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As humans, our color vision influences everything from our art and poetry to the colors we paint our homes and the clothing we choose to buy. Yet, we rarely question the mechanics of our color perception – or what we may not be able to see...
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www.webexhibits.org/causesofcolor/1.html
www.webexhibits.org/causesofcolor/1.html
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The human eye can see 7,000,000 colors. Some of these are eyesores. Certain colors and color relationships can be eye irritants, cause headaches, and wreak havoc with human vision. Other colors and color combinations are soothing.
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www.colormatters.com/optics.html
www.colormatters.com/optics.html
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The human eye works in much of the same way as a camera captures images on film. Its "film" is the retina, a thin layer of neural tissue lining the back of the eye, made of photoreceptor cells that receive light, and other cells t...
http://www.ivanhoe.com/science/story/2008/08/468si.html
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Erica, The reason we can't see colors at night is pretty interesting. It all comes down to the fact that humans really have two different visual systems at work in our eyes. One kind sees red light, one sees blue, and one kind sees green. All colors are made up of a combination of these three colors. So, when you see a color,
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www.madsci.org/posts/archives/jan2000/949047063.Ns.r.ht...
www.madsci.org/posts/archives/jan2000/949047063.Ns.r.html
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The schemes of the previous figures neglect a problem called "color constancy". We see colors as unchanged even when there are large changes in the spectral properties of an illuminant.
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webvision.med.utah.edu/Color.html
webvision.med.utah.edu/Color.html
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Your eyes evolved to see rosy cheeks. ... The spectral sensitivity of color cones in humans and chimps are somewhat unusual. Bees have four color cones that are evenly spread across the visible color spectrum. Birds have three color cones. By contrast, humans have three types of cones that are sensitive to a limited range...
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news.cnet.com/8301-10784_3-6050019-7.html
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Quirks & Quarks with Bob McDonald, heard Saturdays from 12:06 p.m. on CBC Radio One ... 1. Color Vision; I know that cats and dogs don't see color, but humans do. What other mammals see color? Dr. Marva Sweeney-Nixon, professor of biology at the University of P.E.I. 2. No Sun; How long would we live if the sun went out?
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www.cbc.ca/quirks/archives/02-03/dec28.html
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Cone cells on the other hand are less sensitive to light but show great sensitivity to different colors. It is the cone cells that allow us to see in color. ... For example, birds such as hawks have a significantly higher number of cones than do humans. This let them to see small animals from a long distance away,
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www.accessexcellence.org/AE/AEC/CC/vision_background.ht...
www.accessexcellence.org/AE/AEC/CC/vision_background.html
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Some animals do have good color vision. Monkeys, ground squirrels, birds, insects, and many fish can see a fairly good range of color. In some cases it's not as good as what we humans see - but it's much better than cats and dogs.
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www.colormatters.com/kids/animals.html
www.colormatters.com/kids/animals.html
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