Did you know that most of us at school were told erroneous information?
How so? Science does not stand still, and every day there are some discoveries. Now you have the opportunity to catch up and share useful knowledge with your children.
1. Chameleons change the color of their skin in order to disguise themselves.
The real reason why they do so is that in this way these reptiles show their mood and control the body temperature. Not bad, right? As you can guess, dark colors attract light, and therefore a clever chameleon, in order to cool his body, decides to try on some bright shades. If we talk about emotions, then the darker the chameleosha, the more he is frightened, and the brighter, the more he becomes nervous.
2. Vincent van Gogh cut off his ear.
What do we know about this Dutch artist? Yes, he created amazing Post-Impressionist paintings, but he managed to cut off his ear lobe. But historians claim that this happened during a quarrel with a French painter and friend of Vincent, Paul Gauguin, who was also an excellent swordsman. Here it is with his sword and deprived the creator of "Sunflowers" ear lobe.
3. Dog teeth are cleaner than humans.
Of course, it is possible for some dogs to clean their teeth twice a day, but most never saw a toothbrush. This indicates that their teeth are not cleaner than ours. Agree that it is almost impossible to find people who would eat garbage, and even lick their own pot.
4. Bats do not see anything.
Big bats are able to see three times more than an ordinary person.
5. Pluto is not a planet.
Initially, Pluto was said to be an ordinary planet. But in 2006 he was offended and deprived of the title of the planet, because he does not have the necessary parameters that meet the requirements of the IAU. As a result, astronomers created a new class - "dwarf planet" and awarded them the offended Pluto.
6. A goldfish has a three-second memory.
Studies prove that fish are as smart as birds and mammals. They are able to memorize a lot and store it in their memory for three to five months. So do not offend your aquarium pets, otherwise they will take revenge for six months. However, then they will forget about everything.
7. Isaac Newton discovered the law of universal gravitation after an apple fell on his head.
You have probably heard repeatedly that a great scientist discovered this law at the time he was sitting under the apple tree. Undoubtedly, there is some truth in this. Apple, let's say, took part in the scientific discovery, but Newton did not come to a brilliant conclusion after an arrogant fruit, supposedly, decided to fall directly on the head of a talented person. When the scientist was walking in the apple orchard, when he saw the fruit falling from the tree, it suddenly dawned on him: the motion of the planets in its orbits must obey the same law.
8. The blood in the veins is blue.
And let on hands you see blue, green veins, know (well, who else is assured, that the blood all the same blue), that she red. The fact is that the blood flowing through the veins contains a certain amount of carbon dioxide, which when mixed with other components, stains it in a dark color. Since the skin and veins of the veins add some distortion, in the end they seem to us a bluish or greenish hue.
9. Bulls annoying red color.
They are irritated not by a red rag, but by the fact that you are waving something in front of their face. Do not believe me? Take a cloth, for example, yellow, wave before the bull and run away from the angry beast at the speed of light.
10. Camels accumulate water in their humps.
Yes, camels can do without water for seven days, but that does not mean that they take it from their own hump. I do not want to disappoint you, but the camel's hump is solid fat, not water. It is he who helps them for three weeks to be cheerful and energetic. But the kidneys and intestines of the camel do retain water reserves for some time.
11. Nails on hands even after death of the person continue to grow.
Nails can grow only when new cells are formed. Once the heart stops, the nerve cells die within 3-7 minutes. And the dead man's nails seem longer because the skin around his finger begins to cringe.
12. We are endowed with only five senses.
In fact, we have a lot, a lot. Here are some of them: proprioception (sensation of the position of body parts relative to each other), hunger, thirst, desire to take a bath and many others.
13. There is no attraction in space.
It will seem strange to you, but everywhere in space there is a small part of gravity. It is she who keeps the Moon and Earth in orbit.
14. Red, green and yellow are the primary colors.
Farewell, green. It turns out that you are not the main color. If at school we were told that the basis of the bases is red, green, yellow, then in fact the main colors of the pigment are purple, yellow and blue. But it was decided not to mention this color three for the reason that, according to modern science, it does not reflect the true color range.
