User talk:Physicsxuxiao

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Hi there. When editing an article on Wikipedia there is a small field labeled "Edit summary" under the main edit-box. It looks like this:

The text written here will appear on the Recent changes page, in the page revision history, on the diff page, and in the watchlists of users who are watching that article. See m:Help:Edit summary for full information on this feature.

Filling in the edit summary field greatly helps your fellow contributors in understanding what you changed, so please always fill in the edit summary field. If you are adding a section, please do not just keep the previous section's header in the Edit summary field – please fill in your new section's name instead. Thank you.

CIE etc.
You can post questions on the article talk page, instead of on your user page, and be more likely to be noticed.

Please review your edits before saving, make sure the sentences are readable, and add spaces after periods and commas. I'm working on cleaning up your recent contributions. Dicklyon (talk) 16:02, 27 June 2013 (UTC)

I took out your main new paragraph, as it's unsourced and hard to interpret, and I think misattributes the finding that no set of real primaries can span all colors; didn't Maxwell have that already? Here it is, for reference:


 * In early color vision studies, sensitivity peak response of the three types of cone cells were thought to correspond with three kinds of light wave bandwidths with fairly narrow range, these generally correspond to red, green and blue light. Thus, tristimulus values associated with a color space called RGB color spaces were first used to describe this behaviour of the cone cell types. These three colors comprised the threeprimary colors in a tri-chromatic additive color model. But in the early 1900's experiments of W. David Wright[3] and John Guild[4] proved that it was in fact impossible for the human eye to sense some colors unless some values of tristimulus values are negtive. Therefore, the three primary colors in a CIE XYZ description for color space were not adequate or optimum descriptions for real colors in the sense negative values for tristimulus values were needed to describe colors sensed by the eye, and this capable CIE XYZ model could be improved with some revisions. The following better explains CIE XYZ and revisions made to improve modeling human color vision.

What you're trying to do seems OK, but let's base it on sources and write it carefully. Respond here if you have a source that you're relying on, and I'll look at it, too. Dicklyon (talk) 16:15, 27 June 2013 (UTC)

Thank you for your help,I revised this paragraph with my memory of the text book by Hunter,who established the CIELAB space.But my book has been lost.Yet you can find some clues in Young–Helmholtz theory and the experiments of W.David Wright[3] and John Guild[4]. And the idea of analyzing mixing color by mathmatics is from Hermann Grassmann,so I don't think Maxwell know that no set of real primaries can span all colors.The story of primary colors must complemented by the experiments of W.David Wright[3] and John Guild[4].

Advice
OK, some advice:


 * 1) Don't edit war, or violate the 3 revert rule
 * 2) Discuss problems on the talk page
 * 3) Provide references for what you're arguing about.

This isn't my area of expertise and it looks quite technical, so the references are required. Barney the barney barney (talk) 15:18, 26 July 2013 (UTC)