They are far from the truth.
Since childhood, for many there is a system of certain knowledge about the world. Some of the facts a child learns from parents or friends, others in school. One way or another, but many of the allegations that a coin dropped from the Empire State Building can kill a human or lightning does not strike twice in the same place, no doubt. But in fact most of these facts has nothing to do with reality and science.
1. Alcohol kills brain cells
In fact, not only the abuse of alcohol kills brain cells. They can also die from a deficiency of thiamine for those who receive most of their calories from alcohol. And in the case of very heavy drinkers, the brain cells die from the excitotoxicity (glut, neurotransmitters).
2. Lightning does not strike twice in the same place
Lightning can easily strike the same place twice. In especial danger are tall buildings and trees, because the higher the object, the more likely it will be amazed.
3. Language has different areas of taste
The language actually has no specific areas of the receptors to determine bitter, sour, salty and sweet tastes. Moreover, there is a fifth taste (“umami” – the savory / meaty flavors). All areas of the tongue can sense all tastes.
4. Penny dropped from the Empire State Building can kill someone
The coin, which fell from the height of the Empire State Building will not kill a person walking down the street. It will develop a maximum speed of 80 km/h and people get off the high of a bump on the head.
5. Chewing gum is digested 7 years
Saying the parents of each child in early childhood. In fact, it practically is not digested and exits the body at the same rate as the rest of the food.
6. The bulls went crazy with the red color
In fact, the bulls do not see red and perceive it as a shade of gray. They are annoyed that the Matador is waving at them with a cloak in front of his nose.
7. The impact of the asteroid destroyed all the dinosaurs
Not all dinosaurs died during the collision of Earth with an asteroid from the late Cretaceous period. Modern birds are descended from a small theropod dinosaur that somehow survived.
8. Alcohol warms the body
In fact, it is not so, and in any case can not be heated with alcohol in the cold. Alcohol dilates blood vessels, causing to the skin rushes the greater quantity of warm blood. The body temperature actually decreases due to heat transfer vessels near the skin and cold air.
9. In the middle ages life expectancy was 30 years
Although life expectancy in the middle ages was much lower, it was not 30 years. The average life expectancy was much higher, but very high infant mortality rate have reduced this figure. Some modern methods do not take into account when measuring the average period of human life of people who did not live up to 12 years.
10. Consuming vitamin C will not get sick
If you drink liters of orange juice or eat a huge dose of vitamin C, it will not protect against colds. However, this will help to reduce the duration of illness.
11. You cannot swim for 30 minutes after a meal
Although very intensive swimming lessons can lead to seizures, those who are not trained on the Olympic program, you can forget about the old fable that the increase in blood flow to the stomach can cause cramps in the water. Another thing that you should not swim after drinking alcohol.
12. People only use 10% of brain
Humans only use 10% of your brain is known to all. But and wrong. Although each time involved only a small number of neurons, the rest continue to perform certain functions.
13. If earthworm cut in half will grow two worm
Half of an earthworm will grow into two worms. The living will remain only the front part (with the mouth) and the other part will have nothing to eat.
14. The five senses
Scientists have now determined that a person has up to 20 senses. To them, for example, include thermocouple (temperature sense) and equilibrioception (sense of balance).
15. The great wall of China visible from the moon
The great wall is generally not visible from the moon. Moreover, it is not visible even from a low earth orbit where the international space station.
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