How and why do we see optical illusions? Really I need a good answer so look it up.?
370940
The Human brain put images together because they have learned to expect things, and sometimes the data might get a little confused. \n\nWe may see an illusion because we know what we are expected to see, even though part of a picture or design may not be completely there. The basis of this is in how we perceive things. \n\nThat almost explains everything right there. If our brain and eyes did not function like they do, we would not see illusions like we do.\n\nOne example of optical illusion is the television. The television is just shows us a continuous flow of still pictures, one right after the other. Our eyes along with your brain fill in all of the empty spots. Our brain has learned to expect movement. As a result, our brain can fill in all of the missing pieces and the television appears to be actually moving to you, even though it really isn’t! \n\nA computer monitor is also one big optical illusion. Sometime when you have a chance, look at a computer screen really close for a minute or two. You will notice that you computer screen is made up of tiny red, green, and blue dots. The illusion is, you see more than just red, green, and blue dots; you see thousands of different colors. Our brains put the red, green, and blue dots together to make the colors. \n\nOptical illusions just trick you into seeing something else. They are an error in our perception of the illusion.
63728
Although we see with two eyes, each of which creates its own, slightly different image, we normally have single vision, meaning we see only one image of an object. This is because your brain can normally control the muscles that move each eye carefully so that both are pointing accurately at the object you are looking at. When each eye produces its own image, your brain then joins them together into one. This gives us what is called ‘single binocular vision’.\n\nDouble vision can be an effect that you can create yourself. For example, if you hold your finger in front of your eyes and then look past it into the distance, you will experience double vision. This is normal.
1043069
B - the reason you can see an object is because light bounces off of it. if light bounced off of an object evenly, then you would have to be in a specific location to see it (think of a mirror reflecting a laser. you can't see the laser beam in the mirror, ideally, if you are shining it at an angle). if the light is reflected unevenly, then you can see it at pretty much any angle.
1166560
True and well-stated, matter is another name for illusion.We acknowledge that all the individual features of the world are experienced through our sense organs. The information that reaches us through those organs is converted into electrical signals, and the individual parts of our brain analyze and process these signals. After this interpreting process takes place inside our brain, we will, for example, see a book, taste a strawberry, smell a flower, feel the texture of a silk fabric or hear leaves shaking in the wind. \nWe have been taught that we are touching the cloth outside of our body, reading a book that is 30 cm (1 ft) away from us, smelling the trees that are far away from us, or hearing the shaking of the leaves that are far above us. However, this is all in our imagination. All of these things are happening within our brains. \nAt this point we encounter another surprising fact; that there are, in fact, no colors, voices or visions within our brain. All that can be found in our brains are electrical signals. This is not a philosophical speculation. This is simply a scientific description of the functions of our perceptions. In her book Mapping The Mind, Rita Carter explains the way we perceive the world as follows:\nEach one [of the sense organs] is intricately adapted to deal with its own type of stimulus: molecules, waves or vibrations. But the answer does not lie here, because despite their wonderful variety, each organ does essentially the same job: it translates its particular type of stimulus into electrical pulses. A pulse is a pulse is a pulse. It is not the colour red, or the first notes of Beethoven's Fifth—it is a bit of electrical energy. Indeed, rather than discriminating one type of sensory input from another, the sense organs actually make them more alike.
1126648
Color is actually made up.  We are seeing waves of light and our brain is interpreting them into what we perceive as colors.  Also, we see the waves of light that are being reflected off of things.  So if we see something as being blue that means that the other waves of "color" have been absorbed.  Quite interesting really, and a very good question.  Keep it up, I have had few good questions recently and was about to give up for the night.
10093
Over everything else, our brains are pattern recoginition machines.  They are very, very good at filling in blanks -- even if they shouldn't.  The usefulness of this comes when coupled with our reasoning ability to figure out if things are important illusions, i.e. if the sabre-toothed tiger went around that side of the rock, he didn't just disappear, he's probably also coming out on the other side... but he can't see me right now either.
286285
i don't think its that complicated we can only see a fraction of what is around us because of our very poor eye sight and other senses such as smell and touch. i agree with you that there are many other level that we cannot see or feel, but that is our loss. try not to concern yourself with things you have no way of being part of, as there are more things in heaven and earth than you could possibly ever imagine if we could see all levels it would blow our minds.
86659
You cant. What you are seeing is an illusion. You are the only think that is real in the universe.\n\nJust kidding.\n\nThe above concept, by the way, is called Solipsism, i believe, that you are the only thing that is real, and all else is an illusion.\n\nBut seriously, the only way you can believe anything is to test out the theory that it is true. So, test out the theory that what you see is truly there. If you can touch it, taste it, experience it, then even if it is not there objectively, it is there subjectively, which is all that is important.
