Many people during their school years considered physics a boring subject. But this is not true at all, because in real life everything happens precisely thanks to this science. At this time natural science You can look not only from the side of solving problems and creating formulas. Physics also studies the Universe in which man lives, and therefore living without knowing the rules of this Universe becomes uninteresting.
1. As you know from textbooks, water has no shape, but water still has its own shape. This is a ball.
2.Depending on weather conditions, the height of the Eiffel Tower can fluctuate by 12 centimeters. In hot weather, beams heat up to 40 degrees and under the influence high temperatures expand, which changes the height of the building.
3.To feel weak currents, physicist Vasily Petrov had to remove the top layer of epithelium on the tip of his finger.
4.To understand the nature of vision, Isaac Newton inserted a probe into his eye.
5. The common shepherd's whip is considered the first device to break the sound barrier.
6. You can see x-rays and visible glow if you unfold the tape in a vacuum space.
7.Einstein, known to everyone, was a poor student.
8.The body is not a good conductor of current.
9.The most serious branch of physics is considered nuclear.
10. The most real nuclear reactor acted 2 billion years ago on the territory of Oklo. The reaction of the reactor continued for approximately 100,000 years and only when the uranium vein was depleted did it end.
11. The temperature on the surface of the Sun is 5 times lower than the temperature of lightning.
12. A drop of rain weighs more than a mosquito.
13. Insects that fly are oriented during the flight only towards the light of the Moon or the Sun.
14. The spectrum is formed at the moment when Sun rays pass through droplets in the air.
15. Fluidity formed due to stress is characteristic of glaciers of large ice.
16. Light propagates more slowly in a transparent medium than in a vacuum.
17. There are no two snowflakes with the same pattern.
18.When ice forms, crystal cell begins to lose salt content, which causes the formation of icy and salty water at some points in the downdrafts.
19.For his experiments, physicist Jean-Antoine Nollet used people as a material.
20. Without using a corkscrew, you can open a bottle by leaning a newspaper against the wall.
21.To escape from a falling elevator, you need to take a “lying down” position, while occupying the maximum floor area. This will distribute the impact force evenly throughout the body.
22.Air is not directly heated by the Sun.
23. Due to the fact that the Sun emits light in all ranges, it has White color, although it appears yellow.
24. Sound travels faster where the medium is denser.
25. The noise of Niagara Falls is equivalent to the noise of a factory floor.
26.Water is capable of conducting electricity only with the help of ions that dissolve in it.
27.The maximum density of water is achieved at a temperature of 4 degrees.
28. Almost all oxygen in the atmosphere is of biological origin, but before the emergence of photosynthetic bacteria, the atmosphere was considered oxygen-free.
29.The first engine was a machine called aeolopile, which was created by the Greek scientist Heron of Alexandria.
30. 100 years after Nikola Tesla created the first radio-controlled ship, similar toys appeared on sale.
31.The Nobel Prize was prohibited from being received in Nazi Germany.
32. Short-wave components of the solar spectrum propagate in the air more strongly than long-wave components.
33. At a temperature of 20 degrees, water in the pipeline, which contains methane, can freeze.
34.The only one freely found in natural environment the substance is water.
35.The Sun has the most water. The water there is in the form of steam.
36. It is not the water molecule itself that conducts the current, but the ions contained in it.
37.Only distilled water is a dielectric.
38.Each bowling ball has the same volume, but their mass is different.
39. In the water space you can observe the process of “sonoluminescence” - the transformation of sound into light.
40.The electron was discovered as a particle by English physicist Joseph John Thompson in 1897.
41.Speed electric current equals the speed of light.
42.By connecting ordinary headphones to the microphone input, they can be used as a microphone.
43.Even with very strong wind in the mountains clouds can hang motionless. This occurs due to the fact that the wind moves air masses in a certain flow or wave, but at the same time various obstacles are flown around.
44.Blue or green pigments in a shell human eye No.
45.To be able to look through glass that has a matte surface, you should stick a piece of transparent tape on it.
46.At a temperature of 0 degrees, water in its normal state begins to turn into ice.
