Socialism, liberalism, conservatism are the main public teachings that are most popular in the world today
Science 2024, November
The debate about whether Ivan Petrovich Pavlov was a great scientist of his time, or whether it gave him real pleasure to see the torment of his “wards” still does not subside. Let's try to put aside emotions and look at everything impartially
Who are they - the first people in space? The second half of the 20th century is significant for many events. One of the most grandiose was the discovery of outer space by man. The Soviet Union played a leading role in this qualitative leap, which mankind made when it began to explore outer space. Despite the fierce rivalry between the major powers of the world, the USSR and the USA, the first people in space were from the Soviet Union, which caused bouts of impotent anger in the rival country
Very often we willy-nilly think about seemingly strange and meaningless questions. We are very often interested in the numerical values of some parameters, as well as their comparison with other, but known to us quantities. Very often such questions come to the mind of children, and parents have to answer them
The topic of our today's article will be the kinematics of a material point. What is it all about? What concepts appear in it and what definition should be given to this term? We will try to answer these and many other questions today
Basis is the foundation. Everyone knows about it. However, not every person realizes that the concept of the basis is applicable in various fields. Philosophy, economics, mathematics and even astronomy are only a small part of those disciplines that use the concept of basis
What is physics? What branches does physics have? How does the subject help in everyday life? Professions and speci alties related to physics. Personal experiences at school and at home. Can physics be used for your own purposes? What sciences are associated with? Examples of relationship with other sciences
The concept of a general adaptation syndrome appeared in 1956. It was derived as part of the study of the efforts of an organism that adapts to changing external conditions
Ontology is a philosophical study of being. In a broader sense, it studies concepts that are directly related to being, in particular becoming, existence, reality, as well as to the main categories of being and their relationships
The article describes the biographies and achievements of the greatest physicists of all mankind. These are Galileo Galilei, Marie Curie, Isaac Newton, Albert Einstein and others
The article tells about what a magnetic storm is, as a result of what space activity it occurs and how it can be dangerous for people
In this paper, we invite you to consider what the biological cycle is. Its functions and significance for the living organisms of our planet. We will also pay attention to the issue of the energy source for its implementation
Cosmonaut spacesuits are not just suits for flying in orbit. The first of them appeared at the beginning of the twentieth century. It was a time when almost half a century remained before space flights. However, scientists understood that the development of extraterrestrial spaces, the conditions of which differ from those familiar to us, is inevitable. That is why for future flights they came up with cosmonaut equipment that can protect a person from a deadly external environment for him
We invite you to meet such a great mathematician as Euclid. Biography, a summary of his main work and some interesting facts about this scientist are presented in our article
Nikolai Ivanovich Lobachevsky - an outstanding Russian mathematician, for four decades - rector of Kazan University, activist of public education, founder of non-Euclidean geometry
Activity is an integral part of human life. From birth, a person learns to interact with the world around him. All people go through a difficult path of learning and development, which is an active activity. It is unlikely that everyone thinks about it, because the activity for a person is so natural and automated that attention is simply not fixed on it
Energy is an important industry that plays a huge role in human life. The energy state of the country depends on the work of many scientists in this field. Today they are looking for alternative energy sources
For the human body, as well as other living beings, energy is needed. Without it, no processes can take place. After all, every biochemical reaction, any enzymatic process or stage of metabolism needs an energy source
Joseph Henry is a famous American physicist, considered one of the most famous American scientists, he is put on a par with Benjamin Franklin. Henry created magnets, thanks to which he discovered a fundamentally new phenomenon in electromagnetism, which was called self-induction. In parallel with Faraday, he discovered mutual induction, but Faraday managed to publish the results of his research earlier
This term refers to the cloud of dust and smoke that occurs after a nuclear explosion. It would be better, of course, never to know what a mushroom cloud is. This radioactive cloud is named in this way because of the outward resemblance noticed by scientists to the fruiting bodies of ordinary mushrooms that can be found and collected in the forest
Water is the most important component of our life, one of the most amazing substances on the planet. Without it, there would be nothing, and the unusual properties of water amaze scientists to this day
