. 626:(1963) mentions "the eighth color" made visible during the 354:
was developed into a standard (IEC 61966-2-1:1999 ) by the
752: â€“ Ability to perceive differences in light frequency 710:(2019), which take place in a shared universe created by 3076:
For the vision capacities of organisms or machines, see
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Unsourced material may be challenged and 86:circumstances that would not be otherwise. 2567: 2553: 2545: 2529: 2321: 2066: 1909: 1539: 1517: 1503: 1495: 657:signed it and wrote "The moon is flicts.") 1481:"Hyperbolic Orange and the River to Hell" 1113: 884:International Electrotechnical Commission 356:International Electrotechnical Commission 148:Learn how and when to remove this message 2298:International Commission on Illumination 1003:Philosophy and Phenomenological Research 469: 453: 437: 1460:https://doi.org/10.1111/1468-0114.00162 1208:. Taylor & Francis. pp. 116–. 1026: 1024: 812: 2288:Color Association of the United States 1365: 7: 1178:. Fantagraphics Books. p. 640. 673:(1983), describes the eighth color " 261:that corresponds to combinations of 216:limitations of RGB computer displays 126:adding citations to reliable sources 1256:Kurland, Daniel (2 February 2016). 511:first stimulus as a reddish-green. 434:Colors outside physical color space 391:imposed by the trichromatic model. 2152:Blue–green distinction in language 1235:. Palgrave Macmillan. p. 74. 585:Popular examples include the 1920 25: 1352:10.1038/scientificamerican0210-72 1096:Hsieh, P.-J.; Tse, P. U. (2006). 3078: 3077: 2528: 2519: 2518: 2309:International Colour Association 1892: 1479:Bradbury, Aaron (1 March 2014). 1456:Pacific Philosophical Quarterly, 1015:10.1111/j.1933-1592.2009.00247.x 429:made by any normally seen light. 301:Imaginary colors in color spaces 223: 199: 98: 77:that do not appear in ordinary 34:Reddish, Greater Manchester, UK 2304:International Color Consortium 2293:International Colour Authority 1354:(inactive 18 September 2024). 1: 2369:List of Crayola crayon colors 964:10.1126/science.221.4615.1078 387:signals outside the physical 1432:10.1016/0042-6989(92)90055-n 1395:10.1016/0042-6989(84)90075-0 1115:10.1016/j.visres.2005.11.030 633:Philip K. Dick's 1969 novel 2172:Traditional colors of Japan 1949:Achromatic colors (Neutral) 1832:Multi-primary color display 1606:Spectral power distribution 278:spectral power distribution 3135: 2990:Colour Index International 1172:Alexander Theroux (2017). 304: 159: 31: 3074: 2582: 2514: 2032:Color realism (art style) 1890: 1690:Evolution of color vision 921:10.1080/09515080500264115 683:'s science fiction novel 578:1893 horror short story " 2349:List of colors (compact) 2167:Color in Chinese culture 1817:Digital image processing 1550:Electromagnetic spectrum 909:Philosophical Psychology 646:'s 1969 children's book 422:brighter than the white. 