From early childhood, we get a lot of information, which often take a scientific fact, and never doubted his veracity. That’s just science is constantly evolving, scientists are using new methods of investigation and as a result some truths cease to be. Proposes to revise their knowledge and break established clichés.
Alcohol kills brain cells
By itself, alcohol does not kill anyone. Brain cells die from thiamine deficiency, as most of the calories coming together with alcohol, while the incorrigible drunkards nerve cells die from excitotoxicity caused by excessive amounts of neurotransmitters at the exit of the binge. So everything is good in moderation – and alcohol, and detoxification.
Lightning does not strike in the same place twice
Lightning strikes in the same place. Since the purpose of lightning – is to find the fastest way to the ground, the tall buildings, trees and other structures are considered high-risk sources. The higher, the better the chance that lightning will strike twice and not only.
The tongue has a special taste zones
There are no special language areas are responsible for the perception of bitter, sour, salty and sweet taste. By the way, there is also a fifth taste – umami perception of proteins. So, all areas of language can feel these flavors.
Murder from a height
Even if a coin to throw off the roof height Empire State Building, it will not kill anyone. The maximum speed of a body falling from a height of 80 km / h. It is not enough to deal a fatal blow, perhaps get shot.
In the veins of blue blood
Blood without oxygen running along the veins to the heart, it is not blue, in reality it is dark red. In school textbooks to portray such figures it for contrast. But the veins show through the skin appear blue because of the refraction of light.
Water fingers swell
After a long stay in the pool or bathtub fingers appear swollen, as if absorbed a lot of water. But in fact, it is due to vasoconstriction. Vessel walls are reduced, and the fingers are covered with wrinkles.
Sunflower turns to follow the sun
Sunflowers do not turn their heads towards the sun, they always point to the east. And here’s another netsvetuschie plants just follow the heavenly body, once and for all determine the correct direction.
To digest chewing gum takes seven years
As a child, all afraid that chewing gum in any case can not swallow on her digestion gone for many years. But this is not the case. It is generally not digested and do not dissolve, but simply passes through the gastrointestinal tract in the same way as the rest of the food.
Bats are blind
Bats are not blind. Most small species really basically use echolocation to navigate in space, but their eyes were in complete working order. But the major representatives on the contrary prefer to rely more on how al normal vision.
Bulls annoying red
Bulls react to the matador cape not because it is red. To them, it looks like one of the shades of gray. But waving them under the noses of the animals, very frustrating.
Dinosaurs became extinct because of the meteorite
Not all dinosaurs died because of the effects caused by the fall of the meteorite. Modern birds – are descendants of small theropods, who managed to survive.
Drunk alcohol dilates blood vessels, causing blood flow to the skin surface. In fact, the body further cooled due to the outflow of heat from the air in the vessel.
Seasons depend on the distance to the Sun.
Seasons do not depend on how close we are to the sun. They depend on the angle of inclination of the axis of the Earth, which is 23,5 °. When the Earth moves around the Sun during the year to it is drawn that the Northern Hemisphere, the Southern. At the hemisphere that faces the sun, the summer comes, as it receives 3 times more sunlight and heat.
Two liters of water per day
Eight glasses of water a day – is extremely subjective measure. The amount of water needed depends on many factors: the level of activity, body weight, environment, etc.
In the Middle Ages, people lived to an average of 30 years
Although life expectancy in the Middle Ages and was smaller, but there it was not so low, as is commonly believed. This is an average figure, which takes into account infant mortality, which at that time was incredibly high. Therefore, some modern methods take into account only the children who have reached the age of 12letnego.
Loading dose of vitamin C protects against colds
Orange juice, lemon tea or a handful of tablets of vitamin C does not help prevent colds, but will reduce the duration of illness, when suddenly she caught someone.
After the meal, you can not swim
It does not have to wait 30 minutes after eating to swim. Although the intensity of swimming and can cause cramping, most vacationers at sea can not be attributed to the Olympic reserve. Therefore, the myth of the increased rush of blood to the stomach for digestion time food that can cause cramps, you can forget. But alcohol and the sea – that’s another story.
If earthworm cut in half, then survive, not two, but only one part, one that with the mouth.
In humans, the five senses
Everyone is used to the classification, which came up with Aristotle, according to which a person has five senses: sight, hearing, touch, smell and taste. This is not true. Superheroes people can not be named, but now I feel there are about 20, including a sense of balance.