There are some questions that we often ask ourselves, and we seem to have some rude answers, but I can't confirm their accuracy.
Brother V has prepared 13 daily questions that we have not yet found the exact answer to.
1. Why is it so difficult to fill the cup on the table with water?
This is thanks to the Coanda effect: when we pour liquid from the container, it tends to repeat the bending flow of its edges. If the liquid flows strongly, the jet detaches from the edges. However, reducing the flow can change its variation because you who are already running along the wall of the kettle and getting into the cup.
2) Why do we almost fall asleep in front of the TV, but when we go to bed within 5 minutes, the sleepiness disappears?
When the brain is busy watching TV, he doesn't need to analyze anything, the thought process is minimized, and with this monotonous sound background, you fall asleep. As soon as you turn off the TV, thoughts and stupid questions about life start to creep into your brain.
3) If all the body cells are constantly renewed, then why are scars and tattoos retained for life?
Some cells are constantly renewed, such as the epidermis. Stretch marks and scars, tattoos, affect the deep layers of the skin - the dermis layer, which will be much slower, but it will still happen. You may have noticed that the scars over the years have become less pronounced and the tattoos have paled slightly.
4. Will the fetus in the womb cause a waste of life? If so, where do they go?
As early as 2 months, the embryo produces urine, which is released into the amniotic fluid and "floats" in the amniotic fluid. He could even swallow this liquid, and there was nothing wrong with that. As for defecation, it usually occurs when the child has already been born.
5. What time do astronauts live on the International Space Station?
They use Universal Coordinated Time (UTC): this is the standard by which time zones and Greenwich Mean Time analogues are calculated. That said, you could say they were the same time as in the UK. In the early days of the space age, the use of UTC was equally convenient for the space powers of the Soviet Union and the United States.
6. How do electronic musicians and DJs host live concerts? Do they just click the play button?
Djs allow music to appear in real-time stages, just like any other musician, but he has more options: to combine the original music and others, or to slightly change the repertoire of other musicians to his own style.
7) Why does an animal drink water from rivers and puddles, and if someone does, he is likely to get sick?
Our immunity has struggled to cope with this test. Who says wild animals don't get sick? Their intestines are usually full of parasites, and they are usually affected by dirty water.
8) Why do we cry when we are sad? Are the tears in your eyes related to emotions? Why does it come out of the nose?
Curiously, the appearance of crying in our ancestors was a sign of help. Primitive man thus expressed heartache and resentment. In addition, good cries can play the role of breathing gymnastics and help cope with stress.
As for the snot when crying, it is only tears that fall from the eyes through the tear ducts into the nose.
9) Why is our brain programmed to love all the sweet things that make us fat?
Because our ancestor nature did not indulge in a sumptuous meal every day, and if a man had to choose between a pile of tops and fat meat, then he chose the second one. After all, the energy of such a dish is enough for a whole day. There is no shortage of food now, but habits have always existed.
10. Why can a person walk quietly for several kilometers, but it is uncomfortable to stand for 15 minutes?
Because in the veins of the legs we have valves filled with blood. If we walk, the contraction of the calf muscle pushes it out, and when we stand for a long time, blood accumulates in the valves and stretches them. So, while standing, try to move your legs so that they become less tense and relaxed.
11. If I take a bath with champagne, will I get drunk?
It is true that it will be drunk, but not because alcohol will be absorbed through the skin. Ethanol is a strongly volatile substance, and in a bathtub like this, you breathe its vapor, which is well absorbed by mucus alcohol.
12. Have anyone ever heard of heart cancer?
This happens, but rarely. As you know, cancer spreads through tissues and occurs because cells divide out of control. And cardiomyocytes - cells of myocardial tissue, will soon stop dividing. Therefore, cancer is usually missed in this area.
13. Why don't penguins' paws freeze?
The arteries and blood vessels in their legs are intertwined, and the warm blood of the arteries immediately warms the blood, making it cool in contact with ice. In this case, the surface temperature of the paws is still very low so that the penguin's feet do not melt the ice.