47. In the Guinness beer drink, you can notice how the bubbles go down the walls of the glass instead of going up. This occurs because the bubbles in the center of the glass rise faster and push the liquid down at the rim with stronger viscous friction.
48.The phenomenon of an electric arc was first described by a Russian scientist Vasily Petrov in 1802.
49.The Newtonian viscosity of a liquid depends on the nature and temperature. But if the viscosity also depends on the velocity gradient, then it is called non-Newtonian.
50.V freezer hot water will freeze faster than cold.
51. In 8.3 minutes, photons in outer space capable of reaching Earth.
52. About 3,500 terrestrial planets have been discovered to date.
53.All objects have the same falling speed.
54.If a mosquito is on the ground, then a drop of rain can kill it.
55.All objects that surround a person consist of atoms.
56.Glass is not considered a solid because it is a liquid.
57. Liquid, gaseous and solid bodies always expand when heated.
58.Lightning strikes approximately 6,000 times per minute.
59.If hydrogen burns in the air, water is formed.
60. Light has weight, but has no mass.
61. The moment a person strikes a match against a box, the temperature of the match head rises to 200 degrees.
62. During the process of boiling water, its molecules move at a speed of 650 meters per second.
63. At the tip of the needle in a sewing machine, pressure develops up to 5000 atmospheres.
64. There is a physicist in outer space who received an award for the most ridiculous discovery in science. This is Andrey Geim from Holland, who in 2000 was awarded for studying the levitation of frogs.
65. Gasoline does not have a specific freezing point.
66.Granite conducts sound 10 times faster than air.
67.White color reflects light, and black attracts it.
68. By adding sugar to water, the egg will not drown in it.
69.Clean snow will melt more slowly than dirty snow.
70. A magnet will not act on stainless steel because it does not have different proportions of nickel that interfere with the iron atoms.
Most people are sure that physics is boring and has little to do with life. Even knowing that many phenomena in it have a scientific explanation, they consider understanding the nature of each of them accessible only to specialists.
In fact, physics is not only equations, formulas and diagrams. And the people studying it are by no means creatures covered in book dust. and scientists involved in this science are proof of this.
Is physics ever interesting?
Everything that exists on Earth and beyond is subject to physical laws. People don't think about it, but they use it Everyday life. For example, everyone knows that you should not swim in a river during a thunderstorm, because you need to be afraid of being struck by lightning. But it is also dangerous in an open, dry space. What's scary about water? And the fact that it conducts electricity perfectly, but only thanks to the impurities it contains, ions of mineral salts. Water molecules themselves do not perceive current, but ignorant people have no idea about this. Although it is unlikely that knowledge of such interesting facts about physics would encourage them to fill swimming pools with distilled liquid and swim in a thunderstorm.
Anyone has ridden in an elevator at least once in their life. And many people thought about what to do if he started falling from a height. Most would conclude that there was no chance of survival under such circumstances. Or that at the moment of impact you need to jump. In fact, it is impossible to calculate this time. But if you make sure that the impact force falls on as much as possible large area surface of the body, perhaps everything will be fine. That is, you simply need to lie on the floor. As seen, interesting facts about physics can save lives. 
Sometimes the laws of science look like miracles. For example, when opening a bottle sealed with a cork against a wall. If you cover the latter with folded paper and hit it with the bottom of the vessel at a strictly 90-degree angle, the plug will come out so much that it can be removed without a corkscrew. This is possible due to a sharp change in the speed of liquid flow in the bottle due to a collision with a wall. The impact falls right on the traffic jam.
Do not miss! Interesting facts about mushrooms
And so that craftsmen open bottles and empty them in large quantities They knew the limit in this, Pythagoras at one time invented a special mug. It can only be filled with liquid to a certain level. Everything higher flows out. This is possible thanks to the curved tube inside the mug, one edge of which is open from the bottom, and the other has an outlet inside. This is nothing more than the law of communicating vessels, discovered by Pascal.