15. The northern star is the brightest.
The northern star, also called Polar, is in fact the 46th in brightness. Although ... at the north pole it is the brightest, because this statement, perhaps, will be partially correct.
16. Lightning does not strike more than twice.
NASA scientists have proven that lightning can strike at two or more places. Moreover, it is possible that she will be in the same place twice.
17. Einstein was a poor student at school.
In fact, Albert Einstein received good marks, but the system of mechanical memorization, which reigned in the gymnasium, was not to his liking. Upon admission to the Zurich Polytechnic University, he did not fail the math exam, as many believe, but the first time he failed to pass the entrance examinations in botany and zoology.
18. Classical music makes you smarter.
You've probably heard about the "Mozart Effect"? He is not capable of making us genius in a split second. A recent study showed that the group tested listening to the classics helped in solving various spatial problems. True, this effect lasted no more than 15 minutes.
19. The Great Wall of China is visible from outer space.
At least in a low Earth orbit it can not be seen. On radar images, this landmark by color and texture merges with the surrounding nature.
20. Benjamin Franklin discovered atmospheric electricity during the launch of the snake.
Everyone knows that Uncle Ben studied the electrical nature of lightning. His experiments he put on a kite, launching it during a thunderstorm. At least, so it is written in many textbooks. Historians are skeptical about whether or not he thus discovered atmospheric electricity. The funny thing is that they do not give the right amount of arguments to their address, and therefore, believe it or not, decide for yourself.
21. Dogs can not distinguish colors.
Man's best friend is able to distinguish not only black and white color. Dogs can see all shades of blue and yellow, including a gray-brown palette.
22. It will take 7 years for the chewing gum to digest.
If you suddenly swallowed "Orbit", do not panic. The maximum amount of chewing gum can be in your stomach is a week. Whatever you eat, it will sooner or later come out. The exception is food products of large sizes, which are simply stuck in the stomach or intestines.
23. During the year during sleep we eat about 8 spiders.
First of all, remember that spiders do not care about us. Secondly, they are afraid of snoring, eternally tossing the sleeping. Of course, this does not mean that during sleep you will not swallow a spider, but certainly eight in a year will not eat.
24. We use only 10% of our brain.
It's not true, it's not true and it's not true again. Although ... this may be true in the event that we sleep, rest, in general, if there is no special mental activity. All the rest of the time when we use our cognitive abilities, most of us use our brain for 50%, or even more.
25. Thomas Edison did not invent the light bulb.
Before Edison dozens of geniuses tried to invent a light bulb, but only this great scientist patented his invention.
26. Seasons change depending on the proximity of our planet to the sun.
There is an opinion that summer arises precisely when the Earth is closest to the Sun, and winter, therefore, when it is farther. It is interesting that in fact the reason is not in distance. The earth's axis has a slight slope, and because the sun heats the surface of our planet differently.
27. Sleepwalkers should never be awakened.
A sudden awakening of sleepwalkers will not cause them a heart attack, and does not harm their health in any way. Moreover, they can unknowingly harm themselves, wandering through the rooms. So it's better if you wake them cautiously, than leave alone with your sleepwalking.
28. Christopher Columbus believed that the earth is flat.
In fact, the Italian navigator was not a fool. Even before he went on an expedition, he knew that our planet was round. By the way, 1,300 years before his first trip, it was known about this fact. But in the Middle Ages, many Europeans considered the Earth flat.
29. In the Northern Hemisphere, in the toilet, the water merges counter-clockwise, in the Southern hemisphere it is clockwise.
On the one hand, this is true for the reason that Coriolis force acts on the curling of water. On the other hand, it is not true, since it is too weak to somehow influence the direction of drainage in the aqueduct. There is a high probability that this is due to the design of the drainage system at home.
30. The head produces the greatest amount of heat.
The head and neck are only 10% of the total body area, so if you have a hat on, but no gloves, it does not mean that you will not catch cold. The amount of heat given off by any part of the body depends to a large extent on how much this part is bare.