The brain is the most complex and least studied human organ. We do not know much about him, but we have some information about his work.
1. Nerve impulses move at a speed of 270 km / h.
2. The brain requires the same amount of energy to operate as a 10-watt light bulb.
3. Our brain is capable of processing over 100 trillion operations in one second.
4. The brain uses 20% of all oxygen that enters the bloodstream.
5. The brain is much more active at night than during the day.
6. Scientists say that the higher the IQ level, the more often people dream.
7. Neurons continue to grow throughout a person's life.
8. Information passes through different neurons at different speeds.
9. The brain itself does not feel pain.
10. The brain is 80% water.
Hair and nails
The subject of eternal ladies' concern. However, men are increasingly beginning to take care of them too.
11. Facial hair grows faster than anywhere else.
12. Every day a person loses an average of 60 to 100 hairs.
13. The diameter of a woman's hair is half that of a man's.
14. A human hair can support a weight of 100 g.
15. The nail on the middle finger grows faster than the rest.
16. There is as much hair on a square centimeter of a human body as on a square centimeter of a chimpanzee's body.
17. Blondes have more hair.
18. Fingernails grow about 4 times faster than toenails.
19. The average lifespan of a human hair is 3-7 years.
20. You need to be at least half bald for this to become noticeable.
21. Human hair is practically indestructible.
Internal organs
We don’t think about the internal organs until they bother us, but it is thanks to them that we can eat, breathe, walk and so on.
22. The largest internal organ is the small intestine.
23. The human heart creates pressure, which is enough for blood to spray seven and a half meters forward.
24. The acid in the stomach can dissolve razor blades.
25. The length of all blood vessels in the human body is about 96,000 km.
26. The stomach is completely renewed every 3-4 days.
27. The surface area of a person's lungs is equal to the area of a tennis court.
28. A woman's heart beats faster than a man's.
29. Scientists say the liver has over 500 functions.
30. The aorta has a diameter nearly equal to that of a garden hose.
31. The left lung is smaller than the right - so that there is room for the heart.
32. You can remove most of the internal organs and move on.
33. The adrenal glands change size throughout a person's life.
Body work
We don't really like talking about her. Here are some facts about not the most pleasant things about our body.
34. The sneezing speed is 160 km / h.
35. The coughing speed can even reach 900 km / h.
36. Women blink twice as often as men.
37. A full bladder is about the size of a softball.
38. About 75% of human waste products consist of water.
39. There are approximately 500,000 sweat glands on the legs, which can produce up to a liter of sweat per day!
40. Throughout his life, a person produces so much saliva that it can fill a couple of pools.
41. The average person releases gases 14 times a day.
42. Earwax is essential for ear health.
Sex and procreation
Sex is in many ways a taboo, but a very important part of human life and relationships. Procreation is equally important. You may not have known a few things about them.
43. Every single day in the world there are 120 million sexual acts.
44. The largest human cell is an egg, and the smallest is a sperm.
45. During the first trimester of pregnancy, women most often dream of frogs, worms and plants.
46. Teeth begin to grow six months before birth.
47. Almost all babies are born with blue eyes.
48. Children are strong as bulls.
49. One in 2,000 children is born with a tooth.
50. The fetus acquires fingerprints at the age of three months.
51. Each person for half an hour of his life was one single cell.
52. Most men have an erection every hour or every hour and a half during sleep: after all, the brain is much more active at night.
The senses
We perceive the world with the help of our senses. Here are some interesting facts about them.
53. After a hearty dinner, we hear worse.
54. Only one third of all people have one hundred percent vision.
55. If saliva cannot dissolve something, you will not taste it.
56. From birth, women have a better sense of smell than men (this confirms the idea of a more developed intuition in women - vg_saveliev).
57. The nose remembers 50,000 different scents.
58. Pupils dilate even due to slight interference.
59. All people have their own unique smell.
Aging and death
We age throughout our lives - that's how it works.
60. The mass of the ashes of a cremated person can reach 4 kg.
61. By the age of sixty, most people have lost about half of their taste buds.
62. Eyes are the same size all life, but nose and ears grow all life.
63. At 60, 60% of men and 40% of women will snore.
64. The head of a child makes up a quarter of its height, and by the age of 25, the length of the head is only one-eighth of the entire length of the body.
Diseases and injuries
We are all sick and injured. And this is also quite interesting!
65. Most often, heart attacks occur on Monday.
66. People can go much longer without food than without sleep.
67. When you burn out in the sun, it damages your blood vessels.
68.90% of illness is due to stress.
