Science and life interesting facts. The most interesting facts in nature, science and technology

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

The Amazon rainforest covers 5.5 million square kilometers. The Amazonian jungle produces a significant portion of the Earth's oxygen by absorbing vast amounts of carbon dioxide, which is why they are often referred to as 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, therefore they can ignite 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 remnants 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 of 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.

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. It takes 5.5 hours for sunlight to reach Pluto.

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 that 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.

What interesting facts do you know?

Most of us are far from science and understand little about it, but does this prevent us from learning interesting scientific facts about the world that surrounds us? A lot of interesting, funny and surprising is hidden from our eyes.

Proven Scientific Facts

Miscellaneous scientific facts

Facts about people

A little about the world around

Space is waiting for us

• The length of a day on Mars is almost the same as on Earth, they are only 39 minutes longer.
• The most fast planet solar system is Jupiter. It needs only ten hours for a complete rotation around the axis.
• The galaxy we are in contains about 200-400 billion stars.
• At a decent distance spaceship can take a photo of a million square kilometers of our planet in just ten minutes. You can do the same with an airplane in four years.

Results

The concept of a scientific fact is quite broad, so this category of knowledge can include a lot of information from different fields of knowledge. To recognize a fact as such, it must not only be proved, but also verified. The problem with scientific fact is that very often these proofs are neglected and the product is presented in its raw form, but science will always be able to distinguish truth from lies.

Much of what we learn in school will never come in handy. Most of this large part we will never even remember. And yet, some crumbs of "useless" information will remain in memory. Paradoxically, it is thanks to them that we feel like educated people. The luxury of keeping in mind is not only vital important information, but also "information surplus" increases self-esteem and gives a sense of intellectual consistency.

And "unnecessary information" surprisingly turns out to be the most interesting. This interest can become a magic key for children from vast world science, which is often hidden behind boring formulas and incomprehensible definitions.

In this article, we have collected nine scientific facts, which can be used in the lessons of mathematics, physics, geography, chemistry and biology, to clearly show that science is not something abstract from real life but the situations we face every day.

Fact number 1. On average, an ordinary person travels a distance equal to three equators of the Earth in his life

The equator is approximately 40,075 km long. Multiplying this figure by three, we get 120,225 km. With an average life expectancy of 70 years, we get about 1717 km per year, which is a little more than five kilometers per day. Not so much, but it runs for life.

On the one side, practical application this information does not. On the other hand, it is much more interesting to measure the distance traveled not in meters, steps or calories, but in equators. And calculating the percentage of the length of the equator will draw attention not only to geography, but also to mathematics.

The following two facts may come in handy in mathematics lessons. Using the first, you can calculate the number of children in parallel or even in the entire school who were born on the same day.

Fact #2: If there are 23 random people in a room, there is over a 50% chance that two of them will have the same birthday.

And if you put together 75 people, then this probability reaches 99%. A 100% chance of a match can be in a group of 367 people. The probability of a match is determined by the number of pairs that can be made from all the people in the group. Since the order of people in pairs does not matter, the total number of such pairs is equal to the number of combinations of 23 by 2, that is, (23 × 22) / 2 = 253 pairs. Thus, the number of pairs exceeds the number of days in a year. The same formula calculates the probability of matches for any number of people. So you can estimate the number of children born on the same day in parallel or even in the entire school.

Fact number 3. The number of living organisms in a teaspoon of soil is greater than the entire population of our planet

One square centimeter of soil contains billions of bacteria, fungi, algae and other organisms. About 60 million bacteria live in just one gram of dry soil. nematodes, or roundworms(the most famous of which are roundworms and pinworms) in the same amount of soil is much less - only 10 thousand. A figure that is incommensurable with the human population, but no less unpleasant for that.

Practical application of the information: Wash your hands thoroughly after taking care of your indoor plants, as well as after work in the garden or garden. A zone of increased bacterial danger is a sandbox on any playground.

Fact #4: The average toilet seat is much cleaner than the average toothbrush

The bacteria on your teeth live at a density of about 10 million per square centimeter. The number of bacteria on the skin varies depending on the part of the body, but in any case it is much less than in the mouth.

But there are no bacteria on the skin of frogs at all. The reason for this is the mucus secreted by the frog and contains the strongest antibiotics. This is how frogs protect themselves from the aggressive bacterial environment of the swamps in which they live.

A person in this regard is much less adapted, so toothbrushes are advised to be changed every couple of months.

Fact number 5. In the evening, a person becomes 1% lower compared to his "day" height

Under the influence of loads, our joints tend to shrink. With a normal lifestyle, by the evening a person's height decreases by 1-2 cm, which is approximately 1%. The decrease is not permanent.

The maximum decrease in height occurs after weightlifting. Changes in growth can be three or more centimeters. This is due to the compaction of the vertebrae.

Fact #6: Using very high pressure, diamonds can be made from peanut butter.

Scientists from the Bavarian Research Institute of Geophysics and Geochemistry tried to simulate in the laboratory the conditions of the Earth's lower mantle, where at a depth of 2,900 kilometers the pressure is 1.3 million times higher than atmospheric pressure. During the experiment, some innovative ways of producing diamonds were discovered. According to one hypothesis, diamonds are formed from carbon under the influence of very high pressure. Carbon is found in almost all foods. And since the researchers had only peanut butter on hand, they tried it out. Unfortunately, the hydrogen, which is bonded to carbon in peanut butter, slows the process down significantly: even a small diamond takes weeks to produce. Thus scientific thought proves that the most incredible transformations are quite possible.