324:CIE 1931 XYZ color space 232:ProPhoto RGB color space 2354:List of colors by shade 1202:Mark J.P. Wolf (2020). 1060:10.1364/JOSAA.18.002398 820:MacEvoy, Bruce (2005). 667:series that began with 639:mentions a color "rej". 604:The Colour Out of Space 564:" of the animated show 60:(shown here normalized) 2359:List of color palettes 1229:Eric D. Smith (2012). 1142:Gary Westfahl (2005). 535: 513: 479: 467: 451: 371: 67: 62:of the three kinds of 44: 2283:Color Marketing Group 2038:On Vision and Colours 1971:Tinctures in heraldry 1582:Structural coloration 1487:on 12 November 2020. 1285:A Deepness in the Sky 1282:Vernor Vinge (2007). 769:electromagnetic waves 686:A Deepness in the Sky 618:Marion Zimmer Bradley 522: 508: 473: 457: 441: 369: 305:Further information: 50: 42: 3007:Federal Standard 595 2587:List of color spaces 2364:List of color spaces 2256:Tint, shade and tone 2139:Cultural differences 1954:Polychromatic colors 1939:Complementary colors 1927:Monochromatic colors 846:Hunt, R. W. (1998). 592:A Voyage to Arcturus 504:CIE 1931 color space 464:Natural Color System 448:Natural Color System 418:Self-luminous colors 283:CIE 1931 color space 270:spectral sensitivity 122:improve this section 2344:List of colors: N–Z 2339:List of colors: G–M 2334:List of colors: A–F 1344:2010SciAm.302b..72B 1332:Scientific American 1052:2001JOSAA..18.2398B 956:1983Sci...221.1078C 822:"Light and the eye" 670:The Colour of Magic 636:Galactic Pot-Healer 623:The Colors of Space 606:," a 1927 story by 402:complementary color 289:-axis and the line 242:that are available. 3119:Nonexistent things 2391:List of web colors 2386:List of RAL colors 1792:Color reproduction 1757:LĂźscher color test 1594:Color of chemicals 1468:London: Routledge. 1316:. 21 October 2016. 480: 468: 452: 372: 179:Blue versus yellow 79:visual functioning 68: 57:sensitivity curves 55:is defined by the 45: 3091: 3090: 2542: 2541: 2482: 2481: 2264: 2263: 2056: 2055: 2046:Theory of Colours 1888: 1887: 1800:Color photography 1752:Color preferences 1695:Impossible colors 1685:Color vision test 1680:Color temperature 1658:Color calibration 1587:Animal coloration 1242:978-0-230-35447-0 1215:978-0-429-51601-6 1185:978-1-60699-976-9 1155:978-0-313-32951-7 950:(4615): 1078–80. 756:False-color image 642:Brazilian writer 544:binocular rivalry 476:Alternate version 425:Hyperbolic colors 362:Chimerical colors 158: 157: 150: 71:Impossible colors 18:Impossible colour 16:(Redirected from 3126: 3081: 3080: 3067: 2696:RGB color spaces 2569: 2562: 2555: 2546: 2532: 2531: 2522: 2521: 2322: 2188:Color dimensions 2177:Human skin color 2067: 1944:Analogous colors 1910: 1896: 1822:Color management 1739:Color psychology 1705:Opponent process 1621:Color perception 1540: 1519: 1512: 1505: 1496: 1491: 