Apparatuses are of great importance in chemical technology. The final result of the chemical process depends on how correctly they are selected. Last modified: 2025-01-23 12:01
Science
Semiconductor lasers are quantum generators based on a semiconductor active medium in which optical amplification is created by stimulated emission during a quantum transition between energy levels at a high concentration of charge carriers in the free zone. Last modified: 2025-01-23 12:01
A teacher of this discipline at an educational institution, a specialist in the field of genetic research, an employee of a botanical garden or a zoo calls himself a biologist. So what is a biologist anyway? What is this profession? Who is eligible to be considered a biologist? The answers to these questions - in our small study. Last modified: 2025-06-01 07:06
The comparison of the Middle East problem with such a phenomenon as a tectonic shift, made by Maria Zakharova, Director of the Information and Press Department of the Ministry of Foreign Affairs of the Russian Federation, puzzled and even frightened almost all foreign TV channels. In her statement, they saw not only a challenge, but also a threat to NATO and the United States. Last modified: 2025-01-23 12:01
Mathematics is one of the most difficult subjects in school. And everything would be fine if it were not necessary to take it in the eleventh grade, and even in the form of the exam. Not only was part A removed from this exam a few years ago, in which you only had to choose the correct answer from several proposed ones, but also the theory of probability was added to the school curriculum, and therefore to the test tasks. Last modified: 2025-01-23 12:01
The planet's gaseous envelope, called the atmosphere, plays a key role in shaping ecological systems and creating climatic conditions. The atmosphere is a very dynamic and heterogeneous gaseous structure. Large air masses formed in its depths have a direct and decisive influence on the climatic regime of both individual regions of the globe and the entire planet. Last modified: 2025-01-23 12:01
The article describes the essence of free fall, indicates certain features of this physical indicator. Also mentioned is the record associated with the highest speed of a person falling from a height. Last modified: 2025-01-23 12:01
This article is for those who need to know what the circumference is. Here you will find formulas and a little explanation on the topic. Last modified: 2025-01-23 12:01
The substances that form the basis of our physical world are composed of different types of chemical elements. Four of them are the most common. These are hydrogen, carbon, nitrogen and oxygen. The last element can bind with particles of metals or non-metals and form binary compounds - oxides. In our article, we will study the most important methods for obtaining oxides in the laboratory and industry. We also consider their main physical and chemical properties. Last modified: 2025-01-23 12:01
Chemistry is a science of extremes. In the sense that the actual, real, describing the reality of the numbers in it are either extremely small or extremely large. A lot of people would be frightened by a number with 23 zeros. It's really a lot. But there are so many units (pieces) contained in one mole of a substance. Would you like to carry out calculations with such colossal numbers? It is not comfortable. Last modified: 2025-01-23 12:01
Relic plants and animals are of great scientific value. They are carriers of information and can tell a lot about the natural environment of past eras. Let's get acquainted with plant organisms classified as relic. Last modified: 2025-06-01 07:06
What climate is typical for the Altai Territory? What influences climate formation in Altai Krai? Why is the climate of the eastern and western slopes of Altai different?. Last modified: 2025-06-01 07:06
Modern scientific trends are a large and broad endeavour, in which thousands of laboratories around the world are studying their own highly specialized field from a much larger whole. It is a logical intersection of scientific heritage and centuries of technological advances to advance understanding of the world around us. Last modified: 2025-01-23 12:01
Many phenomena in nature can be displayed using mathematical functions using formulas and graphs. An important point in this study is finding extremum points, which are special areas in the described processes. Last modified: 2025-06-01 07:06
The term "integration" passed into the social sciences from other disciplines - biology, physics, etc. It is understood as the state of connectedness of differentiated elements into a whole, as well as the process of combining these components. Last modified: 2025-01-23 12:01
Hypothesis can act as a method of developing scientific knowledge (advancing and experimental verification of assumptions), as well as an element of the structure of scientific theory. The creation of a hypothetical system in the process of carrying out certain mental operations allows a person to make the proposed structure of certain objects available for discussion and visible transformation. The process of forecasting in relation to these objects becomes more specific and reasonable. Last modified: 2025-01-23 12:01
The axiomatic method is a method of constructing scientific research, widely used in economics, mathematics and other exact sciences. Last modified: 2025-01-23 12:01
How to determine if the interlocutor is interested in the topic of conversation? Is the person telling the truth? How can you hide your self-doubt and give the impression of a confident person? Answers to these questions can be given by an interesting psychological science - kinesics. Last modified: 2025-01-23 12:01
How many different insects surround us in the city and in nature. But what do we know about them? At best, the name of some of the closest living to man. Did you know that insects with complete transformation include not only butterflies so beloved by us and our children, but also ordinary fleas! Let's understand in more detail. Last modified: 2025-01-23 12:01
