What if people had eagle vision: eye – diamond
In our country, visual acuity, that is, the ability of the eye separately perceive two points, located apart at the minimum conditional distance, is determined by the shares of the unit on the Sivtsev or Golovinsky table. If you have 1.0, then you are the owner of excellent vision. All that is less – 0.9, 0.8 and t. D. up to 0.1 – determined by the number of rows that you can see from the distance of five meters. But the acuity of view even a healthy person is only 20% of the vision of eagle and other predatory birds. This means that the oculist will not put 1.0, but 5.0. That is, you can read a book at a distance of 25 meters.
Seriously, scientists have to carry out special and very complex experiments to assess the vision of birds of prey, since the classic posters "SB" in this case are completely useless – alas, eagles fucking are illiterate. One of the common schemes includes bird training to fly along a long tunnel to two screens, on one of which attracts the drawing. Visual acuity in this case depends on how long the eagles begin to be aimed in the right direction.
Professor of the University of Maryland William Khodos studies the vision of birds from the 1970s. Scientist says that the more acute vision of the eagles provide two features of the eyeball. First, their retina is much more fearful than the so-called columns – by special photosensitive cells. It is like a camera matrix with a higher pixel density that increases the resolution of the cameras.
Secondly, their central yam (lat. FOVEA Centralis) – a small deepening located in the center of yellow spots (Lat. Macula Lutea) retina eye – much deeper. This light-sensitive receptor structure in the back of the eye of both people and eagles, enhances the central field of our view. Researchers believe that a deep central fossa allows eagle eyes to work as a telephoto lens.
Another useful feature of predatory birds – they see the colors brighter than we distinguish more shades, in addition you can see ultraviolet radiation. The last function is needed for hunting: it is so easier to detect reflective ultraviolet rays traces of urine minor rodents. It is difficult to say who from people will be useful to this bonus, but more shades will be accurately useful.
Human eyes are arranged at an angle of 30 degrees relative to the central line of the skull, the field of view is 180 degrees. Be instead of our Eye orlyn, we could see almost completely behind the head, and the field of view would increase to 340 degrees. Excellent advantage during a walk through the night Lyuberez and during the sale.
Outside, one advantages? Not certainly in that way. In the birds most of the brain volume is given to the processing of images. If somewhere something else, then elsewhere – deficiency. So with eagle vision, or rather, the brain: most birds the sense of smell and the ability to distinguish the tastes are not as developed as other animals.
And it seems like a loss of loss, but scientists do not fully know how things are dealing with more complex cognitive processes: memory, attention, feelings, logical thinking and imagination. Some experiments confirm that birds have the ability to solve problems, in addition they have good memory. Scientists suggest that birds have areas of the brain that perform the functions of the crust, but so far this hypothesis is not confirmed by neither theoretically nor practically.
The lifestyle of Orlov requires better vision than people need, and the physical properties of our eyeballs limit us with vision 1.0, and then not everyone is lucky to have such sharpness. Eagle eyes with an incredible field of review, farewell and color, of course, a tempting bonus. The problem is that it will have to pay a high price for him, because the ability to increase the brain volume we do not have. Yes, and whether we need it: when you last hunted rodents from a 200-meter height?