Fact number 7. The height of the Eiffel Tower can change by 12 centimeters depending on the air temperature

An iron rod 300 meters long expands by 3 mm when the temperature rises environment one degree.

This is exactly what is happening with the Eiffel Tower, which is approximately 324 meters high.

In hot sunny weather, the iron material of the tower can heat up to +40 degrees, and in winter in Paris it cools down to about 0 degrees (great frosts are rare there).

So the height eiffel tower can fluctuate by 12 centimeters (3mm*40=120mm).

Fact #8: A conventional microwave uses much more energy to keep the built-in clock running than it does when reheating food.

While in standby mode, a modern microwave consumes approximately 3 watts per hour. Already 72 watts come out per day, and if we multiply this number by thirty days, we get an energy consumption of 2160 watts per month.

If we assume that we use the microwave every day for 5 minutes, we get 150 minutes or 2.5 hours per month. Modern stoves consume about 0.8 kW / h in heating mode. It turns out that with this use, the energy consumption directly for heating food is 2000 watts. If you buy a more economical model that consumes only 0.7 kWh, we get only 1.75 kW per month.

Fact #9. The first computer mouse was made of wood.

Sometimes it's just curious to know the fate of the items that we use every day.

The computer mouse in the design familiar to us was introduced to the world in 1984. by Apple. Largely thanks to her, Macintosh computers have become incredibly popular. But this small, but such a necessary device begins its true history 20 years earlier.

In 1964, Stanford engineer Douglas Engelbart developed a manipulator to work with operating system oN-Line System (NLS). Initially, the device was a wooden box. self made with two wheels inside and a button on the case. After some time, the device has a third button, and a couple of years later Engelbart receives a patent for his invention.

Next, Xerox enters the business, but its modification of a computer mouse costs about $ 700, which by no means contributes to its mass distribution. And only the company of Steve Jobs is able to develop a similar device with a cost of $ 20-30, which was included in everyday life billion people.

Interesting scientific facts

1. Pseudo-blindness is a phenomenon in which blind people develop a physiological response to visual stimuli (such as an angry face) despite being unable to see them.

9. Every cell in your body has been dividing since life began on Earth. And all this division will end with your death, except for the cells that you pass on to your descendants (1 per child) and certain circumstances (such as organ donation).

16. Your lungs have the same surface area as a tennis court.

Here are some interesting and amazing facts about science, which includes the study of our Universe, as well as touch on the topic of the elixir of immortality and some disturbing moments.

What is so interesting about science?

The world of science has inexhaustible information, but where else more information still remains inaccessible to human minds. However, we strive to penetrate the secrets of the universe, which leads us to various discoveries, many of which are extremely fascinating and amazing.

What interesting facts about science of various directions can be cited as an example today, so much so that each reader finds something interesting in each of them? Let's try to talk about the most amazing and relevant.

Head of the Department of Geocryology of one of Russian universities Anatoly Brushkov introduced himself into the body of an ancient bacterium, once discovered in Siberia in a frozen state. As he assures, it contains the gene responsible for longevity. It was found in the region of Yakutia, whose inhabitants are distinguished by a high life expectancy.

The scientist believes that bacterial cells are endowed with special mechanisms that allow them to significantly prolong their existence. Brushkov insists that the experiment, set on itself, will be successful, which will once be confirmed by the extension of his life. Although, how can we know how long he would have lived without this bacterium?

Are we alone in the universe?

Interesting Facts about science in the field of astronomy often shock the world. Some time ago, during joint research conducted by German and American scientists, it was possible to detect radio signals sent from space. Researchers have no doubt that they come from outside the solar system, and the energy of the source of these signals is conventionally equated to the energy generated by the Sun during the day.

A variety of hypotheses are being built on this basis, and the main one is the opinion that it was an attempt by an extraterrestrial civilization to establish contact with us. Or the signals are the result of certain processes occurring in space, about which modern science nothing is known.

Scientists are also confident that the source is located somewhere within our galaxy, and not outside it, and in the near future attempts will be made to determine more accurate coordinates.

Black holes or spatial gates?

Everyone has heard about the existence of black holes in the universe. These are substances that have a large mass and energy, and absorb all matter into themselves, including any cosmic bodies.

Renowned physicist Stephen Hawking insists that these holes can act as a gateway from one universe to another. However, according to the scientist, a traveler who has entered such a gate may end up anywhere in some other universe, but he will never be able to return to this one.

Previously, black holes were considered a dead end, an element of the end of the world. Now Hawking is of the opinion that this is a one-way tunnel with a one-way ticket. Such a hypothesis is, in fact, an attempt to answer the question of scientists where bodies and objects can disappear, including sunlight. After all, this contradicts the earthly laws of physics and the main one: energy does not come from nowhere and does not disappear into nowhere.

endangered bees

Interesting facts about science emerge in the world of fauna. Scientists suggest that within 20 years, bees may completely disappear on our planet. Already, the process of their disappearance is dynamically progressing. For example, in Russia, the number of these insects has almost halved.

The researchers cite the deterioration environmental situation. In addition, the rapid development of telecommunication systems affects the form of radio emissions, which also makes it impossible for many species of organisms to exist on Earth.

How much is the Earth worth?

An interesting thought occurred to one American astrophysicist. He considered that the mass of the planets of the solar system and their sizes are no longer of interest to anyone, but the cost in monetary terms is new and relevant. In the course of research, GregLaughlin came to the conclusion that our planet is the most expensive of them.