Science

When physics studies the process of motion of bodies in non-inertial frames of reference, one has to take into account the so-called Coriolis acceleration. In the article we will give it a definition, we will show for what reason it arises and where it manifests itself on Earth. Last modified: 2025-01-23 12:01

Sodium borohydride: general description, chemical and physical properties. Methods for obtaining a substance in industry. Applications of sodium borohydride in various industries. Production of metal-boron coatings and their performance characteristics. Last modified: 2025-01-23 12:01

Before determining how great is the role and importance of blastula formation during cell fertilization, it is worth considering the very concept of fertilization. In this article, we will give an exact definition of what a blastula is and what significance it has in the process of fertilization. Last modified: 2025-01-23 12:01

The system of education and science in the USSR was considered one of the best in the world. During the Soviet Union, these industries were considered the leading ones, because the development of the economy directly depended on them. Priority then were technical and natural science areas. Thanks to science, the USSR managed to build up a significant scientific and technical potential, consisting of material and spiritual resources, improve production, he althcare, social infrastructure. Last modified: 2025-01-23 12:01

For modern scientists, a black hole is one of the most mysterious phenomena in our universe. The study of such objects is difficult, it is not possible to try them "by experience". The mass, density of the substance of a black hole, the processes of formation of this object, dimensions - all this arouses interest among specialists, and at times - bewilderment. Let's consider the topic in more detail. First, let's figure out what such a hole is. Last modified: 2025-01-23 12:01

Every person knows that the bodies around us are made up of atoms and molecules. They have different shapes and structures. When solving problems in chemistry and physics, it is often necessary to find the mass of a molecule. Consider in this article several theoretical methods for solving this problem. Last modified: 2025-01-23 12:01

The concept of cumulative effect is used in various branches of human activity. It can be encountered not only in the scientific field. Without knowing it, we become participants in a cumulative process when we are busy with daily activities. Last modified: 2025-01-23 12:01

Colluvium, colluvial deposits (Latin colluvio; accumulation, disordered pile) - detrital material accumulated on the slopes of mountains or at their foot by moving from higher areas under the influence of gravity (scree, landslides, landslides) and movement thawing, water-saturated weathering products in the areas of distribution of permafrost rocks. Last modified: 2025-01-23 12:01

The theory of acquired needs by D. McClelland is a kind of instruction on how to properly manage subordinates. According to the conclusions, the theory implies three types of personalities who strive for different goals. Based on their preferences and views, the leader must develop the motivation for action in the representatives of a particular group. Last modified: 2025-01-23 12:01

Under the classification of the rights and freedoms of citizens, one should understand their division into certain elements that make up a set of legal norms. Each of them regulates a specific set of relations that arise in society. The types of law existing today are subdivided, in turn, into institutions of law. For example, the Constitution, which serves as a legal norm, the constitutional court are the institutions of constitutional law. Last modified: 2025-01-23 12:01

What is RNA polymerase? Why is it necessary in the human body? What is she responsible for?. Last modified: 2025-01-23 12:01

Amino acids are substances indispensable for the human body, which are the building material for proteins. What are amino acids? Where are they kept? Which of them are the most valuable for the body?. Last modified: 2025-01-23 12:01

When studying a school course in physics, an important topic in the section of mechanics is the law of universal gravitation. In this article, we will take a closer look at what it is, and with what mathematical formula it is described, and also give examples of the force of gravity in everyday human life and on cosmic scales. Last modified: 2025-01-23 12:01

The sonorous, expressive voice fascinates and excites. Inspiring intonations call for new achievements. And vice versa - their absence causes boredom and irritation. It turns out that the voice given to man by nature needs conscious development and careful care. Last modified: 2025-01-23 12:01

Soviet pathophysiologist Aleksandr Alexandrovich Bogomolets became famous for creating the doctrine of the interaction between the body and the tumor, which radically changed the idea of tumor growth that existed at that time. He was the founder of the Ukrainian and Russian schools of gerontology, endocrinology and pathophysiology, was the founder of the first medical research institutes in Ukraine and Russia. Last modified: 2025-01-23 12:01

The development of mathematics in our country, and throughout the world, is inextricably linked with the name of Sergei Lvovich Sobolev. He made a fundamental contribution to this science and laid the foundation for the development of new directions. Sergei Lvovich is rightfully considered one of the greatest mathematicians of the 20th century. We will tell about his life and scientific activity in the article. Last modified: 2025-01-23 12:01

Information and analytical activity: concept, essence and structure, basic principles. A brief history of the development of this type of mental activity. Description of the technology of carrying out the work. Information sources. Automation of information and analytical activities. Last modified: 2025-01-23 12:01

Cicero's statements about the state are a rarity in history. A philosophically inclined man with political power was born in Arpin in 106 BC. e. His career took place during the twilight of the "sick" Roman Empire. He was a self-proclaimed constitutionalist, but also a dedicated man who wanted peace and harmony above all else. Cicero's natural views on the state have an impact to this day. Last modified: 2025-01-23 12:01

In thermodynamics, when studying transitions from the initial to the final state of a system, it is important to know the thermal effect of the process. The concept of heat capacity is closely related to this effect. In this article, we consider the question of what is meant by the isochoric heat capacity of a gas. Last modified: 2025-01-23 12:01

Human life has been closely intertwined with crime since ancient times. Criminology is the science of criminal activity, the causes and methods of its prevention. The modern development of society and technology helps to better understand the motives, track the consequences and compare the facts of committed crimes. Last modified: 2025-01-23 12:01

