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Topic: Additive color


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  colorindex
A color wheel for additive color shows that mixing the primaries still creates secondary colors, however they are quite different from the pigment color wheel.
Additive color is what is used for computer monitors, televisions, and is what our eyes see in nature.
Interestingly enough, the primary colors for subtractive color are the secondary colors in the additive color model; cyan, magenta and yellow.
www.humboldt.edu /~rq1/undercolor/indexnew2.html   (722 words)

  
 Food Color Facts
Color additives that are exempt from certification include pigments derived from natural sources such as vegetables, minerals or animals, and man-made counterparts of natural derivatives.
Both types of color additives are subject to rigorous standards of safety prior to their approval for use in foods.
If the color additive is approved, FDA issues regulations that may include the types of foods in which it can be used, the maximum amounts to be used and how it should be identified on food labels.
www.ific.org /publications/brochures/foodcolorbroch.cfm   (1968 words)

  
 Additive color recharge, expose, and develop electrophotographic printing - Patent 5828933
A color printing machine according to claim 1, wherein said first color of toner is developed such that a developed mass inhibits image on image development.
As additive color toners are used in the printing machine 8 it is beneficial to prevent developing blue toner on the fl toner.
For example, the principles of the present invention could be applied in a four pass printer, wherein only one color toner image is produced during each pass of the photoreceptor through the machine and wherein the composite color image is transferred and fused during the fourth pass.
www.freepatentsonline.com /5828933.html   (3733 words)

  
 Smart Computing Encyclopedia Entry - additive color
By mixing only the three primary colors of light—red, green, and blue—in different intensities, it is possible to produce the full range of colors.
You may have learned that a pixel is the smallest individual dot of color on a monitor, but that's not entirely true.
By using additive color, each pixel can be any of millions or billions of different colors.
www.smartcomputing.com /editorial/dictionary/detail.asp?guid=&searchtype=1&DicID=16279&RefType=Encyclopedia   (284 words)

  
 Sanford & A Lifetime of Color: Study Art
Primary, secondary, and intermediate colors are organized on a circular chart.
Color wheels are based on color theory, which is based on the physics of light.
Additive color refers to the mixing of colors of light.
www.sanford-artedventures.com /study/g_color_wheel.html   (228 words)

  
 Early Color Motion Picture Processes
Additive color systems use colored light passing through the image elements to reconstruct the full colors on the screen.
The screen image appears in color by means of a color wheel rotating in sync with the film, or the use of individual dye stains of the appropriate color on each frame.
To record the full color spectrum that is visible to the human eye, we need to record the three primary color components, which are red, blue, and green.
www.widescreenmuseum.com /oldcolor/additive-subtractive.htm   (1599 words)

  
 COLOR THEORY-ADDITIVE COLOR SYNTHESIS
Additive Color Synthesis is the method of creating color by mixing various proportions of two or three distinct stimulus colors of light.
The distinguishing features of additive color synthesis are that it deals with the color effects of light rather than with pigments, dyes, or filters, and that the stimuli come from separate monochromatic sources.
The most common example of additive color synthesis is the color television screen, (or RGB monitor), which is a mosaic of red, green, and blue phosphor dots; at normal viewing distances the eye does not distinguish the dots, but blends or adds their stimulus effects to obtain a composite color effect.
www.bway.net /~jscruggs/add.html   (288 words)

  
 Subtractive and Additive Color Mixing
If one take two differently colored beams of light and projects them on to a screen, the mixing of these lights occurs according to the principle of additive color mixing.
Select color mixing to see a demonstration of additive and subtractive color mixing.
Select trichromatic color mixing to see what happens when red, green and blue lights are mixed.
www.yorku.ca /eye/colormix.htm   (87 words)

  
 Color Glossary A-C
Color assimilation (also known as the Von Bezold spreading effect or Bezold-Brücke effect) is the opposite of Color Contrast: Colors take on the hue of the surrounding color, whereas color contrasts moves it into the direction of the Complementary Color.
The further the color loci of the primary colors from the origin, the greater the volume of the cuboid color gamut which is formed and thus the higher the quality of any color reproduction system which is based on it.
Hue determines the position on the color wheel or color circle, Saturation is the purity of the color, and Luminance the range of lightness to darkness of the color.
www.sapdesignguild.org /resources/glossary_color/index1.html   (3623 words)

