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Journal articles on the topic 'Light and colors'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Hung, Chih-Ching, Yan-Huei Li, and Ping-Han Yang. "Application of the Mechanism Design to Develop the RGB LEDs Color Mixing." International Journal of Photoenergy 2015 (2015): 1–14. http://dx.doi.org/10.1155/2015/876364.

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The big advantage of LED is the flexible spectral design to make white light using different color mixing schemes. Recently, the color mixing of RGB LEDs is mostly done by sealing all three chips at single package and regulated the mix ratio of these three colors to produce the color of light. And, by changing the LEDs array alignment, RGB chips can achieve overlapping colors of light and create the fun of changing colors in light mixing. Therefore, the purpose of this study is to propose an innovative technique of light mixing. By applying the mechanism design, a RGB light mixing mechanism is

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Zou, Qingqing, Weiwei Li, Chaoshuo Zhang, Jianghui Bao, Huafei Lyu, and Ming Duan. "Shy and Bold Fish Have the Same Preference for Light Color Selection." Animals 14, no. 11 (2024): 1583. http://dx.doi.org/10.3390/ani14111583.

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Personality, which matters for animal welfare, demonstrates behavioral differences. Light is one of the most important factors in aquaculture. However, how fish personality affects light color selection is unclear. In this study, we tested the personality of yellow catfish Pelteobagrus fulvidraco juveniles and then quantified the selective behaviors of different personalities under six light colors: violet (410–420 nm), yellow (580–590 nm), green (550–560 nm), red (620–630 nm), blue (470–480 nm), and white. The results showed that juveniles preferred the yellow and green light over the other c

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Makhov, Alexander E. "SPLIT LIGHT: COLORING OF MEDIEVAL DESCRIPTIONS OF PARADISE." Folklore: structure, typology, semiotics 5, no. 3 (2022): 152–59. http://dx.doi.org/10.28995/2658-5294-2022-5-3-152-159.

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The most important attribute of paradise in most of its medieval descriptions is light, which is usually characterized in superlatives: paradise is filled with such a bright radiance that any differentiation of colors is apparently impossible here. However, some texts suggest a certain, albeit modest, color diversity of paradise: they mention the colors of plants present in paradise, the colors of rivers flowing in it, etc. It seems to us that such a “splitting” of undifferentiated light that dominates paradise space does two functions. First, it symbolically expresses the difference in virtue

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Liou, Jeih-Jang. "A Novel Color Recognition Model for Improvement on Color Differences in Products via Grey Relational Grade." Axioms 10, no. 4 (2021): 266. http://dx.doi.org/10.3390/axioms10040266.

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ED light, a green energy-saving light source, can cause color cast. For this reason, LED light is seldom favored by designers. The purpose of the paper is to provide shoppers who are observing product colors in an LED-lighted setting with an innovative color identification model. Based on designers’ product color comparison, the paper employs high-reliability mechanic visual perception in combination with grey relational grade. Grey relational grade is applied to eliminate electrical fault pertaining to mechanic visual perception, whereby appropriate LED parameters and color cast inclination c

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Serrano, Arman. "Effects of Different Colors and Intensity of Light on the Growth of Bell Pepper (Capsicum annuum)." Studies in Technology and Education 2, no. 1 (2023): 10–24. http://dx.doi.org/10.55687/ste.v2i1.44.

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This study was conducted to determine the agronomic characteristics on the effects of different colors and intensity of light on the growth of Bell Pepper (Capsicum annuum). This study used the experimental method of research using a Complete Randomized Design (CRD). There are two factors in this experiment; Factor A different colors (red, blue, and green) and Factor B intensity of light (5W, 10W, and 15W). Agronomical characteristics were measured and statistically treated using Factorial Analysis of Variance to determine if different colors, intensity and interaction of light have significan

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Hung, Chih Ching, Chi Chang Hsieh, Yan Huei Li, and Chyun Chau Lin. "LED Color Mixing Mechanism Design." Applied Mechanics and Materials 284-287 (January 2013): 2894–98. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.2894.

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LED is the solid-state light source of the 21st century that ranges from white light to any color in the entire spectrum. LED lights create static or dynamic illumination in indoor lighting applications. Modern indoor lighting fixtures not only provide illumination, but also are the primary elements that create the atmosphere. The use of gradual mixing of lights or different colors not only makes lights fit more people’s physical and psychological needs, but also improve one’s aesthetic perspectives. However, the LED color mixing technique based on RGB colors requires the package of the RGB ch

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Akhmad Rizqi Aprilianto, Sri Mulyanto H, Siti Fatimah, Henna Nurdiansari, and Akhmad Kasan Gupron. "Rancang Bangun Kapal Tanpa Awak Guna Mendeteksi Navigation Lamp Untuk Menghindari Tubrukan." Ocean Engineering : Jurnal Ilmu Teknik dan Teknologi Maritim 3, no. 2 (2024): 63–79. https://doi.org/10.58192/ocean.v3i2.2215.

