Originally posted by PalynkaIt's a scientific question. An interesting one.
What defines a colour?
It has to do with human perception about photons with various wavelengths.
Wikipedia says:
"Color or colour is the visual perceptual property corresponding in humans to the categories called red, yellow, blue and others. Color derives from the spectrum of light (distribution of light energy versus wavelength) interacting in the eye with the spectral sensitivities of the light receptors. Color categories and physical specifications of color are also associated with objects, materials, light sources, etc., based on their physical properties such as light absorption, reflection, or emission spectra."
Originally posted by FabianFnasSo what is the wavelength interval of black? 😉
It's a scientific question. An interesting one.
It has to do with human perception about photons with various wavelengths.
Wikipedia says:
"Color or colour is the visual perceptual property corresponding in humans to the categories called red, yellow, blue and others. Color derives from the spectrum of light (distribution of light energy versus wav ...[text shortened]... ased on their physical properties such as light absorption, reflection, or emission spectra."
Originally posted by PalynkaWikipedia says this about the subtractive color model:
So what is the wavelength interval of black? 😉
"A subtractive color model explains the mixing of paints, dyes, inks, and natural colorants to create a range of colors, where each such color is caused by the mixture absorbing some wavelengths of light and reflecting others. The color that an opaque object appears to have is based on what parts of the electromagnetic spectrum are reflected by it, or by what parts of the spectrum are not absorbed."
But, as the screen is not started from white, but from black it is not the subtractive color model we would use, but the additive color model. As Wikipedia says:
"An additive color model involves light emitted directly from a source or illuminant of some sort. The additive reproduction process usually uses red, green and blue light to produce the other colors. See also RGB color model. Combining one of these additive primary colors with another in equal amounts produces the additive secondary colors cyan, magenta, and yellow. Combining all three primary lights (colors) in equal intensities produces white."
So perhaps I should say in my first posting of this thread:
"White is also a primary color."
Originally posted by reinfeldWith computers, Green is a primary color.
green is a secondary color. you mix yellow and blue and you get green. it takes TWO things to make ONE green...hence...it is a secondary color. this is clear to all but the lilliputians of delft which you must be.
http://en.wikipedia.org/wiki/Primary_color
(See additive primaries)
Originally posted by reinfeldEVEN Gulliver knew how to use the "Reply & Quote" system...
green is a secondary color. you mix yellow and blue and you get green. it takes TWO things to make ONE green...hence...it is a secondary color. this is clear to all but the lilliputians of delft which you must be.
😞
Originally posted by greenpawn34a 😲 for a loss due to a horrible blunder
Green and Red boxes - that's childish.
How about a 🙂 for a win.
a 😳 for a loss.
a 😴 for a draw.
a 😏 if your win is v a higher graded oppoent.
a 😠 if you lose to a lower graded opponent.
a 🙄 for a resignation in a won position
a 😞 for a stalemate
a 😀 for a win due to the opponent getting banned