69. The human head remains conscious for 15-20 seconds after being chopped off.
Muscles and bones
Muscles and bones are the skeleton of our body, thanks to them we move and even just lie down.
70. You contract 17 muscles to smile and 43 to frown. If you don't want to strain your face, smile. Anyone who often and for a long time walks with a sour expression, knows how hard it is.
71. Children are born with 300 bones, while adults have only 206.
72. In the morning we are one centimeter taller than in the evening.
73. The strongest muscle in the human body is the tongue.
74. The heaviest bone in the human body is the jaw.
75. To take a step, you use 200 muscles.
76. The tooth is the only organ incapable of regeneration.
77. Muscles shrink twice as slow as they inflate.
78. Some bones are stronger than steel.
79. The feet contain a quarter of all the bones of the human body.
At the cellular level
There are some things that you cannot see with the naked eye.
80. There are 16,000 bacteria per square centimeter of the body.
81. Every 27 days, you literally change your skin.
82. Every minute 3,000,000 cells die in the human body.
83. People lose about 600,000 skin particles every hour.
84. Every day, the body of an adult produces 300 billion new cells.
85. All tongue prints are unique.
86. There is enough iron in the body to make a 6 cm nail out of it.
87. The most common blood type in the world is the first.
88. The lips are red because there are many capillaries under the skin.
Some more interesting facts
89. The colder it is in the room where you sleep, the more likely you are to have a nightmare.
90. Tears and mucus contain the enzyme lysozyme, which destroys the cell walls of many bacteria.
91. In half an hour, the body releases as much energy as it takes to boil one and a half liters of water.
92. Ears produce more earwax when you are afraid.
93. You cannot tickle yourself.
94. The distance between your arms outstretched to the sides is your height.
95. Man is the only animal that cries because of emotions.
96. Right-handers live on average nine years longer than left-handers.
97. Women burn fat more slowly than men - about 50 calories per day.
98. The fossa between the nose and the lip is called the nasal groove.
99. The feeling of fatigue appears at loads of 35-65% of the absolute possibilities.
100. The activity of the cardiovascular system is maximum by 18 hours, minimum at 3-4 hours.
101. The biological qualities of the offspring increase from the 1st to the 4th child, then they fall.
102. The composition of blood plasma is reminiscent of the composition of water in prehistoric pramoria, in which life originated.
103. In one contraction, the heart pumps 200 ml of blood.
104. Full circulation of the blood of an adult is completed in 20-28 seconds, in a child - in 15 seconds, in a teenager - in 18 seconds.
105. The strongest muscle in the human body is the tongue, not the heart. The heart is the most resilient muscle.
106. The total length of hair on the head, grown on average by a person during his life, is 725 kilometers.
107. A person who smokes a pack of cigarettes a day drinks half a cup of tar a year.
108. Tooth enamel can be compared to quartz. It is known that even the point of a saber dulls when hitting the enamel.
Hundreds of blogs and websites are opening and closing in Russia every day, most of which are for educational purposes. But really informative and interesting, and the most important useful resources only a few become.
The portal site offers a selection of 10 of the most popular, interesting and informative sites in Russia, which millions of readers of the country are hooked on. What were the criteria for choosing:
- quality content
- lack of advertising (or minimized)
- convenience and simplicity of the site
- design
- layout
- uniqueness
Adme is a site about life, freedom and creativity.
The project has existed for over 10 years and has gained insane popularity over the years. The secret of the project's success is simple - unique cognitive content every day. The absence of politics, evil news feeds and obtrusive advertising, an abundance of light humor, useful posts about the life and work of great people, and a lot of everything and everything that makes a person happy, kind, smiling ... In general, created by people and for people.
Lifehacker is no less successful and useful project than adme, with a whole army of fans and fans in Russia. From a popular blog giving advice, the life hacker has grown into a successful project with over 6 million readers a month.
The secret of success is content relevance. Simply put, for example, the article "How to download a video from Youtube" was published in 2012, and it still hasn't lost its relevance. Every month, more than 70,000 Internet users ask themselves the question “how can you still download a video from YouTube” and in the search engines of Yandex and Google, an article from Lifehacker appears for this request. The result is that it has gained 1.7 million views since 2012!
The main directions are articles about health and sports, how to use gadgets, websites and new technologies, and much more ... A very useful resource in Russia.
The first association among the majority of users, I am sure, is physical instructor Thomas performed by Dmitry Nagiyev. However, the Foma website is a successful Orthodox magazine for the doubters. The magazine is entirely devoted to the Orthodox faith and the Church.
