Interesting educational material. Informative and interesting facts about a person

Newborns usually have about 270 bones, most of which are very small. This makes the skeleton more flexible and helps the baby move through the birth canal and grow quickly. As we grow older, many of these bones fuse together. The skeleton of an adult consists of an average of 200-213 bones.

2. The Eiffel Tower grows 15 centimeters in summer

The huge structure is built with temperature expansion joints, thanks to which the steel can expand and contract without any damage.

When steel is heated, it begins to expand and takes up more volume. This is called thermal expansion. Conversely, a decrease 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 being damaged.

3. 20% of oxygen comes from the Amazon rainforest

Flickr.com/thiagomarra

The Amazon rainforest covers 5.5 million square kilometers. The Amazonian jungle generates a significant portion of the Earth's oxygen by absorbing great amount 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 - show increased chemical activity, therefore, they are able to catch fire with lightning speed upon contact with air, and if they are lowered into water, they can even explode.

5. A teaspoon of a neutron star would 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 cores of stars that died during a supernova explosion were compressed under the influence of gravity. This is how superdense neutron stars were formed. Astronomers have found that the mass neutron stars can be comparable to the mass of the Sun, despite the fact that their radius does not exceed 10–20 kilometers.

6. Each year, Hawaii moves closer to Alaska by 7.5 cm.

The earth's crust consists of several huge parts - tectonic plates. These plates are constantly moving along with the upper layer of the mantle. Hawaii is located in the middle part of the Pacific Plate, which is slowly drifting in a northwesterly direction towards 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 to exist.

Our planet will eventually become a vast 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 about two billion years or more, temperatures will become so hot that the oceans that make Earth habitable will evaporate. The whole 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 radiates. And polar bears are experts at keeping warm. Thanks to a thick layer of subcutaneous fat and a warm coat, bears are able to endure even the coldest days in the Arctic.

9. It takes light 8 minutes 19 seconds to travel from the sun to the earth.

It is known that the speed of light is 300,000 kilometers per second. But even with such dizzying speed, it will take time to overcome the distance between the Sun and the Earth. And 8 minutes is not so much on a cosmic scale. To reach Pluto sunlight it will take 5.5 hours.

10. If you remove all the 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 that proportionally occupy more space. This is because electrons move in waves. They can only exist where the crests and troughs of the waves add up in a certain way. The electrons do not stay at one point, their location can be anywhere within the orbit. That is why they take up a lot of space.

11. Gastric Juice Can Dissolve Razor Blades

The stomach digests food thanks to the caustic hydrochloric acid with a high pH (hydrogen index) - from two to three. But at the same time, the acid also affects the gastric mucosa, which, however, is able to quickly recover. The lining of your stomach is completely renewed every four days.

Scientists have many versions of why this happens. Most likely due to huge asteroids, which have affected its course in the past, or due to the strong circulation of air currents in upper layers atmosphere.

13. A flea can accelerate faster than a space shuttle.

Flea jumps reach breathtaking heights - 8 centimeters per millisecond. Each jump gives the flea an acceleration that is 50 times the acceleration of the spaceship.

And what Interesting Facts do you know?

Physics and mathematics are very interesting sciences. This is especially true for physics, because it studies the world around us, which is still full of mysteries and mysteries. To learn these secrets and learn all the new facts about the world around us is very entertaining. This section contains various scientific interesting facts that will help you to be convinced of the special amusing nature of science, to fall in love with physics and mathematics, and also to be distracted and unwind during the time-consuming and boring preparation for exams. Here complex scientific theories set out plain language understandable even to students.

• 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 come 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 of which light is composed), which 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, 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, shall we?

From a two-dimensional picture, a person is able to compose 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 complex

The material of 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 patterns of heredity and variation. Depending on the object of study, the genetics of plants, animals, microorganisms, humans, and so on are classified.

• Myths and reality

Nowadays, one 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 if each of us can really suddenly become ten times smarter, or is it a myth, and if so, where did it come from?

You may have read a lot of interesting things, but there is probably 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 complex

This article will briefly discuss some of the shortcomings in the theory of evolution based only on natural selection. By the way, evolution is a natural process of development of wildlife, 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 complex

This article lists and describes some of the factors that have 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.

The brain is the most complex and least understood 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 work as a 10-watt light bulb.
3. Our brain can process more than 100 trillion operations in one second.
4. The brain uses 20% of all oxygen that enters the circulatory system.
5. At night, the brain is much more active 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' anxiety. However, men are increasingly starting 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 women's hair is half that of men's.
14. A human hair can support a weight of 100g.
15. The nail on the middle finger grows faster than the others.
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 it to become noticeable.
21. Human hair is virtually indestructible.

Internal organs
We do not remember the internal organs until they disturb us, but it is thanks to them that we can eat, breathe, walk and all that.

