Timeline for Scientific Accuracy - Advantages and Complications of Tetrachromacy Underwater
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
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| Aug 4, 2017 at 19:06 | comment | added | AlexP | @hszmv: Color is not wavelength, but rather it is related to the spectral composition of light, at least for objects which occupy a large enough part of the visual field; for example, computer screens do not emit any "yellow" wavelength, but have no problem showing the color yellow. For another example, there is no wavelength producing purple: purple is what is called a non-spectral color. And as for the comparison of internal sensations, I agree that it is impossible. | |
| Aug 4, 2017 at 19:01 | comment | added | hszmv | We can agree on the consistency of the parse between any two individuals, but we cannot know if that parse consistently looks the same between two indivuals. | |
| Aug 4, 2017 at 18:58 | comment | added | hszmv | I am refering to en.wikipedia.org/wiki/Qualia "Qualia" which is different. I ceed that the scienfic measure of a color corresponds to a particular wave length, computer information storage range, and description general items of that color. I also cede the symptoms of colorblindness as a defect in the ability to parse one particual color. Where my arguement lies is in the experience of that color. You and I can agree that green is a range of electromagnetism that our brain parses into a visiual component... but we cannot know if we parse it the same way (cont). | |
| Aug 4, 2017 at 18:33 | comment | added | AlexP | @hszmv: For humans, who can speak and follow instructions, there is an empirically well-defined "standard observer" defined by the International Commission on Illumination (CIE, from its original French name, Commission internationale de l'éclairage), for which a standard "general human" colorspace, CIE L*a*b* has been empirically measured; in practice, empirical experimentation shows that the vast majority of women, and about 3 men out of 4, perceive color quite close to what is expected of a standard observer. | |
| Aug 4, 2017 at 18:25 | comment | added | hszmv | Forget animals, we can't describe color between individual humans in a reliable way to ensure that what I see is red is the same color that you see as red... Now, if I say it's red like an apple, and you say yes, that is correct, it doesn't establish that your perception of what is red is the same as mine. You're mind may make red what my mind makes purple... and we'd never know, because an apple is still a red fruit and that's the best we can get at describing what red is supposed to look like. | |
| Aug 4, 2017 at 13:06 | history | answered | AlexP | CC BY-SA 3.0 |