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The use of color theory research
The use of color theory research
Law of color theory
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Introduction Up to the seventeenth century, most theories attributed color to some sort of modification of light that was thought to occur when light interacted with matter. Light, in its purest form (such as sunlight) was thought to be colorless. However, progress in understanding color was made by Isaac Newton when in 1666 he was able to show that normal white light already contained all the colors of the spectrum, which could be separated using a prism. He also concluded from his experiments that objects have color because they selectively reflect certain colors of the spectrum while absorbing light of other colors. Light is the small part of the electromagnetic spectrum that can affect the human sense of sight. The visible part of the spectrum (for us) ranges from 400 nm (blue) to 700 nm (red). Each wavelength value within the visible band corresponds to a distinct colour. Parameters of light that are of interest to us: Wavelength - the length of one light-wave cycle Frequency - the number of wavelengths per second Three attributes are used to specify a color: hue, saturation and brightness. These describe only the perception of light, not its physical properties. 1. Hue - a feature of monochromatic light that varies with wavelength and used to denote the various regions of the spectrum (in other words, the basic color from the spectrum). 2. Saturation - how much a color differs from white (ie vivid pure color versus pastel color) 3. Brightness - the perceived intensity of light Spectral Power Distribution Monochromatic light is light that has only one wavelength, and thus cannot be further divided into different components using a prism. But most light sources are not monochromatic ... ... middle of paper ... ...d (B) of wavelength 435.8nm. This means that given an RGB color (C) = L1(R) + L2(G) + L3 (B), its coordinates in the XYZ system are: X = 2.7689*L1 + 0.38159*L2 + 18.801*L3 Y = L1 + L2 + L3 Z = 0 + 0.012307*L2 + 93.066*L3 This particular transformation was chosen so that the XYZ system would have several convenient properties. One is that there are no negative tristimulus values, which reduces the possibility of error. Another is that the color triangle enclose the spectrum locus as closely as possible. Works Consulted Williamson, Samuel J. and Herman Z. Cummins. Light and Color in Nature and Art. 1983. John Wiley and Sons. Overheim, R. Daniel and David L. Wagner. Light and Color. 1982. John Wiley and Sons. Bouma, Dr. P. J. Physical Aspects of Colour. 1971. MacMillan. Wright, W. D. The Measurement of Colour. 1969. Adam Hilger.
A spectrum is a group of light wavelengths that are ordered in relation to their wavelength length. The electromagnetic spectrum consists radio waves, microwaves, infrared, visible, ultraviolet, X-rays and gamma rays. (1)Specifically, this lab looks at the visible light part of the spectrum because one of the colors in the visible light spectrum is shine through the sample. The visible light spectrum consists of colors of red, orange, yellow, green, blue, indigo, and violet. The color chosen to be shine through the sample is affected by the color of sample when mixed with the indicator Ammonium Vanadomolybdate (AMV). The color on the color wheel that is opposite of the solution’s color is the color that is shined through the
...nd violet wavelengths are the shortest, and violet is the least visible to the human eye. These wavelengths are scattered throughout the day and caused by a redirection of the light-waves direction due to gas molecules in the atmosphere (Mc Knight, p. 84). When the sun is setting towards the end of the day there are few blue wavelengths left and we see orange and red which are dominant and the longest wavelengths of visible light to the human eye. At the bottom of the photo (closest to the setting sun) red and orange are the dominant visible colors with the occasional blue and almost violet. If our eyes could not see orange and red our sunsets would be a dark blue or black.
University of Virginia, VA: National Art Education Association, 1992. Print. Gilbert, Jonathan P and Rachel Mills. Michelin Green Guide California.7 ed.
Newton, Henry, and William Winsor. "Spotlight on Colour: Flake White." Winsor&Newton. N.p., 2011. Web. 30 Apr. 2014.
The Art Bulletin, Vol. 57, No. 2 (Jun., 1975), pp. 176-185. (College Art Association), accessed November 17, 2010. http://www.jstor.org/stable/3049368.
prospective, and the basics of light, shadow, and space, and the use of color(Moir 21) .
Color is a product of many different things. We physically see color by the light hitting the retina and being absorbed by the rods and cones. Colors are distinguished by sorting them into categories. These could include tint, shade, tone, chroma, value, or hue. It could also be determined by whether a color is primary, secondary, intermediate, or complementary. The illusion of different colors can be created by the colors around a color or placing bits of color very close together as in a television. Afterimages create the opposite of colors. All color is a product of light. Without light, we would only be able to see in black and white (The World Book Encyclopedia p 818, 819, 822, 823).
Williams, B. 1999. A History of Light and Lighting. [online] Available at: http://www.mts.net/~william5/history/hol.htm [Accessed: 5 Jan 2014].
Light is both part particle and part wave. Light is “the electromagnetic radiation that may be perceived by the human eye”. It consists of photons, which are massless bundles of concentrated electromagnetic energy. Light’s lower frequency is red, and the higher frequency is blue. Like sound, light has frequencies humans can’t detect. Ultraviolet light is at a frequency higher than violet, and infrared is at the frequency lower than the red of visible light. We get UV (ultraviolet) rays from the sun, and infrared is used in night vision to see better.
One of the most important (and most interesting) conclusions of the biology of vision is that color is not technically generated by physical reality. Color appears to be a mental construct, and therefore, everyone views color differently. The rationale one is often given for the color of particular objects is the following: light consists of all colors. When light strikes an object in absorbs most of the wavelengths of light, but those that it reflects correspond to the color one sees.
...ace Theory, Forster's Counter, and the Metaphysics of Color." The Eighteenth Century 53.4 (2012): 393-412. Project MUSE. Web. 15 Dec. 2013. .
There is an abundance of ways light and color can play tricks with how your body thinks. Color has an impact on everything. When you walk into a restaurant and instantly become hungry is one way that color has an influence. When you feel antsy in one room and calm in the other is another way that color has an effect, this is all because of the atmosphere of that room, which is altered by color.
Light is what lets you experience colour. The pigment of the retina in your eyes is sensitive to different lengths of light waves which allows you to see different colours. The wavelengths of light that humans can see are called the visible colour spectrum.
There has always been an understood correlation between light and color. Color cannot be seen when there is no light,but if there is too much light the world will only appear white. Today there is an understanding of what it is that makes color and how light is the key to it. It is understood that an object appears to have a color only when its apparent color is reflected back. There is also a known correlation between the wavelengths of light and their apparent color. Along with the physics of color there is a greater understanding of the symbolic nature of color and how it affects the psychology of observers. Psychologists, artists, and therapists of all sorts have a greater understanding of the human perception of color because of the great thinkers of the past. To men who contributed to this greater understanding of color were Isaac Newton and Johann Wolfgang von Goethe.
Klosowski, John E. "The Color Purple and Its True Color." Houston Cronicle. December 14, 1995 : 42-44.