A lot of useful material in a cool format. Convenient layout and ease of navigation of the site, as well as high-quality, easy-to-read material distinguishes the resource from most other religious portals. There is an opinion that industry-specific and highly specialized sites are doomed to failure, but in Orthodox Russia "Foma" is just gaining its popularity, because the number of believers in Russia has increased in recent years (based on statistical data).
One of the most popular sites in Russia, the main topic of which is psychology in all its manifestations.
Like most glossy magazines, Psychologies goes online and in a few years turns into a major international project. Originally from France, the project is rapidly gaining popularity in Europe and already in 2005 it begins to be published in Russia. Online audience of the site is estimated at millions. Feelings, interests, desires and thoughts, relationships with oneself and other people, the experience of contemporaries and the expert opinion of the best psychologists and psychotherapists; new sources of joy and energy, opportunities to realize oneself and change for the better, ways to take care of one's health and beauty with pleasure - all these are Psychologies.ru topics.
A non-profit educational project dedicated to the humanities has grown over time into an online university, with real courses and lectures. A distinctive feature from all other projects - all courses and lectures are absolutely free. The main topics of the site are history, literature, art, anthropology, philosophy. Arzamas consists entirely of courses, each of which is dedicated to a specific topic. A new course is published every two weeks on Thursdays. Each course consists of several 15-minute video lectures (episodes), as well as a variety of materials - articles, photo galleries, maps, dictionaries, tests, games, etc. Thanks to the successful layout of the site, cool content and the absence of intrusive ads, Arzamas magazine entered very quickly in the ranking of the most popular cognitive resources in Russia.
It is noteworthy that Arzamas, as a literary society, as a circle was first opened in 1815, and members of "Arzamas" were such famous people as V. A. Zhukovsky, P. A. Vyazemsky, A. A. Pleshcheev, A. S . Pushkin ...
Naked Science (translated from English. "From the point of view of science") is a Russian popular science journal, published since 2013 in Russian. Main topics: science, aviation, new technologies, future technologies, space, cars, photography, psychology. The main task of the popular science Internet portal is to popularize science.
Thanks to the successful layout and design, the site very quickly bypassed all its competitors. And the approach to submitting materials - “to tell about complex things in an accessible, simple and understandable way” has become the unspoken motto of the project. Be sure to visit the video section of the site - well, there are a lot of educational video materials.
vc.ru is a magazine about internet business, startups, innovation and online marketing. Today it is the largest platform for entrepreneurs on the Russian Internet. The site daily covers business news, expresses the opinions of experts, publishes reviews and analytics ...
Like all previous portals, it differs from most of its competitors in its convenient layout and uncomplicated design, which makes the resource very attractive against the background of all the others. In my opinion, it is one of the "strongest" and most powerful cognitive resources for entrepreneurs and startups.
The Village is on this list for a reason. A useful and informative portal with an awesome design and high-quality content, as an example for everyone - "how to make successful projects." The portal is dedicated to the life of the megalopolises of Russia, tells about cultural and social life, entertainment, services, food and people in Moscow, St. Petersburg and other megalopolises. On the pages of The Village, interviews with officials harmoniously coexist with reviews of cafes or bars. The project also has “two little brothers” - Wonderzine magazine for young, energetic and free-thinking women and FURFUR youth magazine. Definitely, these are the sites worth visiting.
Another very interesting resource on which I periodically hang up. Newtonew is an educational magazine about education. It will be useful and interesting for schoolchildren and students, teachers, parents and all those who love and want to engage in self-education. The project, as an educational resource, has suspiciously many advantages - high-quality and interesting material, convenient layout and cool design, lack of advertising and “imposed opinions dictated from above”. The combination of all of the above, as a little meticulous person, makes me think - at the expense of what the project lives and flourishes, where does the source of funding come from. I would like to believe that the project is independent. For convenience, I will single out the section of the site - "Thematic selections" - very convenient. Again, I repeat, a vivid example of the fact that the project was made by people and for people. Solid five to the authors of the project!
- Everything about sports and a healthy lifestyle -
Today, healthy lifestyles and sports are talked about everywhere. One of the most powerful sources of encyclopedic knowledge on the web is the well-known SPORTSWIKI knowledge laboratory. Thousands of interesting, useful materials are collected here. There is no need to talk about the design of the site, but the exclusivity of the sports encyclopedia is different ...
MEN'S HEALTH - I used to read it regularly, now - less often, but as an educational magazine with a set and arsenal of "useful things" I cannot but recommend it. MEN'S HEALTH is more of a male portal. Main topics: men's health and fitness; workout, exercise and fitness encyclopedia; sex and psychology of relationships; proper nutrition and disease prevention; food and recipes ... Great layout and design, thousands of useful materials.