“Physicist” sounds proud
People who study this science have not only high intelligence and interest in the unusual, but also dedication, a sense of humor and a thirst for beauty. Evidence of this is:
- Who could have guessed that portraits Nobel laureates, painted by a great artist, can cost a bag of millet? But this happened in 1921. Future famous scientists Pyotr Kapitsa and Nikolai Semenov posed, and Boris Kustodiev wrote. The future luminaries of science earned the fee given to the artist by repairing the mill. Young scientists came to Kustodiev because they considered him, who painted portraits of celebrities, worthy of capturing them;
- There is a physicist who has awards for the most remarkable and most ridiculous discoveries in science. This is the Dutchman Andre Geim, who in 2000 received the Ig Nobel Prize for studying the levitation of frogs and in 2010 the Nobel Prize for the discovery of the properties of graphene;
- Among interesting facts about physicists not only funny and curious, but also testifying to the dedication of scientists and dedication to their work. For experiments on studying the electric arc, Vasily Petrov got rid of the top layer of skin on his fingers in order to feel the weak currents necessary for this. And Newton, interested in the capabilities of the retina, inserted a probe into his own eye. So he checked the value of the light pressure on it.
Do not miss! Interesting facts about films
Test( 11 ) Retake( 3 )
Don't miss the most interesting things
What science is rich in interesting facts? Physics! 7th grade is the time when schoolchildren begin to study it. So that a serious subject does not seem so boring, we suggest starting your studies with interesting facts.
Why are there seven colors in the rainbow?
Interesting facts about physics can even involve rainbows! The number of colors in it was determined by Isaac Newton. Aristotle was also interested in such a phenomenon as the rainbow, and its essence was discovered by Persian scientists back in the 13-14th century. However, we are guided by the description of the rainbow that Newton made in his work "Optics" in 1704. He isolated the colors using a glass prism.
If you look closely at a rainbow, you can see how colors smoothly flow from one to another, forming a huge number of shades. And Newton initially identified only five main ones: violet, blue, green, yellow, red. But the scientist had a passion for numerology, and therefore wanted to bring the number of colors to the mystical number “seven”. He added two more colors to the description of the rainbow - orange and blue. This is how a seven-color rainbow turned out.
Liquid form
Physics is all around us. Interesting facts can surprise us, even when it comes to something as common as plain water. We are all used to thinking that a liquid does not have its own shape; even a school physics textbook says this! However, it is not. The natural shape of a liquid is a sphere.
Height of the Eiffel Tower
What is the exact height of the Eiffel Tower? And it depends on the weather! The fact is that the height of the tower varies by as much as 12 centimeters. This occurs because in hot sunny weather the structure heats up, and the temperature of the beams can reach up to 40 degrees Celsius. And as you know, substances can expand under the influence of high temperature.
Dedicated scientists
Interesting facts about physicists can not only be funny, but also tell about their dedication and devotion to their favorite work. While studying the electric arc, physicist Vasily Petrov removed the top layer of skin on his fingertips to sense weak currents.
And Isaac Newton inserted a probe into his own eye to understand the nature of vision. The scientist believed that we see because light presses on the retina.
Quicksand
Interesting facts about physics can help you understand the properties of such an interesting thing as quicksand. They represent: A person or animal cannot sink completely into quicksand due to its high viscosity, but it is also very difficult to get out of it. To pull your foot out of quicksand, you need to make an effort comparable to lifting a car.
You cannot drown in it, but dehydration, sun, and tides pose a danger to life. If you fall into quicksand, you need to lie on your back and wait for help.
Supersonic speed
You know what the first device was that overcame the Common Shepherd's Whip. The click that scares the cows is nothing more than a pop when overcoming the strong impact the tip of the whip moves so fast that it creates shock wave. The same thing happens with an airplane flying at supersonic speed.
Photon spheres
Interesting facts about physics and the nature of black holes are such that sometimes it is simply impossible to even imagine the implementation of theoretical calculations. As you know, light consists of photons. When photons fall under the influence of a black hole's gravity, they form arcs, regions where they begin to orbit. Scientists believe that if you place a person in such a photon sphere, he will be able to see his own back.
Scotch
It's unlikely that you've unwound tape in a vacuum, but scientists have done it in their laboratories. And they found out that when unwinding, a visible glow and X-ray emission occurs. Power x-ray radiation such that it even allows you to take pictures of body parts! But why this happens is a mystery. A similar effect can be observed when asymmetric bonds in a crystal are destroyed. But here's the problem - there is no crystalline structure in the tape. So scientists will have to come up with another explanation. There is no need to be afraid of unwinding the tape at home - no radiation occurs in the air.
