There's a widespread belief that dogs only see in black and white, but that's just not true—they can see some colors. Structures in the eyes called cones are what allow us to see color, and most humans have three types of cones; dogs, however, only have two—they lack red-green cones and therefore can't really see those colors. They likely appear gray or brown.
As for why that is, dogs' vision evolved to be optimized for hunting in low light, meaning their night vision is ultimately more important than their color vision.
Well, both are affected. But it is primarily the males that are affected.
Dogs are not color blind - they see color, but their chromatic acuity is significantly less than humans'. This is for two reasons: (1) dogs have far fewer cone cells in their retina (cone cells are responsible for seeing color); and (2) dogs are dichromatic (they see only two primary colors - blue and yellow) whereas humans are trichromatic, meaning we see three primary colors - red, blue, and yellow.
Humans have 7 times higher proportion of cone cells than dogs, meaning that when dogs do see colors, they are pale or faded. However dogs have a much higher concentration of rod cells, which are responsible for seeing black-and-white, and also much more sensitive in lower light conditions. For that reason, dogs have much better night vision than people.
Well actually dog aren't color blind... they can see colors like grey, black, and white, etc. so they are down the middle of blind and not blind. They can only see dark colors.
Have a good day :)
Actually, some dogs can see some colors, like blues or greens. Scientists are still trying to figure out what can and cannot be seen. But, most dogs can see some color, but mainly black and white.
not really they can see colors like us. only dogs have hard time seeing colors that are simaliar in looks like red and orange. sometimes they see colors darker or lighter in color. Some dogs have eye vision that can only see black and white
It is a common misconception that dogs see only in black and white. Cone photoreceptors are the cells in the retina responsible for color vision. They are present in dog and cat retinas. Although dogs and cats do have some color vision, there are species differences in color vision. Humans with normal vision have 3 types of cones. Dogs and cats have only 2 types of cones so they do not experience the same spectrum of color vision that we do. Color vision in dogs and cats is called dichromatic versus trichromatic color vision in people. It is thought that dogs can see blues and yellows the best and that they can distinguish reds from blues but that they have difficulty distinguishing reds from green. They are considered similar to red-green color-blind humans.
Of course, this is what we THINK... Until we find a way to actually communicate with them, we won't be able to ask them to find out for sure.
They are, however, predators so they need color to see prey and potential danger.
Nobody can tell for 100%... you can have one scientist saying yes they are and one that says no they aren't. :( it bugs me too. Scientist are trying to figure it out but still nobody knows fro sure! :(
Some animals are color blind... Just some can see some certain colors, like a horse can see blue's and greens, deer can see yellows and greens..etc...
Dogs most definitely are not color blind. There are some differences in their vison from that of humans, but -- contrary to popular myth, their eyes contain both rods (cells that detect light and movement but not color) and cones (which detect color and need more light than rods do in order to activate).
Rods are groups of light sensors connected to one neuron. Cones, on the other hand, are one neuron per cone and, unlike rods, have a narrow range of wavelengths they'll respond to. Dogs' cones respond to, what in the human range of vision, would be yellow, and blue-indigo.
Most breeds of dogs also do not resolve images well at distance, with a focal range of about 20/70 (to a human's healthy vision of 20/20). This means, what you see at 75' is about what a dog sees at 20' (exceptions are Labrador Retrievers, who approach 20/20 -- which is why they're often used as guide dogs).
Dogs also have a wider angle of acceptance -- around 270 degrees (as opposed to a human's 180 degrees). This means they are more aware of events on the periphery of human sight of course, but as the acceptance angles of vision of the two eyes don't intersect as completely as humans, they don't get really good distance ranging except for a small angle of acceptance directly in front of them.
You can pretty easily test this if your dog likes retrieving. Get a bunch of identical balls in different colors, and watch for the surprisingly different reactions.
CLARIFICATION: TURTLES ARE NOT COLOR BLIND!
Source: Turtles, Tortoises and Terrapins: Survivors in Armor by Ronald Orenstein.
At least some turtles can see in the red-orange-yellow part of the spectrum...box turtles (for example) like to eat berries, and the color vision can help them spot the ripening fruit.