I also want to highlight some of the most useful educational video blogs. All of them are time-tested, the authors of which are not nonsense, they are well versed in the anatomical processes of the body, dietetics, metabolism ...
Unfortunately, today on YouTube there are many videos on sports topics, where there is more harm than good. Sometimes it is scary to listen to the nonsense of their creators, because these people are giving out advice with might and main, teaching and urging to follow their methodology. And we are talking about the human body, about a body that can be very easily injured thanks to the advice of certain pseudo-certified coaches. This delicate and scrupulous topic can only be discussed by people who specialize in various sports fields. Such, as I have found out over the years, are very few.
So, there are video blogs dedicated to sports and a healthy lifestyle that I would recommend without a shadow of a doubt.
Russian TV presenter, author of sports bestsellers "Fitness is easy!" and “Fitness. Life Guide "Denis Semenikhin is a guru in the world of fitness and a healthy lifestyle. The most visited sports video blog in Russia, and most importantly, one of the most informative.
Sergey Badyuk's video blog is no less informative. A very authoritative and wise guy. Reasoning sensibly, speaks convincingly and to the point. Interviews with Badyuk are always interesting and informative. Interests - hand-to-hand sports, boxing, "iron", yoga, powerlifting, workout, qigong ...
One of the most informative channels about martial arts, martial arts, self-defense ... Release formats - sharp interviews with masters of different martial arts, useful and funny video lessons ... There is a lot of informative material. Issues are published twice a week.
More than a million subscribers, informative video content, but I used to like the channel more. Nevertheless, there is a lot of useful material - I also recommend it.
One of the most informative and interesting boxing channels in Russia. A sense of humor, combined with professional advice and master classes from Bigaev Alik, made the channel bright and rich, and most importantly, useful. Channel chip in the duration of videos. They are all short and informative. The material feed is easy and affordable. These are not just boxing videos - this is a small show. A special character on the channel - Alexander Yurievich - is another feature of the channel. I recommend to everyone.
Yoga Journal is the leading yoga and healthy lifestyle website in Russia. The portal provides readers with access to thousands of articles on yoga, philosophy, health and nutrition, yoga complexes, meditations, video tutorials, interviews with famous masters ... Daily news is published on the site, from which you can learn all the most relevant from the world of yoga.
From the video channels on yoga, I can highlight: Unagrande YogaClub and daYoga.ru- professionally, efficiently, accessible and very informative.
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Physics and mathematics are very interesting sciences. This especially applies to physics, because it studies the world around us, which is still full of mysteries and secrets. Learning these secrets and learning all the new facts about the world around us is very interesting. This section contains various scientific interesting facts that will help make sure that science is especially entertaining, fall in love with physics and mathematics, and also distract and unwind during laborious and boring preparation for exams. Here, complex scientific theories are presented in simple language, understandable even for schoolchildren.
- Myths and reality
Many people do not even suspect that there are many objects and things around us that have amazing properties. In this article, we will discuss the hardness of some materials and the interesting results that can be obtained from these properties.
- Useful facts
As you know, the speed of light is, though large, but still a finite value. There are quite material objects (for example, photons - the particles that make up light) that move at the speed of light. How does the world “look” through the “eyes” of such fast objects?
- Useful facts
Through the efforts of various media outlets, as well as fiction and science fiction, black holes have acquired the image of very dangerous space objects that supposedly absorb everything in their path and can suddenly swallow the Earth. Let's figure it out if this is so?
A person is able to use a two-dimensional picture to form a very complete idea of the distances to the depicted objects, their shape and size, and thus fully perceive the three-dimensional world in all its depth. How do we achieve this?
- Just about complicated
The material in this article will acquaint the reader with the basic concepts of genetics, and with the interesting properties of the human genome. Genetics is the science of the laws of heredity and variability. Depending on the object of research, the genetics of plants, animals, microorganisms, humans, and so on are classified.
- Myths and reality
Nowadays, you can often meet with the opinion that the human brain supposedly works at only 10% of all its capabilities. On the basis of such a statement, the plot of some popular films is even built. Let's try to figure out whether each of us can suddenly become ten times smarter, or is this a myth, and if so, where did it come from?
You may have read a lot of interesting things, but there will probably be something else that can surprise you. This article contains 30 interesting and reliable facts from biology, history, geography, physics and other sciences that will definitely not leave you indifferent.