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The Unmanned ships have become a primary focus in maritime technology development to enhance efficiency and navigational safety in waters. In this research, a unmanned ship utilizing ESP32CAM as its core system is designed to detect navigation lights of other vessels and avoid potential collisions. The initial response of the ESP32CAM camera reads the colors of lights approaching the unmanned ship within a distance of less than 100cm. The ESP32CAM reads and identifies colors through image processing. When the ESP32CAM detects green and red lights, it commands the buzzer to sound. The color det

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Ignatov, I., and T. P. Popova. "Graphical modeling of additive color mixing. Analyses of electromagnetic effects as colors of the vision analyzer." Medicni perspektivi 29, no. 2 (2024): 11–17. http://dx.doi.org/10.26641/2307-0404.2024.2.307463.

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The human visual analyzer is a high form of evolution. Some jellyfish can distinguish light and dark objects with sensitive cells. Squids, octopuses, and nautiluses from Cephalopods family have eyes with which they can see objects. Visual information is processed in the brain. In fishes, the visual analyzer evolved. Fishes living below 100 m depth inhabit a world with blue light. The authors consider the evolution of vision in these fishes due to the lowest absorption of blue and violet colors of electromagnetic waves from the optical spectrum. Subsequently, on land, in humans vision evolved t

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Ignatov, I., and T.P. Popova. "Graphical modeling of additive color mixing. Analyses of electromagnetic effects as colors of the vision analyzer." Medicni perspektivi 29, no. 2 (2024): 11–17. https://doi.org/10.26641/2307-0404.2024.2.307463.

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The human visual analyzer is a high form of evolution. Some jellyfish can distinguish light and dark objects with sensitive cells. Squids, octopuses, and nautiluses from Cephalopods family have eyes with which they can see objects. Visual information is processed in the brain. In fishes, the visual analyzer evolved. Fishes living below 100 m depth inhabit a world with blue light. The authors consider the evolution of vision in these fishes due to the lowest absorption of blue and violet colors of electromagnetic waves from the optical spectrum. Subsequently, on land, in humans vision evolved t

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Upadhayay, Ranjana. "A COMPARATIVE STUDY OF COLOUR PREFERENCES TOWARDS CLOTHING AMONG YOUNG GIRLS AND BOYS." International Journal of Research -GRANTHAALAYAH 2, no. 3SE (2014): 1–5. http://dx.doi.org/10.29121/granthaalayah.v2.i3se.2014.3532.

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Colour, is the visual perceptual property corresponding in human beings to the names called red, green, blue, and so on and so forth. Colours are derived from the spectrum of light, interacting in the eye with the spectral sensitivities of the light receptors. Colour categories and physical specifications are related to objects or materials based on their physical properties such as light absorption, reflection, or emission.The meanings of colors vary according to cultures and environments. Each color has many aspects which may be expressed as the language of color by understanding few concept

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Dr., Ranjana Upadhayay. "A COMPARATIVE STUDY OF COLOUR PREFERENCES TOWARDS CLOTHING AMONG YOUNG GIRLS AND BOYS." International Journal of Research - GRANTHAALAYAH Composition of Colours, December,2014 (2017): 1–5. https://doi.org/10.5281/zenodo.887553.

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Colour, is the visual perceptual property corresponding in human beings to the names called red, green, blue, and so on and so forth. Colours are derived from the spectrum of light, interacting in the eye with the spectral sensitivities of the light receptors. Colour categories and physical specifications are related to objects or materials based on their physical properties such as light absorption, reflection, or emission. The meanings of colors vary according to cultures and environments. Each color has many aspects which may be expressed as the language of color by understanding few concep

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Janah, Anisa Furtakhul, Upik Nurbaiti, and Fianti Fianti. "Pengaruh Warna Dan Bentuk Lampu Terhadap Tingkat Kenyamanan Manusia Di Ruang Tidur." EnviroScienteae 16, no. 1 (2020): 7. http://dx.doi.org/10.20527/es.v16i1.8994.

