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Draugnar wrote:
Ummm.... Only Red is the primary color.
[Pedantic] Red, Green, and Blue are the primary colors. Red, Blue, and Yellow are *a* set of primary pigments (better quality printers use 4 or more pigments for superior color balance). The difference is that the former are emmissive and add up to white, the latter absorptive and add up to black. Your average art teacher wouldn't know the difference unless clubbed upside the head (institutional memory trumps truth), and since most students are required to take Art in school while Physics is an elective... [/Pedantic]
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Enough with this "primary colors" thing... (Yes, I know, I chimed in that only one was a primary color). The following article from Wikipedia makes it clear that there are no fixed primary colors in and of themselves. Primaries are, instead, relative to each other and are about the combining effects upon the human eye. From: http://en.wikipedia.org/wiki/Primary_color[^] ------------------------------------------------------ Primary colors are sets of colors that can be combined to make a useful range (gamut) of colors. For human applications, three are often used; for additive combination of colors, as in overlapping projected lights or in CRT displays, the primary colors normally used are red, green, and blue.[1] For subtractive combination of colors, as in mixing of pigments or dyes, such as in printing, the primaries normally used are magenta, cyan, and yellow.[2] Any choice of primary colors is essentially arbitrary; for example, an early color photographic process, autochrome, typically used orange, green, and violet primaries.[3] Primary colors are not a fundamental property of light but are often related to the physiological response of the eye to light. Fundamentally, light is a continuous spectrum of the wavelengths that can be detected by the human eye, an infinite-dimensional stimulus space.[4] However, the human eye normally contains only three types of color receptors called cone cells. Each color receptor responds to different ranges of the color spectrum. Humans and other species with three such types of color receptors are known as trichromats. These species respond to the light stimulus via a three-dimensional sensation, which can generally be modeled as a mixture of three primary colors.[4] Species with different numbers of receptor cell types would have color vision requiring a different number of primaries. For example, for species known as tetrachromats, with four different color receptors, one would use four primary colors. Since humans can only see to 400 nanometers (violet), but tetrachromats can see into the ultraviolet to about 300 nanometers, this fourth primary color might be located in the shorter-wavelength range. Many birds and marsupials are tetrachromats, and it has been suggested that some human females are tetrachromats as well[5][6], having an extra variant version of the long-wave (L) cone type.[7] The peak respo
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No not pedantic, just correct. Red, Blue and Yellow are the ONLY primary colours, green, purple and orange being secondary as stated.
Reading anything on colors in physics, we see that: cyan, magenta, yellow -- subtractive primary colors, subtract these from white to get any color red, green, blue -- additive primary colors, add these to black to get any color It's not really all that difficult... unless all you remember is kindergarten :laugh::laugh::laugh:
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Enough with this "primary colors" thing... (Yes, I know, I chimed in that only one was a primary color). The following article from Wikipedia makes it clear that there are no fixed primary colors in and of themselves. Primaries are, instead, relative to each other and are about the combining effects upon the human eye. From: http://en.wikipedia.org/wiki/Primary_color[^] ------------------------------------------------------ Primary colors are sets of colors that can be combined to make a useful range (gamut) of colors. For human applications, three are often used; for additive combination of colors, as in overlapping projected lights or in CRT displays, the primary colors normally used are red, green, and blue.[1] For subtractive combination of colors, as in mixing of pigments or dyes, such as in printing, the primaries normally used are magenta, cyan, and yellow.[2] Any choice of primary colors is essentially arbitrary; for example, an early color photographic process, autochrome, typically used orange, green, and violet primaries.[3] Primary colors are not a fundamental property of light but are often related to the physiological response of the eye to light. Fundamentally, light is a continuous spectrum of the wavelengths that can be detected by the human eye, an infinite-dimensional stimulus space.[4] However, the human eye normally contains only three types of color receptors called cone cells. Each color receptor responds to different ranges of the color spectrum. Humans and other species with three such types of color receptors are known as trichromats. These species respond to the light stimulus via a three-dimensional sensation, which can generally be modeled as a mixture of three primary colors.[4] Species with different numbers of receptor cell types would have color vision requiring a different number of primaries. For example, for species known as tetrachromats, with four different color receptors, one would use four primary colors. Since humans can only see to 400 nanometers (violet), but tetrachromats can see into the ultraviolet to about 300 nanometers, this fourth primary color might be located in the shorter-wavelength range. Many birds and marsupials are tetrachromats, and it has been suggested that some human females are tetrachromats as well[5][6], having an extra variant version of the long-wave (L) cone type.[7] The peak respo
Draugnar wrote:
Enough with this "primary colors" thing...
Indeed. Everyone knows that a primary colour is the first one you think of, so therefore has to be taken away!
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Reading anything on colors in physics, we see that: cyan, magenta, yellow -- subtractive primary colors, subtract these from white to get any color red, green, blue -- additive primary colors, add these to black to get any color It's not really all that difficult... unless all you remember is kindergarten :laugh::laugh::laugh:
Indeed, there are various color "systems"; most people only learn red/yellow/blue, yet don't seem to complain when they don't get purple when they mix red and blue.