1483:. Archived from 1451: 1414: 1377: 1371: 1363: 1318: 1317: 1306: 1300: 1299: 1279: 1273: 1272: 1270: 1268: 1253: 1247: 1246: 1226: 1220: 1219: 1199: 1190: 1189: 1175:Einstein's Beets 1169: 1160: 1159: 1139: 1128: 1127: 1117: 1093: 1087: 1086: 1084: 1082: 1076: 1070:. Archived from 1037: 1028: 1019: 1018: 998: 992: 991: 939: 933: 932: 904: 895: 894: 892: 890: 872: 866: 865: 848:Measuring Colour 843: 837: 836: 834: 832: 817: 712:Failbetter Games 580:The Damned Thing 393:Opponent process 376:chimerical color 352:sRGB color space 320:additive mixture 257:is a point in a 251:fictitious color 227: 203: 191:Imaginary colors 176:Red versus green 162:Opponent process 153: 146: 142: 139: 133: 102: 94: 90:Opponent process 21: 3134: 3133: 3129: 3128: 3127: 3125: 3124: 3123: 3094: 3093: 3092: 3087: 3070: 3061: 2995:CI list of dyes 2972: 2966: 2922:Imaginary color 2870: 2760: 2706:rg chromaticity 2682: 2629: 2596: 2578: 2573: 2543: 2538: 2510: 2478: 2395: 2313: 2270: 2260: 2183: 2162:Blue in culture 2133: 2052: 1999:Secondary color 1975: 1932:black-and-white 1904: 1897: 1884: 1786: 1772:National colors 1767:Political color 1747:Color symbolism 1733: 1663:Color constancy 1641:Color blindness 1615: 1572:Spectral colors 1529: 1523: 1478: 1475: 1426:(10): 1955–64. 1420:Vision Research 1417: 1383:Vision Research 1380: 1364: 1329: 1326: 1324:Further reading 1321: 1308: 1307: 1303: 1296: 1281: 1280: 1276: 1266: 1264: 1255: 1254: 1250: 1243: 1228: 1227: 1223: 1216: 1201: 1200: 1193: 1186: 1171: 1170: 1163: 1156: 1141: 1140: 1131: 1108:(14): 2251–58. 1102:Vision Research 1095: 1094: 1090: 1080: 1078: 1077:on 10 June 2010 1074: 1035: 1030: 1029: 1022: 1000: 999: 995: 941: 940: 936: 906: 905: 898: 888: 886: 874: 873: 869: 862: 845: 844: 840: 830: 828: 819: 818: 814: 810: 730: 661:Terry Pratchett 587:science fiction 552: 487:Hewitt D. Crane 436: 364: 309: 303: 255:imaginary color 247: 246: 245: 244: 243: 228: 220: 219: 204: 193: 164: 154: 143: 137: 134: 119: 103: 92: 37: 28: 23: 22: 15: 12: 11: 5: 3132: 3130: 3122: 3121: 3116: 3111: 3106: 3096: 3095: 3089: 3088: 3075: 3072: 3071: 3069: 3068: 3056: 3055: 3054: 3044: 3039: 3034: 3029: 3024: 3019: 3014: 3009: 3004: 2999: 2998: 2997: 2987: 2982: 2976: 2974: 2968: 2967: 2965: 2964: 2959: 2954: 2949: 2944: 2939: 2934: 2929: 2924: 2919: 2914: 2909: 2904: 2899: 2894: 2889: 2884: 2878: 2876: 2872: 2871: 2869: 2868: 2863: 2858: 2857: 2856: 2846: 2845: 2844: 2834: 2833: 2832: 2827: 2822: 2817: 2807: 2806: 2805: 2795: 2794: 2793: 2783: 2782: 2781: 2770: 2768: 2762: 2761: 2759: 2758: 2753: 2748: 2743: 2741:SMPTE 240M/"C" 2738: 2733: 2728: 2723: 2718: 2713: 2708: 2703: 2698: 2692: 2690: 2684: 2683: 2681: 2680: 2675: 2670: 2665: 2660: 2655: 2650: 2645: 2639: 2637: 2631: 2630: 2628: 2627: 2622: 2617: 2612: 2606: 2604: 2598: 2597: 2595: 2594: 2589: 2583: 2580: 2579: 