How to see in the dark
• How to see in the dark
The ability to learn the ropes, even in the darkest night has always been considered a distinctive feature of specific professions. We see movies about ninjas, easily finding a dark secret cat in a room with no windows and a special agent, who can easily distinguish the original from the Black Square five fakes in tightly insulated silo. Naturally, we want to be able to as well - even if the same secret mission will be to get into the dark kitchen with a bottle of refreshing. Here are a few ways that even will not turn your eyes to the eyepiece night vision device, but will easily navigate in a relatively dark room.
The retina has two types of photoreceptors - rods and cones. We are interested in the so-called rod (rod cells), named for the type of cylindrical shape. They convert light stimuli into nerve stimulation. Sensitivity is achieved due to the presence of rods rhodopsin pigment.
Before you go into a dark room, try to wear glasses with a red tint. Sticks ignore this light color, so in the dark eyes adjust quickly. These glasses, for example, are the pilots before a night flight.
The bright light
The pupil narrows and expands depending on the light entering the eye. Brighter light - is the pupil. he in a dark room, by contrast, will be expanded to cover all possible light. Therefore, try to avoid bright light before go to a dark room - his eyes adapted quickly.
In general, it is best to just give your eyes adapt to the darkness of their own. Half an hour in a completely dark room will be enough to the organs of sight as much as possible adapted to the subsequent load. Oddly enough, but it is effective even pirate bandage: one block off the eyes from the light for 20 minutes, and in a dark room, remove the bandage - the difference is immediately apparent.
Eyes focused on a specific subject in a dark room - not a good idea. The fact that peripheral vision includes working more and more sticks: focusing on an object lying on the side, you will after some time begin to better see his movement and form.
Anyone can develop the ability to navigate by sound. This system, called "snap sonar", has been designed specifically for blind people. Its effect is similar to sonar, which is used bats. sonar principle is quite simple: the clicking sounds of the language are reflected from the surface of objects and allow some to "see" their shape.
Food can actively affect our ability to see in the dark. Bilberry improves the condition of the retina, vitamin A is used by physicians for the treatment of so-called "chicken", or night blindness. The easiest way is to get him out of the vitamins - however, fit and a diet rich in carrots, broccoli, pumpkin, fish and liver.
98% of the surface of our eyeball is water. Dehydration leads to dry eye that prevent us from seeing in the dark. Try to maintain the water balance in the conventional level of 2 liters per day per adult.