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black and white
I cruised on in here to resolve a workplace argument about the status of black and white as colours. Sadly the article didn't resolve the dispute (seriously guys - what else is Wikipedia for? :)
- That black and white are clearly “colors” is implied by every reasonable definition of “color”. Cheers. –jacobolus (t) 08:07, 27 January 2012 (UTC)
- I bet he doesn't have any argument to offer, let alone definition, only an appeal to tradition ("I learned that at school"). The fact is that black, white and grey are all colours, what they are not is hues (which can be explained as "rainbow colours", or technically wavelengths), and schoolteachers should really learn to make that distinction. In fact, I think this would be an excellent point to include in the article, given that it's such a popular misconception. --Florian Blaschke (talk) 12:59, 28 March 2012 (UTC)
- I think it's kind of silly to take a position on such an argument. Language usage varies. Plenty of reliable sources contain strings like "white, black, or color", because they think of color as different from white or black. To a color scientist, black and white and gray live in a colorspace like other colors; but color scientists don't determine how language gets used. Dicklyon (talk) 04:49, 11 April 2012 (UTC)
Color scheme of optical interference fringes
Such as in:
It doesn't seem to be the same as in:
It seems more similar to this color scheme:
What is the difference between the two depictions of the color spectrum? The equations for first scheme are described in HSL and HSV; for the second one, I found the formulas in here: . Do you recognize the second formulation? Is it well known? Is it already described somewhere in Wikipedia? I've seen both being used for domain coloring, the first one here, the second one there. I'm looking for a name to label the color scheme seen in optical interference fringes. Thanks. Fgnievinski (talk) 01:58, 11 April 2012 (UTC)
- It's not a spectrum. It's a bunch of Newton's rings of different wavelengths; there's enough in that article to figure out the spectra of the different colors, which are a bit complicated. Or see what Thomas Young (scientist) said about them in his lecture XXXIX, 1845: . Or it's all worked out here, where it says "To show Newton's rings, and that its color sequence is not a rainbow". Since it's not a cyclic pattern like the other two, it might not be so useful for domain coloring. I don't know if the pattern has a name. Maybe "Newton's rings colors". The one you linked on the wayback machine is also not a spectrum; the spectrum is not circular. You need a color circle, like the one illustrated in the figure to the right, that connects red to blue through the non-spectral purples. I don't know of a good formula in WP for that, but there are lots of color circles on commons. Dicklyon (talk) 04:18, 11 April 2012 (UTC)
- Thanks a lot for your pointers, they were very helpful.
- I now understand the difference between a color wheel and a color spectrum -- wheel being circular, spectrum open --, and that domain coloring requires the circular one. Furthermore, a color spectrum would leave out non-spectral colors, such as purple, which is useful in a color wheel, since it offers improved discrimination.
- I also agree that the colors scheme of optical interference fringes is not ideal for domain coloring. That's because in the latter we need a clear mapping between phase and some sort of hue, while the former exhibits a more complicated color scheme, involving also changes in saturation and luminance/value with varying phase difference.
- I think what I was looking for was just a (hue-based) color wheel with less saturation; something like this:
list of colors hatnote
Out of the 6 newest feedbacks on color 5 were looking for lists of colors and didn't find it. I therefor added a link to list of colors in the about hatnote on the top of the article. Ulflund (talk) 06:00, 14 October 2012 (UTC)
Problem with "...people everywhere have been shown to perceive colors in the same way"
The reference cited in that statement and the associated references to "Linguistic Relativity" only show that a large collection of people (a "culture") COLLECTIVELY seems to perceive colors in the same way. But in no way does it show that there aren't differences between how two individuals perceive colors. In fact, we know that individuals do in fact have differences in color perception, as shown by the various types of mild-to-profound color blindness that occurs. As a more extreme example, how do we know that my internal perception of, say, purple isn't the same as your internal perception of brown? Does it even mean anything to ask that question?
As someone with moderate red-green color blindness, I can assure you that my perception of red is very similar to my perception of green. Therefore, if you do not have red-green color blindness, then it follows that at least one of my red or green perceptions does not match yours.
I'm not an expert in the field of color, but I am an expert in two fields, plasma physics and economics, both of which have situations where collective behaviors exist that contrast fundamentally in nature with individual phenomena.
Are there any studies that address these questions? If so, I think it would be useful if someone familiar with them could discuss and reference them in this article.Tdshepard (talk) 23:25, 4 January 2013 (UTC)
- Another example of a different perception of colour within a culture is the variation in identification of certain shades of blue and purple. I have noticed that a car standing alone will have some people arguing it is blue while others argue it is purple, when seen with other cars that are obviously blue it becomes either a purplish-blue or a bluish-purple depending on bias. Are we seeing colour differently or were we taught to see them that way? There was a study conducted around two years ago and made into a TV documentary that found that people do not perceive colours in the same way. The study concluded that identification of colours is learned. Wayne (talk) 03:43, 4 March 2013 (UTC)
- I've read an article a while back that explains how individuals with normal color vision do perceive colors the same way. It even went on explaining how it is not possible for individuals with normal color vision to not perceive colors the same way. I'm gonna try to find the article now but no promise.--Krystaleen 03:51, 4 March 2013 (UTC)
- I just tracked down the notes I wrote down about the study. Experiments indicated that the colour an individual sees for a particular wavelength is not exactly the same colour as that seen by another individual for the same wavelength. It basically found that colour is perceived by the brain based on individual experience and on how usefull it is to that individual knowing of the existance of various colours. Wayne (talk) 03:57, 4 March 2013 (UTC)
Colour Page Move
I do roughly understand the reason for having the word being spelt COLOR on this page as Wikipedia is primarily active in United States of America. However in UK and a majority of the English speaking commonwealth, the English* spelling of Colour. I do not want to fully move it to the English spelling of COLOUR, as people will rage. Instead why don't we finally create harmony by moving the page to Colour/Color, which recognises both the English and American English spellings. Thank You. Let there be peace on both sides of the Atlantic.
- I have called it ENGLISH opposed to BRITISH ENGLISH, as in some cases Welsh and Scottish variants can differ.