The dome of heaven, dotted with myriads of stars, has always excited mankind. Scientists, poets and writers, fascinated by this majestic picture, were inspired by great works. Where does space begin and end, and how old is it? What does it consist of, and what is the significance of the study of the universe by scientists?. Last modified: 2025-01-23 12:01
Sociology uses two key approaches to identifying information about the state of society - qualitative, quantitative research methods. The quantitative methodology is based on the idea of the systematization of the human community. Last modified: 2025-01-23 12:01
Substances are rarely found in nature in their pure form. As a rule, this is the most complex combination of many components. Physical and chemical research methods help not only to find out the composition of the test substance, but also to determine its quantitative characteristics. Last modified: 2025-06-01 07:06
The seven-day week first appeared in Babylon, and from there spread throughout the world. Up to this point, people thought that a day was simply the time from sunrise to sunset. But with the advent of the division of days and the appearance of their names, everything changed. In different countries, different days serve as the beginning of the week: somewhere the week starts on Monday, and somewhere on Sunday. Last modified: 2025-01-23 12:01
Ukrainian scientists who made a technological revolution on a planetary scale - a myriad. The article contains the most important names, without which our world would not be the same as it is today. Last modified: 2025-01-23 12:01
The article describes the ways and types of interaction between different bodies. How and why do different physical bodies interact with each other?. Last modified: 2025-01-23 12:01
Many motion problems in classical mechanics can be solved using the concept of the momentum of a particle or the entire mechanical system. Let's take a closer look at the concept of momentum, and also show how the knowledge gained can be used to solve physical problems. Last modified: 2025-01-23 12:01
Man, being a part of nature, has a completely unique property. His brain can perform actions that are called cognitive in psychology - cognitive. The ability of a person to abstract thinking, associated with the development of the cerebral cortex, led him to a purposeful comprehension of the patterns underlying the evolution of nature and society. As a result, such a phenomenon of cognition as fundamental science arose. Last modified: 2025-01-23 12:01
The issue of an alternative reliable energy source has recently become of great relevance. And today, the development of a program for obtaining electricity from the Sun is systematically going on. For this, special stations are being built in Earth's orbit. They are also developing their construction on the moon. Last modified: 2025-01-23 12:01
The article tells about who Thomas Jung is, what he contributed to the development of physics and what else he did besides it. Last modified: 2025-01-23 12:01
The human skull undergoes many changes throughout life. This primarily concerns its appearance. Conventionally, there are five large periods of such transformations. Let's consider each of them in more detail. Last modified: 2025-01-23 12:01
The human brain is a very complex organ in its structure, which consists of many nerve cells and their processes. The striatum can be attributed to one of the structural parts of the brain. Last modified: 2025-01-23 12:01
There are many technologies that provide alternative conflict resolution. One of them is mediation. This is a method of resolving disputes in which a third party appears, a mediator, who should not be interested in winning either of the parties. This is a well-known practice, showing its effectiveness over a long period of time. Last modified: 2025-01-23 12:01
The subject of logic studies a person's thinking from the side of those patterns that a person uses in the process of knowing the truth. In fact, since logic as a science is very multifaceted, it is studied using several methods. Let's take a look at them. Last modified: 2025-01-23 12:01
The article provides some general information about algebraic equations and their roots, examples are given. Last modified: 2025-01-23 12:01
Lysergic acid diethylamide is a psychoactive drug that causes specific conditions and effects in users. d-lysergic acid diethylamide is an odorless and tasteless solid. Lysergic acid dimethylamide is synthesized from the alkaloids of a fungus that affects cereal crops. Last modified: 2025-01-23 12:01
Motor neuron is a cell that, in turn, is responsible for muscle activity. Due to the destruction of such cells, weakening and wasting of muscles occurs. Motor neuron disease is an incurable disease that ultimately leads to the death of the patient. Last modified: 2025-01-23 12:01
What is the state certification of educational institutions? We will identify the main features of such a process, the algorithm of actions. Last modified: 2025-01-23 12:01
There are many reasons for establishing connections with other people. The goals and skills of interpersonal and social contacts are diverse. Knowing the characteristic features of the communication situation, it is possible with great success and with the least effort to achieve the desired result from partners. Last modified: 2025-01-23 12:01
Although Durkheim was inferior in popularity to Spencer or Comte during his lifetime, modern sociologists estimate his scientific merits even higher than the achievements of these scientists. The fact is that the predecessors of the French thinker were representatives of a philosophical approach to understanding the tasks and subject matter of sociology. And Emile Durkheim completed its formation as an independent humanitarian science, which has its own conceptual apparatus. Last modified: 2025-01-23 12:01
Taste and olfactory receptors The human brain constantly receives and processes signals from the outside world with the help of special systems called analyzers. In our article, we will find out what taste and olfactory receptors are, and also determine the physiological mechanism for the occurrence of the corresponding sensations in the human body. Last modified: 2025-01-23 12:01