A sound wave is a mechanical longitudinal wave of a certain frequency. In the article we will understand what longitudinal and transverse waves are, why not every mechanical wave is sound. Find out the speed of the wave and the frequencies at which sound occurs. Let's find out if the sound is the same in different environments and learn how to find its speed using the formula. Last modified: 2025-01-23 12:01

General concept of discipline, its subject and tasks. A brief excursion into the history of forensic habitoscopy. Description of general physical, anatomical and functional features of a person's appearance. Display methods. Identification periods and patterns of changes in appearance with age. Last modified: 2025-01-23 12:01

Thermodynamics is an important branch of physics that studies and describes thermodynamic systems in equilibrium or tending to it. In order to be able to describe the transition from some initial state to a final state using the equations of thermodynamics, it is necessary to make an approximation of a quasi-static process. What is this approximation, and what types of these processes are, we will consider in this article. Last modified: 2025-01-23 12:01

When studying the behavior of gases in physics, much attention is paid to isoprocesses, that is, such transitions between the states of the system, during which one thermodynamic parameter is preserved. However, there is a gas transition between states, which is not an isoprocess, but which plays an important role in nature and technology. This is an adiabatic process. In this article, we will consider it in more detail, focusing on what the gas adiabatic index is. Last modified: 2025-01-23 12:01

The process of space exploration, which practically began in the middle of the 20th century, is usually presented on the positive side as a new stage in the development of scientific and technological knowledge. However, already after the launch of the first satellite, a completely different negative process began in parallel, associated with the clogging of near-Earth orbits. Artificial debris in space poses a lot of threats to both spacecraft and the Earth. Last modified: 2025-01-23 12:01

The Hierarchy Analysis Method (HAI) is a mathematical tool for a systematic approach to complex decision-making problems. The MAI does not prescribe any “correct” one to the decision maker (DM), but allows him to interactively find such an option ( alternative) that is best consistent with his understanding of the essence of the problem and the requirements for solving it. Last modified: 2025-01-23 12:01

Any science has its own subject, which is the result of theoretical abstraction, and which allows you to highlight certain patterns of development and functioning of the object. The specificity of sociology is that it studies society. Therefore, let's see how the founders of sociology defined the subject of sociology. Last modified: 2025-01-23 12:01

Lewis Coser is a popular American and German sociologist. He is known as one of the founders of such a branch of science as the sociology of conflict. His scientific activity is highly valued all over the world. In Russia, the most popular works are: "Masters of Sociological Thought: Ideas in a Historical and Social Context", "Functions of Social Conflict". Last modified: 2025-01-23 12:01

What is the object of the economy? In what sense can this phrase be used? What is their importance?. Last modified: 2025-01-23 12:01

Viscosity coefficient is a key parameter of a working fluid or gas. In physical terms, viscosity can be defined as the internal friction caused by the movement of particles that make up the mass of a liquid (gaseous) medium, or, more simply, the resistance to movement. Last modified: 2025-01-23 12:01

Bodies that make circular motions in physics are usually described using formulas that include angular velocity and angular acceleration, as well as quantities such as moments of rotation, forces and inertia. Let's take a closer look at these concepts in this article. Last modified: 2025-01-23 12:01

With the increasing complexity of human activity, methods of measuring time also improved. Each interval began to acquire more and more precise meaning. An atomic and ephemeral second, an astronomical hour arose (“How much is this?” You ask. The answer is a little lower). Today, the focus of our attention is the hour, the most commonly used unit of time in everyday life, as well as the clock, without which it is difficult to imagine the modern world. Last modified: 2025-01-23 12:01

The process by which a cell can kill itself is called programmed cell death. This mechanism has several varieties and plays an important role in the physiology of various organisms, especially multicellular ones. Apoptosis is the most common and well-studied form of PCD. Last modified: 2025-01-23 12:01

Entomology is the science of insects. It originated in the 16th century. It began to improve rapidly, thanks to the development of culture and agriculture. Last modified: 2025-01-23 12:01

The importance of rubber in the national economy is enormous. But the use of natural rubber in its pure form is a rarity. Most often it is used in the form of rubber. Products made from this material are found in everyday life at every step. This includes wire insulation, the production of shoes and clothing, and car tires, and much more. Last modified: 2025-01-23 12:01

This article is intended for general familiarization with the combustion process. The main attention will be paid to the diversity of the types of this phenomenon. In particular, we will focus on laminar, turbulent, heterogeneous and other types of combustion. Let's talk about fire. Last modified: 2025-01-23 12:01

Questions that constantly arise when contemplating space objects require answers, and celestial riddles require clues and scientific explanations. Here, for example, what is the difference between an asteroid and a meteorite? Not every student (and even an adult) can immediately answer this question. However, it must be said that watching the night sky is doubly pleasant when its unearthly inhabitants are well known and understandable to you. Last modified: 2025-01-23 12:01

Every person has their own concept of a free society: freedom of thought, the right to choose, liberation from stereotypes… A society free from the shackles of government and excessive tyranny from the authorities is considered the most desirable in the modern world. Last modified: 2025-01-23 12:01

This article will be devoted to the phenomenon of the precipitation reaction. Here we will consider the features of the formulation of this phenomenon, the phenomenon of diffusion, general characteristics, role in human life and much more. Last modified: 2025-01-23 12:01

Today we will reveal the essence of the wave nature of light and the phenomenon “degree of polarization” related to this fact. Last modified: 2025-01-23 12:01