2574: 2572: 2571: 2564: 2557: 2549: 2540: 2539: 2537: 2536: 2526: 2515: 2512: 2511: 2509: 2508: 2503: 2498: 2492: 2490: 2484: 2483: 2480: 2479: 2477: 2476: 2471: 2466: 2461: 2456: 2451: 2446: 2441: 2436: 2431: 2426: 2421: 2416: 2411: 2405: 2403: 2397: 2396: 2394: 2393: 2388: 2383: 2378: 2377: 2376: 2366: 2361: 2356: 2351: 2346: 2341: 2336: 2330: 2328: 2319: 2315: 2314: 2312: 2311: 2306: 2301: 2295: 2290: 2285: 2280: 2274: 2272: 2266: 2265: 2262: 2261: 2259: 2258: 2253: 2248: 2247: 2246: 2241: 2236: 2231: 2226: 2216: 2215: 2214: 2204: 2203: 2202: 2191: 2189: 2185: 2184: 2182: 2181: 2180: 2179: 2174: 2169: 2164: 2158:Color history 2156: 2155: 2154: 2143: 2141: 2135: 2134: 2132: 2131: 2126: 2121: 2116: 2111: 2106: 2101: 2096: 2091: 2086: 2081: 2075: 2073: 2064: 2058: 2057: 2054: 2053: 2051: 2050: 2042: 2041:(Schopenhauer) 2034: 2029: 2026:Color analysis 2023: 2021:Color triangle 2018: 2013: 2008: 2003: 2002: 2001: 1996: 1985: 1983: 1977: 1976: 1974: 1973: 1968: 1963: 1958: 1957: 1956: 1951: 1946: 1941: 1936: 1935: 1934: 1918: 1916: 1907: 1899: 1898: 1891: 1889: 1886: 1885: 1883: 1882: 1877: 1872: 1871: 1870: 1869: 1868: 1858: 1857: 1856: 1841: 1840: 1839: 1834: 1827:Color printing 1824: 1819: 1814: 1813: 1812: 1807: 1796: 1794: 1788: 1787: 1785: 1784: 1779: 1774: 1769: 1764: 1762:Kruithof curve 1759: 1754: 1749: 1743: 1741: 1735: 1734: 1732: 1731: 1724: 1719: 1718: 1717: 1712: 1702: 1697: 1692: 1687: 1682: 1677: 1676: 1675: 1665: 1660: 1655: 1654: 1653: 1648: 1638: 1637: 1636: 1634:Sonochromatism 1625: 1623: 1617: 1616: 1614: 1613: 1608: 1603: 1602: 1601: 1591: 1590: 1589: 1584: 1574: 1569: 1568: 1567: 1562: 1557: 1546: 1544: 1537: 1531: 1530: 1524: 1522: 1521: 1514: 1507: 1499: 1493: 1492: 1474: 1473:External links 1471: 1470: 1469: 1462: 1458:84(1): 43-66. 1452: 1415: 1378: 1325: 1322: 1320: 1319: 1301: 1294: 1274: 1248: 1241: 1221: 1214: 1191: 1184: 1161: 1154: 1129: 1088: 1020: 993: 934: 896: 867: 860: 838: 811: 809: 806: 805: 804: 798: 795:Spectral color 792: 788:Shades of Grey 784: 765: 759: 753: 747: 741: 729: 726: 725: 724: 720:The Good Place 715: 690: 678: 658: 655:Neil Armstrong 640: 631: 615: 612:alien entities 608:H.P. Lovecraft 600: 583: 576:Ambrose Bierce 551: 548: 435: 432: 431: 430: 426: 423: 419: 416: 409: 408:Stygian colors 363: 360: 348:chromaticities 332:primary colors 302: 299: 229: 222: 221: 205: 198: 197: 196: 195: 194: 192: 189: 184: 183: 180: 177: 160:Main article: 156: 155: 106: 104: 97: 91: 88: 83:color theories 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 3131: 3120: 3117: 3115: 3112: 3110: 3107: 3105: 3102: 3101: 3099: 3085: 3073: 3065: 3060: 3057: 3053: 3050: 3049: 3048: 3045: 3043: 3040: 3038: 3035: 3033: 3030: 3028: 3025: 3023: 3020: 3018: 3015: 3013: 3010: 3008: 3005: 3003: 3000: 2996: 2993: 2992: 2991: 2988: 2986: 2983: 2981: 2978: 2977: 