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The purpose of this study was to study the effect of various light colors and shape on light intensity and visual contentment levels. This research was experimental research consisting of two variables consisting of light colors with four colors: red, yellow, green, and blue, and three different lamp shapes: round, spiral, and essential. The lamp used for color variations had a power of 2.5 watts, while the lamp used for variations in shape had a power of 5 watts. The parameters studied in this study were the lighting and the light intensity produced. The data analysis technique used in this s

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Gomez-Sarabia, C. M., J. T. Rodriguez-Doñate, and R. Rodriguez-Doñate. "Light Colors using polarization." Optica Pura y Aplicada 48, no. 2 (2015): 159–61. http://dx.doi.org/10.7149/opa.48.2.159.

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Jackson, Frank. "Learning from What Color Experiences Are Good For." Harvard Review of Philosophy 27 (2020): 49–58. http://dx.doi.org/10.5840/harvardreview202072529.

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Color is an incredibly controversial topic. Here is a sample of views taken seriously: colors are dispositions to look coloured; colors are physical properties of surfaces or of light; colors are properties of certain mental states, which get projected onto the surfaces of objects or onto reflected or transmitted light; colors are an illusion; colors are sui generis. One hopes to break the impasse by finding a compelling starting point—one drawing on obvious points that are common ground—which naturally evolves into the theory of color one likes. I start with remarks about the utility of havin

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Sharma, Indu, and Anjuli Bisaria. "PSYCHOLOGICAL EFFECTS OF COLORS AND COLOR THERAPY." International Journal of Research -GRANTHAALAYAH 2, no. 3SE (2014): 1–3. http://dx.doi.org/10.29121/granthaalayah.v2.i3se.2014.3593.

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Everything in the universe has color. Color has a natural connection with human life. From birth to death, human life is visible only between colors. Every composition of nature, whether it is the sun, the earth, the sky or the tree has some color. It is visible to us only because of the color of the objects in the ground. The medium for experiencing color is light, which is reflected from the object and reaches our axon. Therefore, due to change of light or due to less or more amount of light, objects of the same color appear differently. The colors are seen in bright light and do not appear

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Nursayyidah, Ade, and Yully Ambarsih Ekawardhani. "Color preferences in children’s drawings in Taman Kanak-kanak Alquran Ash Shofa." Proceeding of International Conference on Business, Economics, Social Sciences, and Humanities 6 (March 31, 2023): 401–8. http://dx.doi.org/10.34010/icobest.v4i.394.

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This study aims to see the color preferences chosen by the students in Taman Kanak-kanak Alquran (which will later be called TKQ) Ash Shofa Bandung while drawing. The research uses a descriptive method in the form of document analysis, through observation of data sources. The documents studied are children’s drawings in TKQ Ash Shofa and related literature. Color is included as a visual element in the drawing one of which is children’s drawing. In this case, color plays a role in conveying the children’s feelings, such as the use of black color when they’re sad, or yellow color when they’re ha

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Salsabila, Afiyah, Nurul Esa Rahmah, Eisha Jansyah Yusuf, Resi Febriyanti, and Ahmad Suryadi. "Laser Pointer Light as an Alternative Monochromatic Light Source in Diffraction Grating." Jurnal Multidisiplin Indonesia 1, no. 4 (2023): 176–91. https://doi.org/10.62007/joumi.v1i4.170.

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Previous research only used one type of color, namely red. Then, researchers developed it by using three types of colors. In this research, we want to analyze the wavelengths produced by laser pointers of different colors, identify the distance between the grid and the screen, identify the distance between the central bright spot, and analyze the relationship between the lattice constant and the distance from the center of the light to the next light. The research method used was direct observation in the optics laboratory. The laser pointer was used as a monochromatic light source to produce

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Dev, Sandhya. "SOCIAL PERSPECTIVE OF COLORS." International Journal of Research -GRANTHAALAYAH 2, no. 3SE (2014): 1–2. http://dx.doi.org/10.29121/granthaalayah.v2.i3se.2014.3590.

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Color is a symbol of joy and enthusiasm. Colors have a special effect on the human brain. Colors produce attractiveness and vividness in any object. The source of color is light. Identification of different colors is possible because objects reflect light and reflect it. Light enters the eyes. Acts on our vision sensation. Due to this, the sensation of light is produced and the brain feels color.Generally, objects reflect some part of the light and some part absorb it. Eg 0 if the objects are green. So she charms all colors except Hare. The object that appears white reflects all colors. Black

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Eskak, Edi, Irfaina Rohana Salma, and Hadi Sumarto. "Peningkatan kecerahan dan daya rekat warna pada produk gerabah batik." PRODUCTUM Jurnal Desain Produk (Pengetahuan dan Perancangan Produk) 3, no. 1 (2017): 1. http://dx.doi.org/10.24821/productum.v3i1.1733.