22. The largest internal organ is the small intestine.
23. The human heart creates enough pressure to send blood spurting seven and a half meters forward.
24. Stomach acid 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 ​​human lungs is equal to the area of ​​a tennis court.
28. A woman's heart beats faster than a man's.
29. Scientists say that the liver has more than 500 functions.
30. The aorta has a diameter almost 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 live on.
33. The adrenal glands change size throughout human life.

Body work
We don't really like to talk about it. Here are some facts about not the most pleasant things that concern our body.

34. The speed of a sneeze is 160 km/h.
35. The speed of coughing 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. Approximately 75% of human life products consist of water.
39. There are approximately 500,000 sweat glands on the legs, they can produce up to a liter of sweat per day!
40. In a lifetime, a person produces so much saliva that it can fill a couple of pools.
41. On average, a person releases gases 14 times a day.
42. Earwax is essential for ear health.

Sex and procreation
Sex is largely taboo, but a very important part of human life and relationships. Procreation is no less 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 the egg, and the smallest is the 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 babies 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 a single cell.
52. For most men, an erection occurs every hour or every hour and a half during sleep: after all, at night the brain is much more active.

The senses
We perceive the world through the senses. Here are some interesting facts about them.

53. After a hearty meal, 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 small interference.
59. All people have their own unique smell.

Aging and death
We age throughout life - that's how it works.

60. The mass of ash 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. The eyes are the same size throughout life, but the nose and ears grow throughout life.
63. At 60, 60% of men and 40% of women will snore.
64. The head of a child is a quarter of his height, and by the age of 25, the length of the head is only an eighth of the entire length of the body.

Diseases and injuries
We all get sick and injured. And that's pretty interesting too!

65. Most heart attacks occur on Mondays.
66. People can go much longer without food than without sleep.
67. When you burn in the sun, it damages the blood vessels.
68. 90% of diseases are caused by stress.
69. The human head remains conscious for 15-20 seconds after being cut off.

Muscles and bones
Muscles and bones are the frame of our body, thanks to them we move and even just lie down.

70. You use 17 muscles to smile and 43 to frown. If you don't want to strain your face, smile. Anyone who walks around with a sour face often and for a long time knows how hard it is.
71. Children are born with 300 bones, while adults have only 206.
72. In the morning we are a centimeter higher 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 bone.
75. To take a step, you use 200 muscles.
76. Tooth is the only organ incapable of regeneration.
77. Muscles decrease twice as slowly as they pump up.
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 you can't 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 in human body 3,000,000 cells die.
83. People lose about 600,000 skin particles every hour.
84. Every day, the adult human body 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 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 can't tickle yourself.
94. The distance between arms outstretched to the sides - this is your height.
95. Man is the only animal that cries because of emotions.
96. Right-handers live an average of nine years longer than left-handers.
97. Women burn fat more slowly than men - about 50 calories a day.
98. The fossa between the nose and the lip has a name - the nasal groove.
99. A feeling of fatigue appears at loads of 35-65% of the absolute capacity.
100. The activity of the cardiovascular system is maximum by 18 o'clock, minimum at 3-4 o'clock.
101. The biological qualities of offspring increase from the 1st to the 4th child, then fall.
102. The composition of blood plasma is reminiscent of the composition of the water of prehistoric foreshores, in which life originated.
103. For one contraction, the heart pumps 200 ml of blood.
104. Complete 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 enduring 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 tip of a saber blunts when it hits the enamel.

Hundreds of blogs and websites open and close every day in Russia, most of which are educational. But really informative and interesting, and most importantly useful resources become only a few.

The portal site offers a selection of the 10 most popular, interesting and informative sites in Russia, which millions of readers of the country are hooked on. What criteria were used to select:

• quality content
• no ads (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 more than 10 years and over the years has gained crazy popularity. The secret of the project's success is simple - unique educational content every day. The absence of politics, malicious news feeds and intrusive advertising, an abundance of light humor, useful posts about the life and work of great people, and a lot of everything about everything that makes a person happy, kind, smiling ... In general, it was 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 advice blog, lifehacker has grown into a successful project with over 6 million readers a month.

The secret of success is the relevance of the content. Simply put, for example, the article "How to download videos from Youtube" was published in 2012, and has not lost its relevance until now. Every month, more than 70,000 users on the Internet ask themselves the question “how can you still download a video from YouTube” and in the search engines of Yandex and Google, an article by Lifehacker drops out for this request. The result - she has gained 1.7 million views since 2012!

The main directions are articles about health and sports, about how to use gadgets, websites and new technologies and much more ... Very useful resource in Russia.

The first association among most users, I’m sure, is the fizruk Foma, performed by Dmitry Nagiyev. However, the site "Thomas" is a successful Orthodox magazine for doubters. The magazine is entirely devoted to the Orthodox faith and the Church.