2975: 2973:and standards 2971:Color systems 2969: 2963: 2960: 2958: 2955: 2953: 2950: 2948: 2945: 2943: 2940: 2938: 2935: 2933: 2930: 2928: 2925: 2923: 2920: 2918: 2915: 2913: 2910: 2908: 2905: 2903: 2900: 2898: 2895: 2893: 2890: 2888: 2885: 2883: 2880: 2879: 2877: 2873: 2867: 2864: 2862: 2859: 2855: 2852: 2851: 2850: 2847: 2843: 2840: 2839: 2838: 2835: 2831: 2828: 2826: 2823: 2821: 2818: 2816: 2813: 2812: 2811: 2808: 2804: 2801: 2800: 2799: 2796: 2792: 2789: 2788: 2787: 2784: 2780: 2777: 2776: 2775: 2772: 2771: 2769: 2767: 2763: 2757: 2754: 2752: 2749: 2747: 2744: 2742: 2739: 2737: 2734: 2732: 2729: 2727: 2724: 2722: 2719: 2717: 2714: 2712: 2709: 2707: 2704: 2702: 2699: 2697: 2694: 2693: 2691: 2689: 2685: 2679: 2676: 2674: 2671: 2669: 2668:CIELUV (1976) 2666: 2664: 2663:CIELAB (1976) 2661: 2659: 2656: 2654: 2651: 2649: 2646: 2644: 2641: 2640: 2638: 2636: 2632: 2626: 2623: 2621: 2618: 2616: 2613: 2611: 2608: 2607: 2605: 2603: 2599: 2593: 2590: 2588: 2585: 2584: 2581: 2577: 2570: 2565: 2563: 2558: 2556: 2551: 2550: 2547: 2535: 2527: 2525: 2517: 2516: 2513: 2507: 2504: 2502: 2499: 2497: 2494: 2493: 2491: 2489: 2485: 2475: 2472: 2470: 2467: 2465: 2462: 2460: 2457: 2455: 2452: 2450: 2447: 2445: 2442: 2440: 2437: 2435: 2432: 2430: 2427: 2425: 2422: 2420: 2417: 2415: 2412: 2410: 2407: 2406: 2404: 2402: 2398: 2392: 2389: 2387: 2384: 2382: 2379: 2375: 2372: 2371: 2370: 2367: 2365: 2362: 2360: 2357: 2355: 2352: 2350: 2347: 2345: 2342: 2340: 2337: 2335: 2332: 2331: 2329: 2327: 2323: 2320: 2316: 2310: 2307: 2305: 2302: 2299: 2296: 2294: 2291: 2289: 2286: 2284: 2281: 2279: 2276: 2275: 2273: 2271:organizations 2267: 2257: 2254: 2252: 2249: 2245: 2242: 2240: 2237: 2235: 2232: 2230: 2227: 2225: 2222: 2221: 2220: 2217: 2213: 2212:Pastel colors 2210: 2209: 2208: 2205: 2201: 2198: 2197: 2196: 2193: 2192: 2190: 2186: 2178: 2175: 2173: 2170: 2168: 2165: 2163: 2160: 2159: 2157: 2153: 2150: 2149: 2148: 2145: 2144: 2142: 2140: 2136: 2130: 2127: 2125: 2122: 2120: 2117: 2115: 2112: 2110: 2107: 2105: 2102: 2100: 2097: 2095: 2092: 2090: 2087: 2085: 2082: 2080: 2077: 2076: 2074: 2072: 2068: 2065: 2063: 2059: 2048: 2047: 2043: 2040: 2039: 2035: 2033: 2030: 2027: 2024: 2022: 2019: 2017: 2014: 2012: 2009: 2007: 2004: 2000: 1997: 1995: 1994:Primary color 1992: 1991: 1990: 1987: 1986: 1984: 1982: 1978: 1972: 1969: 1967: 1964: 1962: 1961:Light-on-dark 1959: 1955: 1952: 1950: 1947: 1945: 1942: 1940: 1937: 1933: 1930: 1929: 1928: 1925: 1924: 1923: 1920: 1919: 1917: 1915: 1911: 1908: 1906: 1900: 1895: 1881: 1880:Color mapping 1878: 1876: 1873: 1867: 1864: 1863: 1862: 1859: 1855: 1852: 1851: 1850: 1847: 1846: 1845: 1842: 1838: 1835: 1833: 1830: 1829: 1828: 1825: 1823: 1820: 1818: 1815: 1811: 1808: 1806: 1805:Color balance 1803: 1802: 1801: 1798: 1797: 1795: 1793: 1789: 1783: 1782:Chromotherapy 1780: 1778: 1775: 