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Application of batik techniques for decoration making on pottery products results in unique decorative motifs. Decorative motifs are formed by the process of color blocking using a substance called ‘malam’ (batik wax) on the surface of pottery, but the resulted colors are less bright. The adhesiveness of colors on the surface of pottery are also less strong. The purpose of this study is to optimize materials and batik pottery production process to improve the brightness and adhesion of the colors. Methods used are: (1) selection of pottery, (2) designing of motifs, (3) penyantingan/batik makin

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Umar, Idrus. "Rangsangan Warna Cahaya terhadap Prosentase Karkas Ayam Kampung Super." Jambura Journal of Animal Science 4, no. 1 (2021): 73–78. http://dx.doi.org/10.35900/jjas.v4i1.5407.

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The purpose of the study was to determine the effect of giving different colors of light on carcass percentage and carcass weight in Kampung Super chickens. The research design used was a completely randomized design (CRD). A total of 80 Kampung Super chickens were used in this study. The research treatments were P1 (white light color), P2 (yellow light color), P3 (green light color), P4 (red light color), P5 (blue light color). The results of the study of the highest carcass presentation were found in the treatment that was given red light with an average value of 62.455%. The highest carcass

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Wei, Xian Fu, Shao Hong Gao, Bei Qing Huang, and Wan Zhang. "Research on the Imaging Mechanism of Additive Color of Fluorescent Ink-Jet Ink." Applied Mechanics and Materials 262 (December 2012): 22–26. http://dx.doi.org/10.4028/www.scientific.net/amm.262.22.

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The formation of color images are generally divided into two methods: additive color imaging based on color light mixture and subtractive color imaging based on colorant mixture. Additive color imaging refers to the color image mixed by a certain percentage of the three primary color lights: red (R), green (G) and blue (B), such as LED display, cell phone screens, digital cameras and others. Subtractive color imaging refers to the color image generated by light mixture reflected by each colorant, due to some light of different wavelength in the white light separately absorbed by certain colora

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Clarke, Ted. "Chromatic Aberration in Digital Photomicrographs from Microscopes Requiring Compensating Eyepieces." Microscopy Today 12, no. 4 (2004): 34–37. http://dx.doi.org/10.1017/s155192950005481x.

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Chromatic aberrations are defects in an imaging system caused by the fact that different wavelengths or colors of light are refracted by different amounts. There are two types of chromatic aberration: longitudinal and lateral. Longitudinal Chromatic Aberration arises when a lens fails to focus various colors sharply in the same plane. If white light is used, the resulting image will be unsharp due to the different focal points of its component colors. Some colors will be in focus (and therefore sharp) and other colors will be out of focus. Lateral Chromatic Aberration results in a lateral shif

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Remawa, Anak Agung Gede Rai, I. Kadek Dwi Noorwatha, I. Made Pande Artadi, Toddy Hendrawan Yupardhi, and Putu Ari Darmastuti. "WARNABALI: BALINESE COLOR INTENSITY DIVERSIFICATION FOR DEVELOPMENT OF BALI MODERN INTERIOR AND ARCHITECTURE COATING IN ADDITIVE COLOR ONLINE BASED EXPERIMENT." Journal of Aesthetics, Design, and Art Management 2, no. 1 (2022): 52–62. http://dx.doi.org/10.58982/jadam.v2i1.186.

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Purpose: This study aims to conduct experiments on enriching the intensity of traditional Balinese colors that are relevant to the application of color in modern interiors and architecture. Research methods:The research method uses online-based experiments by mixing Balinese colors with light and dark characters in a ratio of 66.7%: 33.3%. Mixing is done by crossing process and the results of the cross process are arranged into a Balinese color palette based on Additive Colors. Findings:The color cross method with a ratio of 66.7% light to 33.3% dark produces bali color variants wi

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Stoddard, Mary Caswell, Harold N. Eyster, Benedict G. Hogan, Dylan H. Morris, Edward R. Soucy, and David W. Inouye. "Wild hummingbirds discriminate nonspectral colors." Proceedings of the National Academy of Sciences 117, no. 26 (2020): 15112–22. http://dx.doi.org/10.1073/pnas.1919377117.

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Many animals have the potential to discriminate nonspectral colors. For humans, purple is the clearest example of a nonspectral color. It is perceived when two color cone types in the retina (blue and red) with nonadjacent spectral sensitivity curves are predominantly stimulated. Purple is considered nonspectral because no monochromatic light (such as from a rainbow) can evoke this simultaneous stimulation. Except in primates and bees, few behavioral experiments have directly examined nonspectral color discrimination, and little is known about nonspectral color perception in animals with more

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Miyazaki, Daisuke, and Kazuya Uegomori. "Example-Based Multispectral Photometric Stereo for Multi-Colored Surfaces." Journal of Imaging 8, no. 4 (2022): 107. http://dx.doi.org/10.3390/jimaging8040107.