Lots of useful content in a great format. Convenient layout and ease of site navigation, as well as high-quality, easy-to-read material, distinguishes the resource from most other religious portals. There is an opinion that industry and highly specialized sites are doomed to failure, but in Orthodox Russia"Thomas" is just gaining its popularity, because the number of believers in Russia for last years(based on statistics) increased.

One of the most popular sites in Russia, the main theme of which is psychology in all its manifestations.

Like most glossy magazines, Psychologies goes online with its head and in a few years turns into the largest international project. Originally from France, the project is very quickly gaining popularity in Europe and already in 2005 it begins to be printed in Russia. The online audience of the site is in the 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 the topics of Psychologies.ru.

A non-profit educational project dedicated to the humanities eventually grew into an online university with real courses and lectures. A distinctive feature from all other projects is that all courses and lectures are absolutely free. The main subject of the site is history, literature, art, anthropology, philosophy. Arzamas consists entirely of courses, each of which is devoted 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 advertising, Arzamas magazine quickly entered in the rating of the most popular educational resources in Russia.

It is noteworthy that Arzamas, as a literary society, as a circle, was first opened in 1815, and the members of Arzamas were such famous people, like V. A. Zhukovsky, P. A. Vyazemsky, A. A. Pleshcheev, A. S. Pushkin ...

Naked Science (in translation 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 the popularization of science.

Thanks to the successful layout and design, the site quickly outperformed all its competitors. Yes, and the approach to the presentation of materials is “accessible, simple and understandable to talk about difficult things"became the unspoken motto of the project. Be sure to visit the video section of the site - well, there are a lot of informative video materials.

vc.ru is a magazine about internet business, startups, innovations and online marketing. Today it is the largest platform for entrepreneurs in Runet. The site daily covers business news, expresses expert opinions, 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 most “strong” and powerful educational resources for entrepreneurs and startups.

The Village got on this list for a reason. A useful and informative portal with an awesome design and quality content, as an example for everyone - "how to make successful projects." The portal is dedicated to the life of Russian megacities, tells about cultural and social life, entertainment, services, food and people in Moscow, St. Petersburg and other megacities. On the pages of The Village, interviews with officials harmoniously coexist with reviews of cafes or bars. The project also has "two little brothers" - a magazine for young, energetic and free-thinking women Wonderzine and a youth magazine FURFUR. Definitely, these are the sites that are worth visiting.

Another interesting resource that I occasionally hang out on. Newtonew is an educational educational magazine. 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 is like educational resource suspiciously many advantages - high-quality and interesting stuff, convenient layout and cool design, no advertising and "imposed opinions dictated from above". The combination of all of the above, as a slightly meticulous person, makes me think - due to what the project lives and flourishes, where does the source of funding come from. I want to believe that the project is independent. Among the amenities, I will single out the section of the site - "Thematic collections" - it is 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!

- All 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 Lab. 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 an arsenal of "usefulness" I cannot but recommend it. MEN'S HEALTH is more of a male portal. Main topics: men's health and fitness; workouts, exercises and fitness encyclopedia; sex and relationship psychology; proper nutrition and disease prevention; food and recipes… Excellent 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, dietology, metabolism ...

Unfortunately, today on YouTube there are a lot of videos on sports topics, where there is more harm than good. Sometimes it’s scary to listen to the nonsense of their creators, because these people give out advice with might and main, teach and urge to follow exactly their methodology. A we are talking about the human body, about the body, which can be very easily injured thanks to the advice of various pseudo-certified coaches. This delicate and scrupulous topic can only be discussed by people who specialize in certain sports areas. There are very few of them, as I have found out over the years.

So, video blogs dedicated to sports and a healthy lifestyle, which 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. Very authoritative and wise uncle. He speaks soundly, speaks persuasively and to the point. Interviews with Badyuk are always interesting and informative. Area of ​​interest - hand-to-hand sports, boxing, "iron", yoga, powerlifting, workout, qigong ...

One of the most informative channels about martial arts, martial arts, self-defense... The release formats are sharp interviews with masters of various martial arts, useful and funny video lessons... A lot of educational material. Issues come out twice a week.

Over a million subscribers, informative video content, but I used to like the channel better. 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 Alik Bigaev, made the channel bright and rich, and most importantly, useful. The feature of the channel is in the duration of the videos. All of them are short and informative. Material delivery is easy and affordable. It's not just boxing videos - it's a little show. A special character on the channel - Alexander Yuryevich - this is another feature of the channel. I recommend to everyone.

Yoga Journal is Russia's leading yoga and healthy lifestyle website. The portal provides readers with access to thousands of articles about yoga, philosophy, health and nutrition, yoga complexes, meditations, video tutorials, interviews with famous masters... News is published daily on the site, from which you can learn all the latest from the world of yoga.

From the video channels on yoga, I can highlight: Unagrande YogaClub and daYoga.ru- professional, high quality, affordable and very informative.

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