1773: 1770: 1768: 1765: 1763: 1760: 1758: 1755: 1753: 1750: 1748: 1745: 1744: 1742: 1740: 1736: 1730: 1729: 1725: 1723: 1722:Tetrachromacy 1720: 1716: 1713: 1711: 1708: 1707: 1706: 1703: 1701: 1698: 1696: 1693: 1691: 1688: 1686: 1683: 1681: 1678: 1674: 1671: 1670: 1669: 1666: 1664: 1661: 1659: 1656: 1652: 1649: 1647: 1646:Achromatopsia 1644: 1643: 1642: 1639: 1635: 1632: 1631: 1630: 1629:Chromesthesia 1627: 1626: 1624: 1622: 1618: 1612: 1609: 1607: 1604: 1600: 1597: 1596: 1595: 1592: 1588: 1585: 1583: 1580: 1579: 1578: 1575: 1573: 1570: 1566: 1563: 1561: 1558: 1556: 1553: 1552: 1551: 1548: 1547: 1545: 1543:Color physics 1541: 1538: 1536: 1535:Color science 1532: 1527: 1520: 1515: 1513: 1508: 1506: 1501: 1500: 1497: 1490: 1486: 1482: 1477: 1476: 1472: 1467: 1463: 1461: 1457: 1453: 1449: 1445: 1441: 1437: 1433: 1429: 1425: 1421: 1416: 1412: 1408: 1404: 1400: 1396: 1392: 1389:(9): 987–94. 1388: 1384: 1379: 1375: 1369: 1361: 1357: 1353: 1349: 1345: 1341: 1337: 1333: 1328: 1327: 1323: 1315: 1311: 1305: 1302: 1297: 1295:9781429915090 1291: 1287: 1286: 1278: 1275: 1263: 1259: 1252: 1249: 1244: 1238: 1234: 1233: 1225: 1222: 1217: 1211: 1207: 1206: 1198: 1196: 1192: 1187: 1181: 1177: 1176: 1168: 1166: 1162: 1157: 1151: 1147: 1146: 1138: 1136: 1134: 1130: 1125: 1121: 1116: 1111: 1107: 1103: 1099: 1092: 1089: 1073: 1069: 1065: 1061: 1057: 1053: 1049: 1045: 1041: 1034: 1027: 1025: 1021: 1016: 1012: 1009:(2): 346–91. 1008: 1004: 997: 994: 989: 985: 981: 977: 973: 969: 965: 961: 957: 953: 949: 945: 938: 935: 930: 926: 922: 918: 915:(5): 527–60. 914: 910: 903: 901: 897: 885: 881: 877: 871: 868: 863: 861:0-86343-387-1 857: 853: 849: 842: 839: 827: 823: 816: 813: 807: 802: 801:Tetrachromacy 799: 796: 793: 790: 789: 785: 782: 778: 774: 770: 766: 763: 760: 757: 754: 751: 748: 745: 742: 739: 735: 734:Bastard color 732: 731: 727: 722: 721: 716: 713: 709: 708: 707:Sunless Skies 703: 702: 697: 696: 695:Fallen London 691: 688: 687: 682: 679: 676: 672: 671: 666: 662: 659: 656: 651: 650: 645: 641: 638: 637: 632: 629: 625: 624: 620:in her novel 619: 616: 613: 609: 605: 601: 598: 597:David Lindsay 594: 593: 588: 584: 581: 577: 573: 572: 571: 569: 568: 563: 562:Reincarnation 558: 549: 547: 545: 539: 534: 532: 531: 525: 521: 518: 512: 507: 505: 501: 500:visual cortex 497: 492: 488: 483: 477: 472: 465: 461: 456: 449: 445: 440: 433: 427: 424: 420: 417: 414: 410: 407: 406: 405: 403: 399: 394: 390: 386: 382: 377: 368: 361: 359: 357: 353: 349: 344: 339: 335: 333: 329: 325: 321: 316: 314: 308: 300: 298: 296: 292: 288: 284: 279: 275: 271: 266: 264: 260: 256: 252: 241: 237: 233: 226: 217: 213: 209: 202: 190: 188: 181: 178: 175: 174: 173: 170: 163: 152: 149: 141: 131: 127: 123: 117: 116: 112: 107:This section 105: 101: 96: 95: 89: 87: 84: 80: 76: 72: 65: 61: 58: 54: 49: 41: 35: 30: 19: 3084:Color vision 2921: 2592:Color models 2244:Fluorescence 2207:Colorfulness 2200:Dichromatism 2044: 2036: 2006:Chromaticity 1989:Color mixing 1981:Color theory 1914:Color scheme 1777:Chromophobia 1726: 1694: 1488: 1485:the original 1465: 1455: 1423: 1419: 1386: 1382: 1368:cite journal 1338:(2): 72–77. 