Millions of chemical reactions take place in the cell of any living organism. Each of them is of great importance, so it is important to maintain the speed of biological processes at a high level. Almost every reaction is catalyzed by its own enzyme. What are enzymes? What is their role in the cell?. Last modified: 2023-12-17 05:12
Science 2024, December
Coronal holes are special areas on the surface of the Sun in the sphere of its corona, which arise due to disturbances in the natural processes inside the star. In these places, the temperature and surface density decrease. Last modified: 2023-12-17 05:12
Once upon a time in school we were taught that humanity is divided into races, each of which has its own characteristic features of appearance. And when we are told that this or that person has a European type of face, we can already roughly imagine what he looks like. But looks aren't everything. Last modified: 2023-12-17 05:12
What is Regulus? The brightest star in the constellation Leo. About its features and location in the sky, we will tell further. Last modified: 2023-12-17 05:12
Recently, the theory of physics has significantly expanded its boundaries. If earlier within the framework of this subject everything that was recorded was reflected in practice, now the situation has changed radically. Modern physicists are talking about incredible things that turn the usual way of life and make us completely reassess reality. Last modified: 2023-12-17 05:12
What is RAE? What does this organization do? What else is the significance for Russian science? Together we will seek answers to these questions. Last modified: 2023-12-17 05:12
Piezoelectric transducer accumulates mechanical stress and outputs it into an electrical charge, some of these devices are used as an alternative energy source. Last modified: 2023-12-17 05:12
Every day people are faced with the use of electronic devices. Without them, modern life is impossible. After all, we are talking about a TV, radio, computer, telephone, multicooker and so on. Last modified: 2023-12-17 05:12
Why do you think people like Indian movies? Because of the deep philosophical meaning? Or maybe the global problems of mankind are discussed there? No matter how! For about two hours, you watch the main characters suffer, cry, laugh, sing and dance. The plot of the film, as a rule, is straightforward: he and she, love, hatred, deceit, and in the end - the triumph of justice, or vice versa - a fatal death to the music … From the point of view of an intellectual - it makes no sense, but people in the hall are crying. Last modified: 2023-12-17 05:12
One of the main hydrological indicators is the slope of the river. How to calculate it correctly? You will learn about this from our article. Last modified: 2023-12-17 05:12
Concentration gradient is a value that indicates the amount of solute in the solvent and how this amount changes in time and space. Last modified: 2023-12-17 05:12
Ammonia is a gas with excellent solubility in water: up to 700 liters of a gaseous compound can be dissolved in one liter of it. As a result, not only ammonia hydrate is formed, but also particles of hydroxyl groups, as well as ammonium. This is an ion resulting from the interaction of gas molecules and hydrogen protons split off from water. In our article, we will consider its properties and application in industry, medicine and everyday life. Last modified: 2023-12-17 05:12
To determine the hardness of a material, the invention of the Swedish engineer Brinell is most often used - a method that measures surface properties and gives additional characteristics of polymer metals. Last modified: 2023-12-17 05:12
The middle of the last century marked the birth of a new era in the history of mankind. The Stone Age was once replaced by the Bronze Age, then the periods of the reign of iron, steam and electricity followed in succession. We are now at the very beginning of the era of the atom. Even the most superficial knowledge in the field of the structure of the atomic nucleus opens up unprecedented horizons for mankind. What do we know about the atomic nucleus? The fact that it makes up 99.99% of the mass of the entire atom and consists of particles that are commonly called nucleons. Last modified: 2023-12-17 05:12
Acceleration is a familiar word. Not an engineer, it most often comes across in news articles and issues. Acceleration of development, cooperation and other social processes. The original meaning of this word is connected with physical phenomena. How to find the acceleration of a moving body, or acceleration as an indicator of the car's power? Could it have other meanings?. Last modified: 2023-12-17 05:12
What force makes all bodies move towards the surface of the planet, according to what laws does this movement occur? Let's try to answer these questions. And if this fall occurs on Mars, on other bodies of the solar system?. Last modified: 2023-12-17 05:12
Unfortunately, man has not yet invented reliable and sufficiently affordable means of communication with other planets of the solar system. Any flights beyond the earth's atmosphere require enormous energy costs. How do gravitational maneuvers help to explore space and what is it?. Last modified: 2023-12-17 05:12
Such terms as: "zenith", "horizon", "north", "south", "west", "east" are well known to most people. But what is "nadir"? It is unlikely that ten out of ten polled compatriots will confidently answer this question. Last modified: 2023-12-17 05:12
City dwellers are used to determining their location by a regular postal address: city, street, house, apartment. Active people, mushroom pickers, fishermen, hunters and tourists are increasingly using GPS coordinates. Fortunately, many modern gadgets allow you to "score" a point on the map, save it, transfer it to a friend via a GSM signal, etc. And what coordinates do astronomers use to determine the location of stars, planets and other cosmic bodies in the sky?. Last modified: 2023-12-17 05:12
What is the heat of vaporization, how much energy does it take to turn a pot of water into steam?. Last modified: 2023-12-17 05:12