  
 Color Systems - Subtractive & Additive Color
Subtractive color mixing means that one begins with white and ends with fl; as one adds color, the result gets darker and tends to fl.
Additive color mixing begins with fl and ends with white; as more color is added, the result is lighter and tends to white.
Although a monitor may be able to display 'true color' (16,000,000 colors), millions of these colors are outside of the spectrum available to printers.
www.worqx.com /color/color_systems.htm   (354 words)

  
 RGB World - Understanding Color
Where the blue and green spotlights overlap, the color cyan is produced; where the blue and red spotlights overlap, the color magenta is produced; where the red and green spotlights overlap the color yellow is produced.
A red apple is a good example of subtractive color; the apple really has no color; it has no light energy of its own, it merely reflects the wavelengths of white light that cause us to see red and absorbs most of the other wavelengths which evokes the sensation of red.
Subtractive color starts with an object (often a substrate such as paper or canvas) that reflects light and uses colorants (such as pigments or dyes) to subtract portions of the white light illuminating an object to produce other colors.
www.rgbworld.com /color.html   (1253 words)

  
 GRAPHICS: Color displays
Color monitors for desktop microcomputers are based on cathode ray tubes (CRTs) or back-lighted flat-screen technologies.
The terminology and memory schemes used in color displays are directly analogous to those used to describe color depth in graphics files.
In 8-bit images the 256 colors that make up the image are stored in an array called a "palette" or an "index." The color palette may also be referred to as a "color lookup table" (CLUT).
www.webstyleguide.com /graphics/displays.html   (556 words)

  
 Additive Color (Light Theory)
However, our understanding of color as artists is complicated by the fact that the physics of pure light differs in fundamental ways from the physics of pigments or other coloring matter.
"Additive" color mixtures refer to colors in light (as in the colors produced by passing white light through overlapping translucent colored "gels").
White light was first proven to contain all of the colors by the physicist Sir Isaac Newton in the 17th century.
www.asu.edu /cfa/wwwcourses/art/SOACore/additivemain.htm   (299 words)

  
 Light and Color @ The Franklin Institute
The color of anything depends on the type of light sent to our eyes; light is necessary if we are to have any perception of color at all.
Additive colors are seen in televisions, nature, and the computer screen you are looking at right now.
Color complements are on opposite ends of the color wheel; they also happen to have drastically different wavelengths.
www.fi.edu /color/color.html   (1879 words)

  
 COLOR LIGHT
If colored light is mixed together, the brightness of the colored lights are added together.
White light is formed where all three additive primary colors overlap.
Since the white mixture results from the adding of all three color light sources, the white light mixture appears even brighter yet.
home.att.net /~RTRUSCIO/COLORMX.htm   (197 words)

  
 Color
The painter's color wheel is a historical artifact that refuses to die.
The theory of colors, in particular, has suffered much, and its progress has been incalculably retarded by having been mixed up with optics generally, a science which cannot dispense with mathematics; whereas the theory of colors, in strictness, may be investigated quite independently of optics.
Color as a visual response should not be confused with the "color" of a pigment, which is the color one would see when viewing that pigment under typical lighting conditions.
www.hypertextbook.com /physics/waves/color   (2945 words)

  
 International Paper - Additive Color   (Site not responding. Last check: )
Color reproduction on the computer monitor (and on television) is achieved by combining Red, Green, and Blue light (RGB) in varying levels to produce a full color image.
The combining of red, blue and green colors is known as the "Additive Color Process", because when the colors of light are combined with one another, or added together, the result is an increase in light intensity.
It is important to remember that a color that has a very intense or bright level of saturation may not necessarily be very light in value just as a very dull color may not necessarily be very dark in tone or value.
glossary.ippaper.com /default.asp?req=knowledge/article/11   (410 words)