Today we will tell you about what the energy level of an atom is, when a person encounters this concept, and where it is applied
Materials with a shape memory effect: a description of a physical phenomenon and its explanation from the standpoint of materials science. Typical alloys with this property. Application in industry and medicine. Disadvantages and ways of technology development
Resonance is one of the most common physical phenomena in nature. The phenomenon of resonance can be observed in mechanical, electrical and even thermal systems. Without resonance, we would not have radio, television, music, and even playground swings, not to mention the most effective diagnostic systems used in modern medicine. One of the most interesting and useful types of resonance in an electrical circuit is voltage resonance
Molecular and ionic equations of hydrolysis make it possible to explain the processes that occur when s alts are dissolved in water. Consider the types and equations of hydrolysis
The Copenhagen Interpretation is an interpretation of quantum mechanics by Niels Bohr and Werner Heisenberg. The essence of this interpretation and its scientific resonance will be considered below
We perceive the world around us thanks to two systems: the first and the second signal. To obtain information about the state of the organism and the external environment, the first signaling system uses all the human senses: touch, sight, smell, hearing and taste. The second, younger, signaling system allows you to perceive the world through speech. Its development takes place on the basis of and in interaction with the first in the process of human development and growth
The article is devoted to steel nitriding at home. Features of technology, varieties, etc. are considered
Rotorcraft for civil and military purposes are capable of solving tasks that are inaccessible to any other type of aircraft and modern technology in general. Their main and perhaps the only drawback is their relatively low speed, rarely exceeding 220 km/h on average. Today, many helicopter manufacturers say that the time for records has come
Ruthenium is the lightest and least "noble" of all the platinum group metals. It is perhaps the most "multivalent" element (nine valence states are known)
The principle of operation of any radar station is based on the ability of radio waves to reflect. The focus of the powerful beam of the transmitting antenna is directed to the object under study. Based on the results of studying the reflected signal, conclusions are drawn about the parameters of the object
The official day of the discovery of the first elementary particle in the composition of the atom - the electron, is April 30, 1897. It was on this day that Joseph Thomson informed the meeting of the Royal Institute (London) that he had found out the physical nature of cathode radiation
To have a clear idea of what a circle is, you need to know about its basic characteristics, properties and relationships with other geometric shapes. Read more about all this in the article below
The moon is the only body in the solar system that has been visited by man. This satellite is under the close attention of scientists around the world, it is studied not only from Earth, but also from space. However, our knowledge in this area has not advanced much in recent decades. In addition, the deeper mysteries of the moon have been revealed
Geological section illuminates the lithological section of the studied strata, the thickness of the layers, their position, the structure of geological bodies, the age of the rocks, the position of the groundwater level. Geological sections are extremely important in areas where rocks are covered from above by a thick soil-vegetative layer, modern anthropogenic formations
How to grow a crystal? This question is being asked today not only by schoolchildren who have received the appropriate task in the subject of chemistry, but also by some adults who want to cook an original and tasty treat, sugar candy. All this will be discussed in the material of this article
Different specialists give different interpretations of the concept of "ethnography". Some call it a science or a scientific discipline, others put an unscientific meaning into this concept. So, what is ethnography? When did this term originate and how does it differ from "ethnology"? Translated from the Greek meaning of the word "ethnography" - "description of peoples"
Europe is part of the largest continent, its population is 10% of the total population of the globe. On the European territory there are several so-called dwarf states. How many countries in Europe have this status? At least six: Andorra, Vatican City, Liechtenstein, M alta, Monaco and San Marino
The entire Universe and each of its individual parts consist of many tiny particles, which are commonly called "elementary". For a long time, people believed that only matter and energy were present in space, but at the beginning of the 18th century, antimatter, consisting of positrons, was discovered
All multicellular animals have special structures to fight infection. Some of the responses are instantaneous, so that the causative agent is localized quickly, other responses come more slowly. Collectively, these defenses are called the immune system. It is essential to our survival in a world full of potentially dangerous microbes. Violation of even the smallest part of the system can lead to serious, even life-threatening consequences