Birds are not color blind because you can teach a parrot to recognize colors. This is also true in a peacock's colorful wings.
Good point! While dogs have only two types of cones (see above about cones and rods) that detect yellow and blue-indigo, and humans have 3 (Cyan, Magenta, Green or Red/Yellow/Blue), birds have four, with the ability to see into the ultraviolet as well.
Pure white, shorthaired cats with two blue eyes are often deaf (not blind!)
Pure white, Persian longhaired cats, are color blind.
One in four human males has a form of colorblindness, with differing levels of severity, or acuteness.
Deer are color blind. This is why hunters where blaze orange. It stands out for the hunters, but isn't noticeable for the hunted.A little more..Because deer don't clearly contrast and react to International, Day-Glo(TM) or Safety Orange doesn't mean they're colorblind. It only means they're not able to clearly differeniate these particular frequencies from others. I'm inclinsed to guess that, when deer graze, the identification of food is partially color identification -- but that's a guess.
In fact, very few if any animals perceive only in monochrome or gray-scale. Barring extreme neuro-trauma, humans never do. Even in cases where severe brain injuries plays a part, the most extreme case I've seen documented (Sax et al, "Anthropologist on Mars") was an artist who, after a severely neuro-traumatic event, could only see in gray-scale and in a very narrow frequency span in the yellow-orange region....
Domestic Ferrets see in shades or tones of gray and can see some red
It was discovered in 1798 by John Dalton who was himself color blind.
i am sure you could find out somewhere on the web, but would be easier to just buy anodized bolts or take em to a company that does anodizing
contacts, glasses, laser eye surgery, take your pick.
I was told by a pool supply store in Cleveland, Ohio, that they have heard of more instances of the black covers falling apart than the others. The guy in the store suggested it is because the black absorbs more of the sun's heat, causing the more rapid breakdown in the material. He had heard nothing about the clear covers, but speculated that it would hold up better than the black. Swimming pool covers help retain pool heat by reducing evaporation. For this purpose, color does not matter. At night any cover will have about the same effect. During the day though, solar energy from the sun heats the pool. You see all sorts of claims from cover manufacturers that their blanket "heats" the pool. This is false. All blankets block some of the solar energy coming from the sun. So which one blocks it the least? According to a government report I read, clear covers block 5-15% of the sun while colored ones block 20-40%. It's clear that clear is the way to go (sorry about the pun). The question then becomes, should I uncover my pool during the day when it is not in use? It depends. On calm, humid days, take it off for maximum heating. On dry, windy days, the evaporation loss outweighs the cover loss, so leave it on. Always leave it on on cloudy days and at night. Dave O
You can't describe it. The color pink is strictly visual - it is a light of varying wavelengths and frequencies. Just like you couldn't answer what pink sounds like; the color pink will always remain foreign to a blind person.
That is a beautiful question you have. Pink is the soft pillow you felt as a baby or the soothing voice of your mother. You could also describe pink using the sense of taste, such as bubble gum flavored ice cream.
I also think that is an excellent question. Pink is the way you feel when you love someone. Pink is the way you feel when you touch a flower in April. Pink is the way a lollipop tastes on the tip of your tongue.
The best way to allow a blind person to experience pink is through their sense of smell and touch. Let them smell a rose. Let them feel the petals on the rose, which are tender like a baby's hand.
Pink is a softer version of red.
Blue rather than green is the colour associated with St. Patrick and some flags were "St. Patrick Blue" in colour.Answer
Also the Irish flag that still appears on the English Royal Family's coat of arms is navy blue with a gold harp.
It can be seen on photos of Princess Diana's casket if you're curious as to what it looks like.Answer
In response to Claire that's a Leinster flag not an Irish one
Note - That is actually the Irish crest on Diana's coffin and not actually the Lenister Flag. This crest is now used by the President of Ireland.Answer
Hi, I'm born and bred in Ireland so I'm positive that blue not only was once the official colour of Ireland but still is. As a result it is the colour of the carpet in the Dail (pronounced 'Dawl') which is the Irish seat of government.