  
 Light and color: an introduction
Color theory is dealt with in more depth in the series on Color management.
Device color gamut and the eye's response are discussed in detail in the page on Color Management.
It is not practical to use RGB or CMY(K) to adjust brightness or color saturation because each of the three color channels would have to be changed, and changing them by the same amount to adjust brightness would usually shift the color (hue).
www.normankoren.com /light_color.html   (1831 words)

  
 Color Matters - The Amazing Science of Color - Color Systems
Next, there's the color you can't touch, such as a beam of red light and the colors produced by your computer monitor.
Colors generated by light are part of one color system.
The tangible colors which are on the surface of objects or on the printed page are another color system.
www.colormatters.com /rgb.html   (426 words)

  
 handprint : do "primary" colors exist?
All the 18th century color wheel authors resolved this issue in terms of tonal gradation, placing either pure fl or white paint at the center of the color wheel, mixtures of the primary colors around the circumference, and steps from the primary mixtures toward the center as increasing quantities of white or fl paint.
Nearly a century of research was necessary to confirm the existence of these color receptors in the retina by microscopic dissection of retinas in 1828, the isolation of the rod's photopigment (visual purple) in 1877, and detailed color mixing experiments in the late 19th and early 20th centuries.
Color matching data, repeated and varied across hundreds of different color samples and viewing situations for both normal and color deficient viewers, and archived in the color vision literature with light sensitivity and hue cancellation data, represent the ultimate sacred texts of color research.
www.handprint.com /HP/WCL/color6.html   (13989 words)

  
 Additive Color
Additive color systems use fl and white film records of the color elements which are projected through the appropriate color filters.
In some cases, the color filter is applied to the film itself.
All additive systems suffer from reduced light transmission to the screen caused by the color filter.
www.widescreenmuseum.com /oldcolor/additive.htm   (74 words)

  
 Additive/Subtractive Color - Ian-Albert.com
Subtractive color is what happens when you mix paint, print a picture, or highlight a word on a page.
Something else you may notice is that cyan, magenta, and yellow are the colors of the ink in your color printer.
Additive color is an exact inverse of subtractive color.
ian-albert.com /graphics/addsubcolor.php   (598 words)

  
 Color Space Fundamentals
Although all colors of the visible spectrum can be produced by merging red, green and blue light, monitors are capable of displaying only a limited gamut (i.e., range) of the visible spectrum.
The chart to the left plots the visible color spectrum as the large "horse shoe" area, and within this is a plot of the CMYK colors, and the RGB colors.
Digital art that is comprised of spot colors (e.g., special colors: any colors that are not CMYK process colors), generally require conversion to the CMYK color space to enable file use.
dx.sheridan.com /advisor/cmyk_color.html   (726 words)

  
 US FDA/CFSAN: Color Additive Status List
This status list provides current information concerning color additives, and will enable you to determine the status and limitations of most color additives likely to be encountered in a food, drug, device, or cosmetic establishment.
Any color additives not included in this listing and found in the possession of manufacturers or processors where they may be used in foods, drugs, devices, or cosmetics should be referred to your district for consideration.
of additive and ≤ 150 ppm by wt.
www.cfsan.fda.gov /~dms/opa-appc.html   (3793 words)

  
 Profotos - Photo Glossary (A-B)
•Additive printing - color printing method which produces an image by giving three separate exposures, each filtered to one of the three primary color wavelengths, blue, green and red.
•Additive synthesis - method of producing full-color images by mixing light of the three primary color wavelengths, blue, green and red.
This was viewed by reflected light against a fl background to give a positive image similar to a ambrotype.
www.profotos.com /education/referencedesk/glossary   (3679 words)

  
 Additive Color   (Site not responding. Last check: )
When two primary colors of light are added together, you get a color that is brighter than either of its components.
The pixels of the screen are made of triads which are sensitive to the three colors, based on the proportion of red, blue or green light striking the triad the pixel can appear in any single color.
Printing a color image on a piece of paper uses the "subtractive" colors (cyan, magenta and yellow) to produce red, blue and green.
www.geog.ucsb.edu /~jeff/115a/history/additive.html   (201 words)

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