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A photometric stereo needs three images taken under three different light directions lit one by one, while a color photometric stereo needs only one image taken under three different lights lit at the same time with different light directions and different colors. As a result, a color photometric stereo can obtain the surface normal of a dynamically moving object from a single image. However, the conventional color photometric stereo cannot estimate a multicolored object due to the colored illumination. This paper uses an example-based photometric stereo to solve the problem of the color photo

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Aston, Stacey, Kristina Denisova, Anya Hurlbert, et al. "Exploring the Determinants of Color Perception Using #Thedress and Its Variants: The Role of Spatio-Chromatic Context, Chromatic Illumination, and Material–Light Interaction." Perception 49, no. 11 (2020): 1235–51. http://dx.doi.org/10.1177/0301006620963808.

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The colors that people see depend not only on the surface properties of objects but also on how these properties interact with light as well as on how light reflected from objects interacts with an individual’s visual system. Because individual visual systems vary, the same visual stimulus may elicit different perceptions from different individuals. #thedress phenomenon drove home this point: different individuals viewed the same image and reported it to be widely different colors: blue and black versus white and gold. This phenomenon inspired a collection of demonstrations presented at the Vi

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Sedgewick, Jerry. "Color Matching to Ink Jet Printers from a Computer Screen, Part 1." Microscopy Today 12, no. 6 (2004): 30–33. http://dx.doi.org/10.1017/s1551929500065949.

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The ability to print what is seen on a computer screen so that it matches a printer (color matching) confounds even the most experienced. That's because computer monitors, even from the same manufacturer, cannot be made to display colors identically. Also, printers from different manufacturers contain several “libraries” of replacement colors in order to replace pixel values in an image from light (red, green and blue: RGB) to the primary colors for pigments (cyan, magenta, yellow and black: CMYK). Cameras use the primary colors for light and that is the way the digital image is stored and dis

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Safiye, Nur Erkara, Turel Tugce, and Kurucay Ahmet. "Investigation of the Effect of Building Shell Colors on Energy Performance in Different Climate Zones." ZeroBuild Journal (ZBJ) 02, no. 02 (2024): 129–38. https://doi.org/10.5281/zenodo.13117661.

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This study investigates the effects of building exterior wall colors on heating and cooling energy consumption. Analyses conducted in four different climate zones of Turkey (Erzurum, Antalya, Konya, Konya and Balıkesir) reveal that there are significant differences in energy efficiency between black, white, yellow and dark blue wall colors. In the study, the energy performance of a sample building and the effect of building envelope color on solar radiation were analytically calculated. Black shell color is good for saving energy for heating, while white shell color is good for saving energy f

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Sofia Shishmanova, Prof Dr, and Aneta Rinaldi. "RGB COLOR WHEEL INTENDED TO CREATE COLOR HARMONY COMPOSITIONS IN MODERN ART AND DESIGN." EPH - International Journal of Science And Engineering 4, no. 4 (2018): 45–57. http://dx.doi.org/10.53555/eijse.v4i4.163.

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The existing RYB color wheel widely used to create harmonic color compositions is not applicable in modern digital art and design. The reason is that colors formed by light, “additive colors”, and those formed by pigments, “subtractive colors” did in fact operate by different rules, and had different primary and complementary colors. So new color wheel is proposed - “RGB color wheel” suitable .to work with colors in digital environment.  The RGB color wheel is based on the primary colors R, G, B, defined by sRGB color space, create by additive mixing 3 secondary and 6 tertiary harmonic c

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Hong, Seokhyeon, Young Jin Lee, Kihwan Moon, Youngsoo Kim, Eunso Shin, and Soon-Hong Kwon. "Far-Field Analysis on Reflecting Colors of Dielectric Nanosphere Metasurface." Journal of Nanomaterials 2019 (June 16, 2019): 1–8. http://dx.doi.org/10.1155/2019/6532967.

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Photonic resonances in nanostructures have been exploited in reflective or transmission color filters, which can provide vivid colors. Metallic nanostructures have been widely studied to demonstrate a variety of color filters based on strong light interaction due to plasmonic resonances. However, because of the severe absorption loss of metal in visible light, dielectric nanoparticles having Mie resonances are a popular study focus in recent years to achieve vivid colors. In contrast to the behaviors of point-like electric dipole in metallic nanoparticle, the interplay of the electric and magn

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Cho, Jun-Dong, and Yong Lee. "ColorPoetry: Multi-Sensory Experience of Color with Poetry in Visual Arts Appreciation of Persons with Visual Impairment." Electronics 10, no. 9 (2021): 1064. http://dx.doi.org/10.3390/electronics10091064.