Images taken from the Voyager 2 satellite back in the distant 90s showed us amazing results. The mysterious greenish atmosphere of Uranus is all that this planet is made of, with the exception of a tiny stone-metal core. Last modified: 2023-12-17 05:12
The star system of the Milky Way galaxy, in which we live, includes the Sun and 8 other planets revolving around it. First of all, scientists are interested in studying the planets closest to the Earth. However, the satellites of the planets are also very interesting. What is a satellite? What are their types? Why are they so interesting for science?. Last modified: 2023-12-17 05:12
In this article we will tell you about one of the elements of higher mathematics - series, in particular, about the series of Taylor and Maclaurin. Let us expand the most used functions. Last modified: 2023-12-17 05:12
If the thermonuclear bomb had not been invented at one time, world states would have fought each other for nothing. Thanks to the creation of this awesome weapon, humanity both protected itself from major military conflicts and gave itself the opportunity of complete self-destruction. Last modified: 2023-12-17 05:12
It can be simple or complex. An example of a simple cycle is chlorella, which reproduces by spores. Developing, this green algae becomes a receptacle for 4-8 autospores, which grow inside the mother's body and become covered with their own shell. Last modified: 2023-12-17 05:12
Corrosion rate: classification of indicators, basic calculation formulas for its determination. Factors affecting the intensity of destruction of the material. Their consideration in the design of metal structures. Methods for assessing the corrosion rate. Last modified: 2023-12-17 05:12
To date, there are several different systems for measuring the weight of precious and precious metals. We are used to using grams. And on the stock exchanges and abroad, the troy ounce is quite often used. This weight system is perhaps the oldest and at the same time accurate to date. What it is, how it differs from the usual one and how to translate it into the grams we are used to - this is exactly what will be discussed in this article. Last modified: 2023-12-17 05:12
Analytical research methods are the finding of exact quantitative relationships between a number of dependent factors. Last modified: 2023-12-17 05:12
Pathological types of breathing are a condition characterized by a group rhythm, often accompanied by periodic stops or intermittent breaths. Last modified: 2024-01-18 03:01
According to one of the versions of the ancient Greek myth, Scorpio was placed in heaven for … the murder of the famous hunter Orion, who did not please the goddess of the Earth, Gaia. It is difficult to observe this constellation in the northern hemisphere - it barely rises above the horizon. But in the southern hemisphere, Scorpio appears in all its radiant beauty. Last modified: 2023-12-17 05:12
Many designers, planners, artists and all those whose activities are at least slightly related to color, are of great help to Itten's color wheels, which make it easy to achieve harmony of all kinds of combinations of shades. Last modified: 2023-12-17 05:12
XVI-XVII centuries are rightly called by many the “golden age of physics”. It was during this period that the foundations were largely laid, without which the further development of this science would be simply unthinkable. Standing apart in a whole series of discoveries is the law of universal gravitation, the final formulation of which belongs to the outstanding English scientist Isaac Newton. Last modified: 2023-12-17 05:12
The origin of the science of substances can be attributed to the era of antiquity. The ancient Greeks knew seven metals and several other alloys. Gold, silver, copper, tin, lead, iron and mercury were the substances that were known at that time. The history of chemistry began with practical knowledge. Last modified: 2023-12-17 05:12
What are useful inventions? How to get a patent for them? In what industries can they be used? Together we will look for answers to the questions posed. Last modified: 2023-12-17 05:12
As you know, the XXI century is called the century of information technology. Indeed, modern man operates with different methods of obtaining and processing information. Analytics takes a special place in the process of using information. Last modified: 2023-12-17 05:12
Defining who an astrologer is is pretty easy to give. First of all, this is a person who has knowledge of the craft, after which his profession is named, and who understands well that his central principle is a reflection of the unity of the individual and the cosmos, all parts of which are interconnected with each other. Last modified: 2023-12-17 05:12
What is a cycle? What are the types of cycles? How to calculate the cycle and what is the duration of the operating cycle? How to calculate the duration of the production cycle? What are the stages of the life cycle of an organization and a product? All these questions can be answered in this article. Last modified: 2023-12-17 05:12
Formation of ZUNov (knowledge, skills) in students is the goal of any teacher and an indicator of his pedagogical skill. And if everything is clear with knowledge, then specialists have a lot of questions and disagreements about the skills and abilities. Let's try to solve some of them. Last modified: 2023-12-17 05:12
The family is not a frozen structure, as in the process of its development it goes through various crisis situations. However, in any of them it should remain the main socializing body for the younger generation. What conditions must be observed in this case, we will consider in our article. Last modified: 2023-12-17 05:12
All dictionaries are unanimous in defining knowledge as a reflection of reality in the human mind. Is knowledge needed in such an "intangible" area as pedagogy? Yes, we need! Because in the hands of the teacher is not only the fate of the pupils, but also the future of mankind. Without knowledge there is no progress. Last modified: 2023-12-17 05:12