There is no official colour of Ireland as such. However, St Patrick's Blue and Presidential Blue are the colours that the Government of Ireland use for their day to day business. You will see the two different blues in the Dublin County football colours and on the old Aer Lingus liveries. The light blue is the St. Patrick's Blue, the dark one is the Presidential Blue which appears in the Irish crest. Dark blue with a gold bardic harp. Green is only a customary colour and cannot and should not ever be considered as the official colour. The previous answer is quite correct about the DÃ¡il using these colours in the carpet. There are various examples of this blue being used in many official Irish Government buildings and meetings. Have a look the next time you visit an Irish Embassy to see what colours are on display.
Actually, blue has been the national colour of Ireland since the 12th century.
Here are opinions and answers from WikiAnswers Contributors:
by injecting the colours in ccfl lamp and it genrate rgb colurs...and
It is appealing
Red is an appealing colour. It is eyecatching, and possibly makes you think of apples. Does some muddy brown colour make you want to eat? No, probably not. Red is much nicer, and generally not associated with something gross.
Try it out!
Have you tried eating blue colored rice? I did, and my appetite just vanished completely. I couldn't! Same with a blue cake. I baked it for class, but no one ate it. When you try this, make red and yellow colored rice too.
Yes, of course glitter is a color. It's not only a color, but also a way of life. Glitter is a life changing substance that has its own personality. If you believe in the magic that is glitter, your life will be glitterfied. Some people are dropped as a kid that's why they think glitter is not a color. I however, was dropped in glitter, so I know the truth.
Green and yellow make blue mural.
yes they are
Beat it, meaning cheat on it? Sure. Plenty of ways. You could study the test ahead of time so you know by the patterns what number is there; you could have a non-colorblind friend tell you the answers; you could bribe the doctor... so many ways.
My question though is why in the world would you want to? The test isn't for a grade... it is to determine whether you are colorblind, and that is something that it is helpful to know, because it can affect daily life. For instance, a friend of mine can't tell the difference between two colors when we are playing a certain card game, so he needs someone to check and make sure he really has what he thinks he has.
Maybe if you know this then you can save yourself from larger mistakes at work or school... just by doing something simple like having someone who isn't colorblind check your work.
If you are trying to beat it for the purposes of getting a job, such a pilot or certain types of technician, you need to understand that the guidelines are there for your safety, as well as the safety of others. In certain occupations, colorblindness can lead to fatal mistakes. In those instances, it would be unethical to try to get around this test.
My guess is the video card is going bad. Try replacing that. If you have a spare monitor you may want to try viewing your desktop on a different monitor before going out and buying anything.
First thing I would check is the cable between your monitor and computer. Swap it for another cable if you can detach it from the back of the monitor. If not, leave it be. The inside of a CRT monitor is a dangerous place. You can get shocked and killed by the voltages in there.
If it is an LCD monitor, then it would almost have to be a video card or driver issue. If not those two, then it would mean the monitor would have to be replaced. But one color would not disappear completely on an LCD> You may lose it in spots, but I've not heard of a full failure of one color on an LCD.
If it is a CRT monitor, you may want to try replacing that. Long story short, CRT's use 3 colors red, blue and green) to create the image you see on the screen. The three colors are controlled by "guns" built into the tube. Each one is operated independently, but are synchronized to each other. If one gun or the components that control it fail, then the picture would be as you described it.
In summary, try another monitor on your computer, or try your monitor on another computer. Then you can see if the problem is in your computer case or the monitor itself.
For testing, you can either borrow a monitor from someone else, or many computer shops will check this for you. A smaller high tech shop may even have a workbench with a monitor set up for customer use, usually for a small fee.
Black is absorbed! White is reflected. :)
Monochromatic colors are all the tints, tones, and shades of a particular color or hue. You typically see this on a paint sample card, for example, with lighter and darker shades of the same base color.
Most dogs are, yes.
Eye color has nothing to do with whether you are color blind or not.
Sharks can only see in shades of grey.
Findings from a study by Australian scientists, released in September 2012, show that sharks' eyes have just one type of cone opsin - or light-sensitive proteins found in the photoreceptor cells of the retina - instead of thevtwo or more that are needed to see colour. Cone opsins are used to help animals see in bright light, and to differentiate between colours.