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Visually impaired visitors experience many limitations when visiting museum exhibits, such as a lack of cognitive and sensory access to exhibits or replicas. Contemporary art is evolving in the direction of appreciation beyond simply looking at works, and the development of various sensory technologies has had a great influence on culture and art. Thus, opportunities for people with visual impairments to appreciate visual artworks through various senses such as hearing, touch, and smell are expanding. However, it is uncommon to provide a multi-sensory interactive interface for color recognitio

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Sunny, Sharma. "Effect of Color in Human Life." International Journal of Research - GRANTHAALAYAH Composition of Colours, December,2014 (2017): 1–2. https://doi.org/10.5281/zenodo.888207.

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Most people are unaware of he propend effect color has on their behavior” Take a minute and imagine the world around you without colors, how boring and unexciting life would be colors play a vital role in our daily lives and if has been proven that our actives and response and influenced by them. Every color has a unique effect on individuals and stimulates various responses e.g. a research has proven that blue color enhances creativity whereas the colors red helps to be focused and has appositive effect on memory. Dark green color has a motivational effect on males. The color is yellow helps

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Musdarina, Musdarina, Hernawati Hernawati, and Fitriyanti Fitriyanti. "STUDI PERBANDINGAN PENGARUH BERBAGAI WARNA LAMPU DAN BUNYI TERHADAP PERTUMBUHAN SAYURAN SAWI HIJAU (BRASSICA RAPA VAR. PARACHINENSIS L)." JFT : Jurnal Fisika dan Terapannya 6, no. 1 (2019): 16. http://dx.doi.org/10.24252/jft.v6i1.10183.

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Research has been conducted which aims to determine the effect of various colors of LED light and sound effects with frequency of 280Hz-16KHz. This research was conducted by seeding mustard greens for 2 weeks then moving mustard greens to polybags by giving two treatments. First treatment of mustard greens illuminated by LED lights with the color red, yellow, green and the fourth polybag left without the addition of LED light. The second treatment is every 1 polybag of green mustard illuminated by LED lights with red, yellow, green lights at night for 4 hours then exposed to sound in the morni

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Kretkowski, M., Ryszard Jabłoński, and Y. Shimodaira. "Color Calibration Method Based on Spectrally Reproduced Colors and its Application to XYZ-Type Digital Camera." Advanced Materials Research 222 (April 2011): 98–101. http://dx.doi.org/10.4028/www.scientific.net/amr.222.98.

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This paper presents the development of a color calibration method based on spectrally reproduced colors produced by multi-primary color narrow-band LED’s. The additive mixture of the primary colors can spectrally reproduce an object color. This approach has been used in our work to overcome the insufficient calibration results obtained by commonly used color targets such as the Macbeth Chart. The method has been tested using a developed prototype of digitally controlled light source calibrated to simulate object color under D65 Daylight standard illumination. The method allows for obtaining of

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Fan, Qin Guo. "Biological Colors." Advanced Materials Research 441 (January 2012): 779. http://dx.doi.org/10.4028/www.scientific.net/amr.441.779.

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Biological systems have their unique color generation mechanisms based on the selective reflection of light using colorants, scattering, interference and diffraction principles. Plants and animals can use either biochromes or schemochromes effectively thus presenting to us a beautiful colored world. Biochromes like chlorophylls and carotenoids are colorants synthesized by biological systems via a biochemical process and can reflect components of white light selectively, whereas schemochromes rely on the colorless structural characteristics of a biological component to generate a specific range

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Cramer, Werner Rudolf. "Color fundamentals." Physical Sciences Reviews 6, no. 5 (2021): 27–80. http://dx.doi.org/10.1515/psr-2020-0164.

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Abstract Colors are only created in the human brain. During this process, light rays from the environment reach the retina of the eye. There they trigger an optical stimulus, which is transmitted to the brain. And the brain translates this stimulus into colors. The perception of color is influenced by multiple factors, which is why it is highly subjective. Originally, the light rays come from the sun. They are described by the color spectrum, which comprises rays visible to us from 400 to 700 nm. These light rays can be influenced by different pigments that manipulate the light rays. This mani

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Abenes, M. L. P., and Z. R. Khan. "Attraction of Rice Leafhoppers and Planthoppers to Different Light Colors." International Rice Research Newsletter 15, no. 2 (1990): 32–33. https://doi.org/10.5281/zenodo.7179237.

