Horizon Illusions - Is Seeing Believing?
Horizon explores the strange and wonderful world of illusions - and reveals the tricks they play on our senses and why they fool us. But all this trickery has a serious purpose. It's helping scientists to create a new understanding of how our senses work - not as individual senses, but connected together.
Examples-
It can appear to spin in both directions because the sequence of 2-dimensional images on your eye is identical for a 3-D diamond spinning either to the left or to the right. When we look at the spinning diamond, our brain doesn't actually know which way it is spinning. And because both directions of motion are possible, it bounces between the two options depending on where in the diamond we are looking.
2.Brightness Illusion - colours out of place
If you put the mask on the picture you will see that they are in fact the same brightness.
This happens because our brain does not create its perceptions of brightness from only the intensity of a single surface or light in a scene, but according to the relationships between all the surfaces and lights in the scene. In other words the brain always uses context to figure out what's in front of it.
3.Impossible Slopes - depth perception
We see the balls appear to roll up the slopes of the model towards the middle.
This is because all the information in the image is consistent with the supporting legs of the model standing at right angles to the floor. Because of this, the brain interprets the middle leg as being the tallest leg in the model. Which means the ramps must actually slope upwards. As a result, the rolling balls appear to roll up - now down, which they really are.
Because the image hitting the retina is only 2 dimensional, in order to see the world in 3D, our brain must create its 3D perception based on its past experience of the most likely 3D configuration given the 2D image. Sometimes this means even perceiving a world that goes against the laws of physics.
When you change your perspective you see the slopes actually point downwards into the middle.
Great post, very informative. Can you draw conclusions from these optical illusions? Can you link to implications in real life?
ReplyDeleteyes sir, if we go to see sir its like if we are passing through a hot and arid region sometimes we come to see there's some water like on road but when we go near it we can find no water,its called a Mirage and it is due to our optical illusion and we can also see it in cool regions which is called looming.in looming we come to see as the ship it moving higher or is just at its own place but actually its moving forward. thankyou for the remarks sir
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