1335: 1331: 1313: 1304: 1284: 1277: 1265:. Retrieved 1261: 1251: 1231: 1224: 1204: 1174: 1144: 1105: 1101: 1091: 1079:. Retrieved 1072:the original 1043: 1039: 1006: 1002: 996: 947: 943: 937: 912: 908: 887:. Retrieved 880:IEC Webstore 879: 870: 847: 841: 829:. Retrieved 825: 815: 786: 767:Non-visible 750:Color vision 744:Color mixing 718: 705: 704:(2015), and 699: 693: 684: 681:Vernor Vinge 668: 647: 634: 621: 590: 565: 553: 540: 536: 528: 526: 523: 514: 509: 484: 481: 381:trichromatic 375: 373: 340: 336: 317: 313:color spaces 310: 294: 290: 286: 267: 254: 250: 248: 212:chromaticity 210:color space 185: 165: 144: 135: 120:Please help 108: 81:. Different 70: 69: 59: 51:Human color 29: 3062: [ 3017:ICC profile 2576:Color space 2381:Color chart 2239:Iridescence 2071:Basic terms 2062:Color terms 2016:Color wheel 2011:Color solid 1875:Color space 1861:subtractive 1844:Color model 1715:Unique hues 1611:Colorimetry 1577:Chromophore 889:24 November 773:radio waves 762:Middle gray 701:Sunless Sea 491:eye-tracker 350:defined by 307:Color space 259:color space 3114:Perception 3098:Categories 2907:Hexachrome 2716:Wide-gamut 2658:UVW (1964) 2653:YUV (1960) 2648:RGB (1931) 2643:XYZ (1931) 2401:Shades of: 2234:Brightness 1966:Web colors 1922:Color tool 1905:philosophy 1810:Color cast 1710:Afterimage 1700:Metamerism 1673:Color code 1668:Color task 1651:Dichromacy 808:References 777:microwaves 771:, such as 550:In fiction 413:afterimage 398:afterimage 385:saturation 274:wavelength 169:cone cells 64:cone cells 3059:JIS Z8102 2842:Rec. 2100 2830:Rec. 2100 2825:Rec. 2020 2756:Rec. 2100 2751:Rec. 2020 2251:Grayscale 2224:Lightness 2219:Luminance 2028:(fashion) 1728:The dress 1081:21 August 929:144906744 852:human eye 826:Handprint 738:color gel 665:Discworld 663:, in his 517:luminance 485:In 1983, 343:phosphors 263:cone cell 240:colorants 138:June 2022 109:does not 53:sensation 3022:ISCC–NBS 2912:HSL, HSV 2897:Coloroid 2892:ColorADD 2820:Rec. 709 2815:Rec. 601 2746:Rec. 709 2736:Rec. 601 2721:ProPhoto 2678:CIECAM16 2673:CIECAM02 2625:CIECAM16 2610:CIECAM02 2524:Category 2506:Lighting 2229:Darkness 2049:(Goethe) 1849:additive 1837:Quattron 1448:10997569 1360:20128226 1124:16469353 1068:11583256 988:34878248 980:17736657 728:See also 698:(2009), 675:octarine 567:Futurama 557:allegory 208:CIE 1931 3042:Pantone 3037:Ostwald 3027:Munsell 2932:OSA-UCS 2488:Related 2449:Magenta 2374:history 2278:Pantone 1565:Visible 1560:Rainbow 1440:1287992 1411:2440866 1403:6506487 1340:Bibcode 1314:TV Club 1267:14 July 1262:Vulture 1048:Bibcode 972:1691544 952:Bibcode 944:Science 644:Ziraldo 630:travel. 