10 common childhood misconceptions

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10 common childhood misconceptions
10 common childhood misconceptions
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10 common childhood misconceptions

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We learn many interesting and informative facts long before we go to school. And then, throughout life, our piggy bank is constantly replenished with indisputable facts. But are all the facts we know really true?

The highest mountain in the world - Everest

Each of us knows that the highest mountain in the world is Mount Everest. But is it really so? The height of Mount Chomolungma (the second name of Everest) is calculated relative to sea level. This mountain rises 8848 meters above sea level.

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It would be technically correct to calculate the distance from the bottom to the top. The Hawaiian mountain Mauna Kea, according to these indicators, conquers Everest. Most of the mountain (10,200 meters) is hidden under water. It rises 4206 meters above sea level.

It is also necessary to mention the well-known Mount Kilimanjaro, reaching a height of 5895 meters. Technically, it is lower than Everest, but Everest is surrounded by the Himalayas, which raise its platform by a quarter of an inch a year. Kilimanjaro grows from flat Tanzania, independently, without special helpers.

The only man-made object visible from space is the China Wall

Of course, the Great Wall of China is actually a gigantic structure. It stretches for hundreds of kilometers, so people assume that this object must simply be visible from space.

The Chinese Wall is often credited with mystical scientific facts. But the Great Wall of China is almost impossible to see from space.

This structure from a low Earth orbit can only be seen with the help of good lenses, but in this case there is a possibility of making a mistake and confusing the Great Wall with some other architectural structure.

At night, many man-made objects can be seen from space, as they are brightly illuminated.

The Great Wall of China will become clearly visible from space, if suddenly one day it acquires an absolutely incredible color, for example, pink.

Body heat dissipates mostly from the head

Wear a hat in winter, otherwise you risk catching a cold. Keep your head warm to prevent heat dissipation. But this age-old truth is just a grandmother's tale.

A person loses the same amount of heat per square inch in all parts of the body. This can be easily verified by trying to clear ice from the windshield with your naked body.

In order not to catch a cold on a winter day, you need all parts of the body to be equally covered from frost. A hat will not save you from illness if the rest of your body is exposed to adverse weather.

Before Columbus, people believed that the earth was flat

Ever since the days of the ancient Greeks, people believed that they lived on a huge ball. And for this they had a lot of obvious evidence, for example, that the ships went beyond the horizon.

It was only in the 1800s that there was talk again that our ancestors were such "dark people" that they simply took and forgot the form of the thing on which they live.

With regards to the famous departure of Christopher Columbus, then indeed, the navigator was overcome by fears. But he was most likely afraid that the ships would not reach their destination. Logistics, given the estimated size of the planetary ball, considered this scenario.

There were many objections to Columbus's plan to reach the East Indies by a new route, but the argument that Christopher's ships would tragically fall into the abyss from the edge of the earth was clearly not on this list.

The idea that Columbus went against the scientific community of the time, determined to prove that the earth has no edge, is only a beautiful story suitable for an adventure novel.

People have five senses

From biology lessons, we remember that a person has only five sources that capture information from the environment. We hear, we see, we touch, we enjoy smells and tastes.

But, for example, you hit your foot. And how do you feel? This is nociception - the ability to feel pain.

Everyone knows the "close your eyes and touch the tip of your nose" test. Your two body parts connect without visual information. This is a manifestation of proprioception. If you have problems passing this test, then proprioception has let you down.

There are other feelings as well - their lists are constantly changing and contested. There are some funny things the body does without you knowing it.

Feelings of hunger and thirst so often occurring can be regarded in the same way as feeling hot and cold. More often than not, the urge to scratch your back does not arise from touch or pain. There are many other senses - their lists are constantly changing and contested.

If you touch a chick, the mother will refuse it

What a pity for the poor chicks who have dropped out of their birthplace. But the biggest dilemma that confronts us is to save the baby, or not to touch him, since our touch will destroy the smell of the chick, and his mother will not accept the baby back into the nest. But if you think that the mother of the chick will abandon him because it was you who touched his feathers, then this is nonsense.

As a rule, chicks fall out of the nest in case of unsuccessful attempts to master heavenly flights. The parents of the negligent pilot are most likely nearby, in a nearby tree. If you leave the chick, his parents will soon return for him.

If you nevertheless decide to feed the poor inept, then you should not worry about this. The birds smell too weak and the chick's parents will not abandon their cub, smelling that it smells like a man.

Glass is a sedentary liquid

Probably, each of us saw crooked and uneven glass in old, abandoned buildings. And most likely, you have the thought that the glasses are flowing down, that the glasses are a slowly moving liquid.

But such fantasies could only come true in horror films.

A far less interesting explanation of why glasses are heterogeneous is the glass making process before the early 19th century. Then the window panes were made using the crown method. This production method was productive and not costly. The glass, heated to a certain temperature, exploded and unfolded into a sheet. But the glasses were not of the highest quality. This is how we got non-uniform, sometimes thick, corrugated glass.

Different parts of the tongue are responsible for different tastes

Some people sincerely believe that different segments of the language are oriented towards different tastes. The tip of the tongue is responsible for sweets, the sides for salty, the back for bitter, and the center for sour. This fact remained a delusion for many years.

People experience different tastes as the food moves across the tongue. There are exceptions, but most of them do not apply.

The 19th century French chef, August Escoffier, introduced a fifth basic taste in one of his dishes, which did not receive publicity, and it is called umami.

Gourmets have described the taste as tasty and meaty - but the scientists strictly adhered to the sweet / salty / bitter / sour taste tetrahedron.

Scientists still liked the "fifth taste".

A Japanese chemist, Kikune Ikeda, discovered that glutamic acid is responsible for the taste of umami. The discoverer himself called it a Japanese word, which in translation into Russian sounds "nyamka".

Until the end of the 20th century, the theory was not accepted, but now scientists know that Ikeda was right.

Human venous blood - blue

This misconception came from the distant past.

Aristocratic families believed that blue blood flowed in their veins. Since in people with a light skin tone, the veins have a bluish color, which is not observed in people with dark skin. But in reality, the aristocrats were mistaken.

Our body is permeated with blue venous rivulets. It is not surprising to suppose that the substance circulating in them also has such a shade.

But this is not the case. Our blood enters the lungs, where it is enriched with oxygen, after which it has a bright red hue. After circulating throughout the body, the blood takes on a deep red hue.

As a result, we get that our veins are blue only due to the play of light, and not in any way with the help of blue blood.

Chameleons change color depending on their surroundings

Every person at least once in his life dreamed of seeing a chameleon. The magical color changes of this lizard are polychromatic flashes. People naively believe that the color changes of chameleons depend on the environment. But this is another delusion. If the chameleon merges with the environment, then it simply demonstrates its natural color.

Only physical, physiological and emotional changes give the impetus for color change. Lizards change color using their chromatophores. Communication goals, light, temperature also play a big role in the transformation of a chameleon.

If the chameleon merges with the environment, then it is most likely showing its natural color.

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