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This article 'Attraction of Rice Leafhoppers and Planthoppers to Different Light Colors' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping systems. This publication will report what scientists are doing to increase the production of rice in as much as this crop feeds the most densely populated and land scarce nations in the world.

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Sabyasachi, Rana. "IMPACT OF COLOR ON OUR." International Journal of Research -GRANTHAALAYAH 2, no. 3SE (2014): 1. http://dx.doi.org/10.29121/granthaalayah.v2.i3se.2014.3549.

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There are many colors in our world. Think of how bland and unexciting it would be without color. Colors light up our surroundings, and inspire us to be creative. Life would have been terribly drab if colors did not exist. I cannot imagine a world where there was a total absence of color. It is enough for us to look at the dawn after the darkness of night to know the difference. Landscapes and seascapes take life from the different shades of greens and blues, the colors of the birds' feathers, the different colors of fish, and the multicolored flowers.

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HESHAM, M. H., A. H. EL SHEREEN, and S. N. ENAS. "Impact of different light colors in behavior, welfare parameters and growth performance of Fayoumi broiler chickens strain." Journal of the Hellenic Veterinary Medical Society 69, no. 2 (2018): 951. http://dx.doi.org/10.12681/jhvms.18017.

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Light is considered one of the most managerial factors affecting poultry well-being. Therefore, the current study was conducted to investigate the effects of different light colors in behaviour, welfare and growth performance of Fayoumi chickens. A total of 300 one-day old chicks of Fayoumi broiler breed were weighed and randomly divided into 4 environmentally controlled chambers with different artificial light color (yellow, red, green and blue) until the end of the experimental period (12 weeks); each was divided into five replicate brooders (15 birds for each replicate). A scanning techniqu

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Wright, Oliver, Yasmina Jraissati, and Dila Özçelik. "Cross-Modal Associations Between Color and Touch: Mapping Haptic and Tactile Terms to the Surface of the Munsell Color Solid." Multisensory Research 30, no. 7-8 (2017): 691–715. http://dx.doi.org/10.1163/22134808-00002589.

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This study investigated cross-modal associations between color and touch using a matching task. Participants matched colors drawn from the surface of the Munsell color solid to antonym pairs of haptic/tactile adjectives. For most of the term pairs assessed (soft/hard, smooth/rough, flat/uneven, slippery/not slippery, light/heavy, thin/thick and round/sharp) matching appears predominantly influenced by lightness, with the first term from each pair matched to light colors and the other to dark colors, a result in close agreement with previous research. For two terms, warm and wet, there were cle

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Stávek, Jiří. "A New Interpretation of the Physical Color Theory Based on the Descartes´ Rotation Energy of Visible, Ultraviolet and Infrared Photons." European Journal of Applied Physics 5, no. 5 (2023): 29–38. http://dx.doi.org/10.24018/ejphysics.2023.5.5.282.

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During the past four hundred years the Newtonian and Goethean schools collected many experimental observations on the formation of colors. The situation became more complicated after the experiments of Land who documented that the classical color theory (= colors correspond to exact wavelength of light) is valid completely in the dark surroundings only. We are at the crossroads to find the boundary between the physical properties of colors and the perception of those photons in the retina and the brain. Therefore, the more general physical color theory should interpret those color effects wher

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Vyas, Sadhana. "TREND OF COLORS IN LIFE." International Journal of Research -GRANTHAALAYAH 2, no. 3SE (2014): 1–2. http://dx.doi.org/10.29121/granthaalayah.v2.i3se.2014.3623.

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Many beautiful things affect the life of human beings in the universe, colors have a prominent place among them. Colors contribute uniquely in making the environment attractive. Also, fill the life of a person with happiness, enthusiasm, enthusiasm and consciousness. Being a beautiful world of colors, they have their own importance. The variety of different colors attracts the attention of any person. Colors also show the expression of a person's emotions and emotions.According to Modern Sanctuary en Cyclopedia, "Color is one of the properties of light that the eye sees and different shapes ar

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Kawakami, Daiki, Kaito Makino, Yuichi Kobayashi, Toru Kaneko, Atsushi Yamashita, and Hajime Asama. "Projector Camera System Presenting Color Information for the Color Vision Deficient." Journal of Advanced Computational Intelligence and Intelligent Informatics 20, no. 1 (2016): 26–32. http://dx.doi.org/10.20965/jaciii.2016.p0026.

