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The color vision of birds stops working considerably earlier in the course of the day than was previously believed, in fact, in the twilight. Birds need between 5 and 20 times as much light as humans to see colors. ... For humans and horses, color vision ceases to work after dusk, at light intensities roughly corresponding...
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www.sciencedaily.com/releases/2009/11/091111121543.htm
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The color vision of humans and some other primates differs from that of nonprimate mammals. Analyses of primate visual pigments show that our color vision evolved in an unusual way and that the brain is more adaptable than generally thought. ... Humans seem to represent them akin to a convex combination of the three colours,
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digg.com/general_sciences/Color_Vision_How_Our_Eyes_Ref...
digg.com/general_sciences/Color_Vision_How_Our_Eyes_Reflect_Primate_Evolution
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Color vision - Wikipedia, the free encyclopedia
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Color vision is the capacity of an organism or machine to distinguish objects based on the wavelengths (or frequencies) of the light they reflect or emit. The nervous system derives color by comparin...
en.wikipedia.org/wiki/Color_vision
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Explanation of how we see colors. Learn what are rod cells, and how they help the eye with night vision, while cone cells in the eye help humans perceive colors. ... "Although you can see shapes fairly well, colors are completely absent. It is remarkable how few people realize that they do without color vision in dim light."
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www.hhmi.org/senses/b110.html
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The eye's high resolution color vision system has a much narrower angle of coverage. This system can flexibly adapt to widely varying illumination colors and levels. It evolved primarily as a daylight system and ceases to work well at very low illumination levels.
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photo.net/photo/edscott/vis00010.htm
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Color vision is good for increasing contrast between objects and could have been useful for the creatures to find prey or elude predators, Bailes theorized. ... Listed below are links to weblogs that reference First Land Creatures Had Wider Range of Color Vision than Humans:
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www.dailygalaxy.com/my_weblog/2007/10/first-land-crea.h...
www.dailygalaxy.com/my_weblog/2007/10/first-land-crea.html
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The perception of color and illumination: I use specialized computer equipment to generate colored perceptual illusions of either 2- or 3-dimensional scenes to determine how illumination affects the colors we see. ... Multi-sensory integration: I study how humans combine sights and sounds into a single,
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www.wfu.edu/academics/psychology/faculty/schirillo.html
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Calculator of Vision of Anything is a full of features tool concerning color vision of humans, nonhuman animals and artificial vision systems. Includes data for nearly 200 animal species and over 250 spectral distribution curves.
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www.softpedia.com/get/Multimedia/Graphic/Graphic-Others...
www.softpedia.com/get/Multimedia/Graphic/Graphic-Others/Calculator-of-Vision-of-Anything.shtml
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It should also be noted that many humans carry more than one copy of the middle wavelength-sensitive cone opsin. As this is grist for the evolution of color vision mill, we're literally ripe for the addition of a fourth cone class.
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www.talkorigins.org/faqs/vision.html
www.talkorigins.org/faqs/vision.html
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