Experiments on humans
In 1746, the French physicist and part-time priest Jean-Antoine Nollet investigated the nature of electric current. The scientist decided to find out what the speed of electric current is. Here's how to do it in a monastery...
The physicist invited 200 monks to the experiment, connected them using iron wires and discharged a battery of newly invented Leyden jars into the poor fellows (they are the first capacitors). All the monks reacted to the blow at the same time, and this made it clear that the speed of the current was extremely high.
Brilliant loser
Interesting facts from the lives of physicists can give false hope to unsuccessful students. There is a legend among careless students that the famous Einstein was a real bad student, knew little mathematics and generally failed his final exams. And nothing, it became worldwide. We hasten to disappoint: Albert Einstein began to show remarkable mathematical abilities as a child and had knowledge that far exceeded the school curriculum.
Perhaps rumors about the scientist’s poor performance arose because he did not immediately enter the Higher Polytechnic School of Zurich. Albert passed the exams in physics and mathematics brilliantly, but did not score the required number of points in other disciplines. Having improved knowledge on necessary items, the future scientist successfully passed the exams in next year. He was 17 years old.
Birds on a wire
Have you noticed that birds love to sit on wires? But why don’t they die from electric shock? The thing is that the body is not a very good conductor. The bird's feet create a parallel connection through which a small current flows. Electricity prefers wire, which is the best conductor. But as soon as the bird touches another element, for example, a grounded support, electricity rushes through its body, leading to death.
Hatches against cars
Interesting facts about physics can be remembered even while watching urban Formula 1 races. Sports cars move at such high speeds that a low pressure is created between the bottom of the car and the road surface, which is quite enough to lift the manhole cover into the air. This is exactly what happened at one of the city races. The manhole cover collided with the next car, causing a fire and the race was stopped. Since then, to avoid accidents, hatch covers have been welded to the rim.
Natural nuclear reactor
One of the most serious branches of science is nuclear physics. There are interesting facts here too. Did you know that 2 billion years ago there was a real natural nuclear reactor operating in the Oklo area? The reaction continued for 100,000 years until the uranium vein was exhausted.
An interesting fact is that the reactor was self-regulating - water entered the vein, which played the role of a neuron inhibitor. During active progress chain reaction the water boiled away and the reaction weakened.
Molecule (novolat. molecula, diminutive from Latin. moles - mass), the smallest particle of a substance that has its chemical properties. A molecule consists of atoms, or more precisely, of atomic nuclei, the inner electrons surrounding them and the outer valence electrons that form chemical bonds (see Valence). The inner electrons of atoms usually do not participate in the formation of chemical bonds. The composition and structure of the molecules of this substance do not depend on the method of its preparation. In the case of monatomic molecules (for example, noble gases), the concepts of molecule and atom coincide. The concept of molecules was first introduced in chemistry in connection with the need to distinguish a molecule, as the smallest amount of a substance that enters into chemical reactions, from an atom, as the smallest amount of a given element that is part of a molecule (International Congress in Karlsruhe, 1860). The basic principles of the structure of molecules were established as a result of research chemical reactions, analysis and synthesis chemical compounds, as well as through the use of a number of physical methods. Atoms are combined into molecules in most cases by chemical bonds. Typically, such a bond is created by one, two or three pairs of electrons shared between two atoms. A molecule can contain positively and negatively charged atoms, i.e., ions; in this case, electrostatic interactions are realized. In addition to those indicated, there are also weaker interactions between atoms in molecules. Repulsive forces act between valence-unbonded atoms. The composition of molecules is expressed by chemical formulas. The empirical formula (for example, C2 H6 O for ethyl alcohol) is established based on the atomic ratio of the elements contained in the substance, determined chemical analysis, and molecular weight. The development of the study of the structure of molecules is inextricably linked with successes, first of all organic chemistry. The theory of the structure of organic compounds, created in the 60s. 19th century the works of A. M. Butlerov, F. A. Kekule, A. S. Cooper and others, made it possible to represent the structure of molecules by structural formulas or structural formulas expressing the sequence of valence chemical bonds in molecules. With the same empirical formula, there can be molecules of different structures that have different properties (the phenomenon of isomerism). These are, for example, ethyl alcohol C5 H5 OH and dimethyl ether (CH3) 2 O. The structural formulas of these compounds differ: In some cases, isomeric molecules quickly transform into one another and a dynamic equilibrium is established between them (see Tautomerism). Subsequently, J. H. Van't Hoff and independently the French chemist A. J. Le Bel came to an understanding of the spatial arrangement of atoms in a molecule and to an explanation of the phenomenon of stereoisomerism. A. Werner (1893) extended the general ideas of the theory of structure to inorganic complex compounds. By the beginning of the 20th century. chemistry had detailed theory structure of molecules, based on the study of only their chemical properties. It's great that it's straight physical methods Studies developed later, in the vast majority of cases, completely confirmed structural formulas chemistry established by studying macroscopic quantities of a substance rather than individual molecules. In physics, the concept of molecules turned out to be necessary to explain the properties of gases, liquids and solids. Direct experimental evidence of the existence of molecules was first obtained by studying Brownian motion(French physicist J. Perrin, 1906).