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There are people who cannot distinguish between specific colors easily. This paper presents an improvement to a system for the color vision deficient. The system consists of a camera that acquires an image of an object and a projector that projects light on that object. One of the features of the system is that it handles real-life objects. When objects have colors that cannot be distinguished, the system converts the color to a distinguishable one using the projector. The improvement in the proposed system is that it produces images with patterns and blinking light to handle conventional colo

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Mannone, Maria, Giovanni Santini, Esther Adedoyin, and Carmine E. Cella. "Color and Timbre Gestures: An Approach with Bicategories and Bigroupoids." Mathematics 10, no. 4 (2022): 663. http://dx.doi.org/10.3390/math10040663.

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White light can be decomposed into different colors, and a complex sound wave can be decomposed into its partials. While the physics behind transverse and longitudinal waves is quite different and several theories have been developed to investigate the complexity of colors and timbres, we can try to model their structural similarities through the language of categories. Then, we consider color mixing and color transition in painting, comparing them with timbre superposition and timbre morphing in orchestration and computer music in light of bicategories and bigroupoids. Colors and timbres can

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Hlava, Paul F. "Causes of Color in Minerals and Gemstones." Microscopy Today 9, no. 2 (2001): 14–17. http://dx.doi.org/10.1017/s1551929500056406.

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The colors that one sees when looking at a mineral or gemstone are due to the response of that person's eye to the energies of the light, the emission spectrum of the illumination, and, most importantly, physical phenomena in the material that cause some colors to be absorbed while others are undisturbed or enhanced. It is beyond the scope of this article to do more than touch on the physiology of the eye that allows us to see colors. Likewise, we will not dwell on the emission spectra of various light sources. Rather, we will concentrate on the various ways in which materials, especially mine

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Yu, Jiali, Cheng-Hao Lee, and Chi-Wai Kan. "Graphene Oxide/Reduced Graphene Oxide Enhanced Noniridescent Structural Colors Based on Silica Photonic Spray Paints with Improved Mechanical Robustness." Nanomaterials 11, no. 4 (2021): 949. http://dx.doi.org/10.3390/nano11040949.

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In contrast to traditional pigment colors, structural colors have developed a great potential in practical applications, thanks to their unique nonfading and color tunable properties; especially amorphous photonic structures with noniridescent structural colors have attracted considerable attention and their applications have expanded to more fields. Herein, graphene oxide (GO) and reduced graphene oxide (RGO) enhanced noniridescent structural colors with excellent mechanical robustness were established by a time-saving approach named spray coating, which allows for rapid fabrication of angula

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Tang, Zitong, and Donghao Zheng. "Exploring and analyzing the causes of color in the earth." Applied and Computational Engineering 128, no. 1 (2025): 189–97. https://doi.org/10.54254/2755-2721/2025.20460.

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Color is an essential element of human visual perception, which exists in all aspects of our daily lives and plays a key role in scientific research and technological applications. Color is produced by various mechanisms, including absorption and reflection of chemical pigments, complex formation of transition metal ions, and micro- and nanostructural modulation of structural colors. This paper aims to comprehensively explore the scientific principles of color generation and its applications in different fields. The article first describes how transition metal ions exhibit colors by forming co

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Mesyats, Svetlana. "Is it possible to see darkness? Goethe and Aristotle on the role of light and darkness in vision." ΣΧΟΛΗ. Ancient Philosophy and the Classical Tradition 13, no. 2 (2019): 537–53. http://dx.doi.org/10.25205/1995-4328-2019-13-2-537-553.

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J.W. Goethe in his Farbenlehre deduced all physical colors from a simple primordial phenomenon that takes place every time light and darkness act through a semi-transparent colorless medium either on our eyes or on the opposite surfaces. This basic rule of Goethe’s color theory was criticized by his contemporary physicists, who argued that darkness could not play an active role in the origin of colors because of being a mere absence of light. The paper demonstrates that this criticism became possible only if one shares the Newtonian view on the nature of light and darkness. Goethe however held

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Sowade, Rosita, Jens Kießling, and Ingo Breunig. "One Light Source - All Colors." Optik & Photonik 8, no. 1 (2013): 46–49. http://dx.doi.org/10.1002/opph.201300004.

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Iwata, Kazuki, Hiroki Shirasawa, and Keita Hirai. "Image-Based Measurement of Structural Color using Spectral Camera." Color and Imaging Conference 2020, no. 28 (2020): 342–46. http://dx.doi.org/10.2352/issn.2169-2629.2020.28.54.

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We perceive structural colors by optical phenomena such as light interference and diffraction caused by a fine structure of the object surface. One of the characteristics of structural colors is that a wavelength distribution of light changes depending on an incident angle of a light source and a viewing angle. Generally, for color evaluation and reproduction, it is required to acquire reflection characteristics of objects. Therefore, BRDF (Bidirectional Reflectance Distribution Function) is often used as a function that represents reflection characteristics depending on incident and viewing a

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