1132483
their is one in (north burlington ontario) as well  .I have also read their is one in  Oshawa ,ontario, If you go to the bottom and place your car in neutral it drags your car uphil slowly .\n____________________________________________\nscientifically it is an optical illusion \nSometimes you may find or hear of a mysterious place where objects can apparently roll uphill. This is a remarkably common illusion which is found in numerous locations around the world. Usually it is a stretch of road in a hilly area where the level horizon is obscured. Objects such as trees and walls which normally provide visual clues to the true vertical, may be leaning slightly. This creates an optical illusion making a slight downhill look like an uphill slope. Objects may appear to roll uphill. \nSpots where the illusion is especially powerful often become tourist attractions. Tour guides may like to claim that the effect is a mystery or that it is due to magnetic or gravitational irregularities or even that it is a paranormal phenomenon which science can not explain. This is not true of course. Natural irregularities can only be detected with sensitive equipment and cannot account for these places but science can easily explain them as optical illusions. \n\nThere are several things which enable us to sense which way is up. The balance mechanism in our inner ears is one system we have, but visual clues are also important and can be overriding. If the horizon cannot be seen or is not level then we may be fooled by objects which we expect to be vertical but which aren't really. \nPeople often overestimate the angle of a slope. If you are standing on a slope of 1 degrees it will seem like a slope of 5 degrees. Because of this effect the anti-gravity illusion can seem stronger than it should be even when you know the cause.\n\nEven when the true cause is understood it can be difficult to believe. If you think there is a magnetic anomaly just use two plumb lines, one made of iron and one of stone. They would hang at different angles if a strong magnetic field was acting horizontally. \nHowever, it is not always easy to demonstrate that a slope which appears to go uphill is really going downhill. The only reliable way of determining the true horizontal is by careful surveying. If a good topographical map of the area is available it may be sufficient to show which way the land is really sloping. The results will confirm the illusion. \n...\nyou can also check the info I found on the Oshawa site \nhttp://www.shopinoshawa.com/magnetichill.htm
59683
Here is an excellent site about optical illusions:
287924
That's because light reflects in the mirror just as if it's coming from the same distance the real object is but behind the mirror.  You are nor looking an image that is at the mirror distance, but really at the real object distance.
545742
Simple answer:\n\nA ray that does go not into your direction doesn't has a chance (unless reflected by something) to go into your eye and be "seen". If it gets reflected in a diffuse way for example by a wall and then goes into your eye you see a bright spot on the wall. If it gets non-diffuse reflected by a mirror you see an image of the bulb.\n\nWelcome to the world of geometric optics ;) ! \n\nIf follow the light ray in the other direction like a "see ray"  you get the principle of all the ray tracing computer programs that produce these nice computer images and animated movies.
1053030
Everything you see comes from light that enters your eyes.  The study of light is called OPTICS it is part of the science named PHYSICS.\n\nWhat your reflection looks like depends on a lot of things.  How large is the sphere? Where are you standing in the sphere?  If you think about it, what you see in the mirror depends on where you stand.  You can try this in just a regular flat mirror.  Stand in different spots, and look at what you see.\n\nI have given you a few links showing diagrams of how light rays are reflected in a spherical mirror.   If you were inside, you would be seeing a concave surface.\n\nEscher drew pictures of what he would look like in a spherical mirror, from the outside.  You can do this yourself,  by looking in the gardening area for a mirror globe, or a glass Christmas ball.\n\nA concave reflecting surface can be found in a magnifying mirror, or in a spoon or bowl.  I have also included a link to purchase spherical mirrors and other optical  devices.  Finally, I have included a site with some virtual optical experiments.\n\nI hope this helps to answer your question.  Have fun!
510761
Watch the ones who use a hoop to "prove" the person is "floating".  The hoop *never* goes around the person completely.  \n\nThe *illusionist* starts at the feet, goes to the head, but instead of going around the head, he goes back to the feet.  Why?  Because the "floater" is on a platform with a leg to hold them up.
718058
What you speak of is called Decepcion Detection.  The actual movement of the eyes represents the brain trying to see (uper right), hear (Lower right), or feel (upper left), the truth.
38582
I realize I am out of my league as far as physics,, but the image reflects directly back to the source in front of it. For the reflection to appear upside down or vertically mirrored the light would have to be bent.\n\nok looked it up.  It is because of the predicatable behavior of light known as the law of reflection
655851
That is an excellent question.\n\nAnd a question that is further complicated by the fact that not everyone sees ghosts and we certainly don't know what ghosts are yet.\n\nWithout knowing what they are it is very difficult to determine why some see them and others don't.\n\nI personally think it has something to do with the biological (chemical and structural) make-up of the brains of those who can see ghosts.\n\nOf course, some ghosts are easily explained away as hallucinations, mistaken identity, trick of the eye, optical illusion, etc.  Others may be the cause of certain environmental factors, such as high levels of EMF, on the brain.\n\nJaime