- Just about complicated
This article will briefly discuss some of the flaws in the theory of evolution based only on natural selection. By the way, evolution is a natural process of development of living nature, accompanied by a change in the genetic composition of populations, the formation of adaptations, speciation and extinction of species, the transformation of ecosystems and the biosphere as a whole.
- Just about complicated
This article lists and describes some of the factors that directly or indirectly influenced or continue to influence the emergence and maintenance of life on our planet. There are so many of these factors that sometimes, their entire combination ceases to seem random.
Newborns usually have about 270 bones, most of which are very small. This makes the skeleton more flexible and helps the baby pass through the birth canal and grow quickly. Many of these bones grow together as they grow older. An adult skeleton has an average of 200-213 bones.
2. The Eiffel Tower grows 15 centimeters in summer
The huge structure is built with temperature compensators, thanks to which the steel can expand and contract without any damage.
As the steel heats up, it begins to expand and takes up more volume. This is called thermal expansion. Conversely, a drop in temperature leads to a decrease in volume. For this reason, large structures such as bridges are built with expansion joints that allow them to change in size without damage.
3.20% oxygen is generated in the Amazon rainforest
Flickr.com/thiagomarraThe Amazon rainforest covers 5.5 million square kilometers. The Amazonian jungle produces a significant portion of the oxygen on Earth by absorbing huge amounts of carbon dioxide, which is why they are often called the lungs of the planet.
4. Some metals are so reactive that they explode even on contact with water
Some metals and compounds - potassium, sodium, lithium, rubidium and cesium - exhibit increased chemical activity, so they can catch fire with lightning speed on contact with air, and if they are immersed in water, even explode.
5. A teaspoon of a neutron star will weigh 6 billion tons
Neutron stars are the remnants of massive stars, consisting mainly of a neutron core covered with a relatively thin (about 1 km) crust of matter in the form of heavy atomic nuclei and electrons. The nuclei of stars that died in a supernova explosion were compressed under the influence of gravity. This is how superdense neutron stars were formed. Astronomers have found that the mass of neutron stars can be comparable to the mass of the Sun, while their radius does not exceed 10–20 kilometers.
6. Every year Hawaii approaches Alaska by 7.5 cm
The earth's crust consists of several huge parts - tectonic plates. These plates are constantly moving with the top layer of the mantle. Hawaii is located in the middle of the Pacific Plate, which slowly drifts northwestward toward the North American Plate, on which Alaska is located. Tectonic plates move at the same speed as human nails grow.
7. In 2.3 Billion Years, Earth Will Be Too Hot for Life
Our planet will eventually become an endless desert, similar to today's Mars. For hundreds of millions of years, the Sun has been heating up, getting brighter and hotter and will continue to do so. In more than two billion years from now, temperatures will be so high that the oceans that make the Earth habitable will evaporate. The entire planet will turn into an endless desert. As scientists predict, in the next few billion years, the Sun will turn into a red giant and completely swallow the Earth - the planet will definitely come to an end.
Flickr.com/andy999 Thermal imagers are able to identify an object by the heat it emits. And polar bears are experts at keeping warm. Thanks to a thick layer of subcutaneous fat and a warm fur coat, bears are able to endure even the coldest days in the Arctic.
9. Light will take 8 minutes 19 seconds to get from the Sun to the Earth
It is known that the speed of light is 300,000 kilometers per second. But even at such a dizzying speed, it will take time to cover the distance between the Sun and Earth. And 8 minutes is not so much on a cosmic scale. Sunlight takes 5.5 hours to reach Pluto.
10. If you remove all interatomic space, humanity will fit in a sugar cube
In fact, more than 99.9999% of an atom is empty space. An atom consists of a tiny, dense nucleus surrounded by a cloud of electrons, which proportionally take up more space. This is because electrons move in waves. They can exist only where the crests and troughs of waves fold in a certain way. The electrons do not stay at one point, their location can be anywhere within the orbit. And therefore they take up a lot of space.
11. Stomach juice can dissolve razor blades
The stomach digests food thanks to caustic hydrochloric acid with a high pH (hydrogen index) - from two to three. But at the same time, acid also affects the gastric mucosa, which, however, is able to quickly recover. Your stomach lining is completely renewed every four days.
Scientists have many versions of why this is happening. Most likely: because of the huge asteroids that influenced its course in the past, or because of the strong circulation of air currents in the upper atmosphere.
13. A flea can accelerate faster than a space shuttle
Jumping fleas reach mind-boggling heights - 8 centimeters per millisecond. Each jump gives the flea an acceleration that is 50 times the acceleration of the spacecraft.
What interesting facts do you know?