Many people have long thought about how to see at night, like a cat or any other animal that is capable of it. This issue was of particular interest to the military. After all, if you teach a soldier to see at night, it would give huge advantages over the enemy. And the operations carried out by special troops would be much easier and would bring significant results.
Of course, scientists have already come up with a night vision device that allows you to see at night without loss, but in this case it is very easy to incapacitate a soldier: you just need to turn on the light or point the flashlight in the face. The shock of the nervous system that arises from this is akin to shock, and a person may even go blind. Therefore, the invention of a new technology that allows you to see at night without using special means is still in the first place among military inventors.
Thanks to the scientist Kekcheev, who has been dealing with this problem for a long time, todaythere is a unique technique that allows you to slightly improve vision in the dark. But still, even thanks to her (despite the mass of ads promising to teach anyone who wants to see at night without special glasses for a certain amount of money), vision in complete darkness is unattainable for a person.
History knows only one such case, connected with Nikola Tesla and the fact that he was exposed to a strong magnetic field during one of his experiments. But the case is so overgrown with legends that, according to one version, Tesla received a unique hearing and the ability to see in the dead of night, and according to another, he fell into another dimension. The second version of this legend was even brought to the screen and featured in the film The Prestige.
It's all about the structure of the human eye. He needs a light source to be able to distinguish the surrounding objects. By the way, cats and even owls also need such a source, just in order for animals to be able to see at night, the light from it must be much weaker. Otherwise, they are more sound-oriented.
But back to the development of the scientist. Kekcheev drew attention to the speed of adaptation of the eye to vision in the dark and sought to increase it. It must be said that he succeeded. And the only advice for those who are trying to improve their ability to see in the dark is to rub their eyes after entering a dark place and wear glasses with red filters in the dark. In the first case, the rate of getting used to the dark increases, and in the second case, the glasses are able to “keep” this state and smooth out the transition ifa bright light source suddenly appears. This, by the way, is very useful for drivers of night flights.
Special cells of the eye are responsible for vision in the dark - “rods”, so named because of their appearance. If there is a lack of vitamin A in the body, then the disease nyctalopia occurs, or, as the people say, “night blindness”. Its treatment is reduced to the appointment of vitamin preparations. This, by the way, can serve as an answer to the question of some patients: “What should I do if I can’t see well at night?” But the uncontrolled use of a large amount of vitamin in no case will lead to the fact that a person will see in complete darkness. This will only lead to another problem related to hypervitaminosis.