496:neurons 400:of the 130:removed 115:sources 3109:Vision 3082:  2882:CcMmYK 2731:DCI-P3 2501:Qualia 2496:Vision 2444:Purple 2439:Violet 2419:Yellow 2414:Orange 2109:Orange 2104:Purple 2094:Yellow 1528:topics 1446:  1438:  1409:  1401:  1358:  1292:  1239:  1212:  1182:  1152:  1122:  1066:  986:  978:  970:  927:  858:  783:, etc. 781:X-rays 649:Flicts 589:novel 75:colors 3104:Color 3066:] 2927:Oklab 2875:Other 2866:YCoCg 2861:xvYCC 2849:YPbPr 2837:ICtCp 2810:YCbCr 2791:SECAM 2786:YDbDr 2726:scRGB 2711:Adobe 2620:CAM16 2534:Index 2474:Black 2464:White 2459:Brown 2424:Green 2326:Lists 2318:Names 2300:(CIE) 2269:Color 2129:Brown 2124:White 2114:Black 2084:Green 1903:Color 1599:Water 1555:Light 1526:Color 1444:S2CID 1407:S2CID 1075:(PDF) 1036:(PDF) 984:S2CID 968:JSTOR 925:S2CID 831:5 May 389:gamut 328:gamut 236:gamut 3052:list 2985:ANPA 2980:ACES 2937:PCCS 2887:CMYK 2803:NTSC 2766:Y′UV 2701:sRGB 2615:iCAM 2469:Gray 2454:Pink 2434:Blue 2429:Cyan 2119:Gray 2099:Pink 2079:Blue 1866:CMYK 1436:PMID 1399:PMID 1374:link 1356:PMID 1290:ISBN 1269:2020 1237:ISBN 1210:ISBN 1180:ISBN 1150:ISBN 1120:PMID 1083:2010 1064:PMID 976:PMID 891:2023 856:ISBN 833:2007 462:and 446:and 318:Any 297:=1. 268:The 230:The 206:The 113:any 111:cite 73:are 3047:RAL 3032:NCS 3012:HKS 3002:DIC 2962:TSL 2957:YJK 2952:HWB 2947:RYB 2917:HCL 2902:LMS 2854:MAC 2798:YIQ 2779:PAL 2774:YUV 2688:RGB 2635:CIE 2602:CAM 2409:Red 2195:Hue 2089:Red 1854:RGB 1428:doi 1391:doi 1348:doi 1336:302 1110:doi 1056:doi 1011:doi 960:doi 948:221 917:doi 692:In 628:FTL 595:by 530:sic 460:RGB 444:RGB 253:or 124:by 3100:: 3064:ja 2942:RG 1442:. 1434:. 1424:32 1422:. 1405:. 1397:. 1387:24 1385:. 1370:}} 1366:{{ 1346:. 1334:. 1312:. 1260:. 1194:^ 1164:^ 1132:^ 1118:. 1106:46 1104:. 1100:. 1062:. 1054:. 1044:18 1042:. 1038:. 1023:^ 1007:78 1005:. 982:. 974:. 966:. 958:. 946:. 923:. 913:18 911:. 899:^ 882:. 878:. 824:. 779:, 775:, 546:. 374:A 358:. 315:. 249:A 218:.) 3086:. 2568:e 2561:t 2554:v 1518:e 1511:t 1504:v 1450:. 1430:: 1413:. 1393:: 1376:) 1362:. 1350:: 1342:: 1298:. 1271:. 1245:. 1218:. 1188:. 1158:. 1126:. 1112:: 1085:. 1058:: 1050:: 1017:. 1013:: 990:. 962:: 954:: 931:. 919:: 893:. 864:. 835:. 614:. 602:" 560:" 295:y 293:+ 291:x 287:y 151:) 145:( 140:) 136:( 132:. 118:. 36:. 20:)

Index

Impossible colour
Reddish, Greater Manchester, UK


sensation
sensitivity curves
cone cells
colors
visual functioning
color theories

cite
sources
improve this section
adding citations to reliable sources
removed
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Opponent process
cone cells

CIE 1931
chromaticity
limitations of RGB computer displays

ProPhoto RGB color space
gamut
colorants
color space
cone cell
spectral sensitivity

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