Molecule (novolat. molecula, diminutive from Latin. moles - mass), the smallest particle of a substance that has its chemical properties. A molecule consists of atoms, or more precisely, of atomic nuclei, surrounding internal electrons and external valence electrons that form chemical bonds (see Valence). The inner electrons of atoms usually do not participate in the formation of chemical bonds. The composition and structure of the molecules of this substance do not depend on the method of its preparation. In the case of monatomic molecules (for example, noble gases), the concepts of molecule and atom coincide. The concept of molecules was first introduced in chemistry in connection with the need to distinguish a molecule, as the smallest amount of a substance that enters into chemical reactions, from an atom, as the smallest amount of a given element included in the molecule (International Congress in Karlsruhe, 1860). The basic laws of the structure of molecules were established as a result of the study of chemical reactions, analysis and synthesis of chemical compounds, as well as through the use of a number of physical methods. Atoms are combined into molecules in most cases by chemical bonds. Typically, such a bond is created by one, two or three pairs of electrons shared between two atoms. A molecule can contain positively and negatively charged atoms, i.e., ions; in this case, electrostatic interactions are realized. In addition to those indicated, there are also weaker interactions between atoms in molecules. Repulsive forces act between valence-unbonded atoms. The composition of molecules is expressed by chemical formulas. The empirical formula (for example, C2H6O for ethyl alcohol) is established based on the atomic ratio of the elements contained in the substance, determined by chemical analysis, and molecular weight. The development of the study of the structure of molecules is inextricably linked with the successes, first of all, of organic chemistry. The theory of the structure of organic compounds, created in the 60s. 19th century the works of A. M. Butlerov, F. A. Kekule, A. S. Cooper and others, made it possible to represent the structure of molecules by structural formulas or structural formulas expressing the sequence of valence chemical bonds in molecules. With the same empirical formula, there can be molecules of different structures that have different properties (the phenomenon of isomerism). These are, for example, ethyl alcohol C5H5OH and dimethyl ether (CH3)2O. The structural formulas of these compounds vary: In some cases, isomeric molecules quickly transform into one another and a dynamic equilibrium is established between them (see. Tautomerism). Subsequently, J. H. Van't Hoff and independently the French chemist A. J. Le Bel came to an understanding of the spatial arrangement of atoms in a molecule and to an explanation of the phenomenon of stereoisomerism. A. Werner (1893) extended the general ideas of the theory of structure to inorganic complex compounds. By the beginning of the 20th century. chemistry had a detailed theory of the structure of molecules, based on the study of only their chemical properties. It is remarkable that direct physical methods of research, developed later, in the overwhelming majority of cases completely confirmed the structural formulas of chemistry established by studying macroscopic quantities of a substance, and not individual molecules. In physics, the concept of molecules turned out to be necessary to explain the properties of gases, liquids and solids. Direct experimental evidence of the existence of molecules was first obtained in the study of Brownian motion (French physicist J. Perrin, 1906).
