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Today we want to share with you 15 facts about our eyes. You are ready?! Then let's go :-)
Everyone understands how important our five senses are. Most consider the most important sight for us. Below we give interesting facts about the eyes.
All healthy people have almost the same diameter of the eyeball, equal to 24 mm. The weight of the human eye is about 7 g.
Vitamin A contained in carrots is very important for human health. Since childhood, we hear calls to eat carrots in order to have good eyesight. In fact, there is no direct relationship between eating carrots and visual acuity. The beginning of such a faith is connected with the Second World War. British engineers have developed a radar that provides detection of German aircraft at night. To conceal this secret technology, the British air force began to publish in the press that the ability to see enemy aircraft at night was achieved by pilots using a carrot diet.
At birth, all children have a gray-blue eye color, and only after 2 years the child's eyes acquire a real color.
The most rare eye color in humans is green. It has only 2% of the population.
People with blue eyes can be recognized as relatives. Eye color depends on the amount of melanin in the iris. And melanin production is reduced in carriers of the HERC2 gene that has undergone a specific mutation. Scientists believe that this mutation began in the northwestern part of the Black Sea coast 6-10 thousand years ago. Now there is the city of Odessa.
The color of the iris of the right and left eyes is different in 1% of people.
You can independently pass the simplest test for visual acuity. It is necessary to find the Big Dipper in the night sky. Look at the handle of the bucket, and if there, not far from the middle star, clearly see a small asterisk, then you have normal visual acuity. This method of checking the vision used by the ancient Arabs.
It is theoretically possible for a human eye to distinguish 10 million different colors and approximately 500 shades of gray. In practice, a very good result is the ability to distinguish between about 150 colors (but this will require long training).
Since the drawing of the iris of the human eye is individual, then it is possible to identify the person.
The most light-eyed Europeans are the peoples of the Baltic, Sweden, Finland and northern Poland. The largest number of dark-eyed people live in Portugal and Turkey.
A person cries comparatively rarely, but at the same time his tears stand out constantly. They wet their eyes. According to statistics, women cry on average 47 times a year, and men - 7. Most often, crying occurs in the interval 18.00-20.00, this happens at home in 77% of cases, and in solitude people cry in 40% of cases. The person who cried feels better in 88% of cases.
On average, the human eye blinks 15 times per minute (every 4 seconds), it takes 0.5 seconds to blink. Accordingly, the blinking process takes 25 minutes in 12 hours of human life.
Women blink almost 2 times more often than men.
The man has 150 eyelashes on the lower and upper eyelids.
It is impossible to sneeze with open eyes.
By the way, we are pleased to inform you that the article "Interesting facts about Harry Potter" will be released on April 03, 2019 - wait, very soon :-)