Science

The moon doesn't rotate on its axis, does it? For many years, scientists have been arguing on this topic, but they do not find an answer that would satisfy everyone. Everyone puts forward their own hypotheses and tries to prove them. There is currently a controversy regarding this issue. Last modified: 2025-01-23 12:01

Personnel management is an important and complex process. The functioning and development of the enterprise depends on how professionally this is done. Management systems help organize this process correctly. Last modified: 2025-01-23 12:01

The question of the origin of the Earth, planets and the solar system as a whole has worried people since ancient times. Myths about the origin of the Earth can be traced among many ancient peoples. Last modified: 2025-01-23 12:01

Irrational behavior is inherent in many personalities. What is this character trait? Why do people allow themselves such behavior? Is it really just a permission, a personal permission to not pay attention to circumstances when making decisions, not to think about their consequences?. Last modified: 2025-01-23 12:01

The constellation Cepheus is not famous for the special expressiveness and visibility of its elements. However, it is of great interest to astronomers, since it is here that non-standard variable stars are located, one of the oldest open clusters and Herschel's Garnet Star, which resembles a drop of blood in its color, and surpasses almost all space objects known today in size. Last modified: 2025-01-23 12:01

The phrases "net weight" and "gross weight" are now firmly established in the Russian language. It is unlikely that anyone does not know what these "aliens" from Italy mean. Last modified: 2025-01-23 12:01

Nitrifying bacteria are classified as chemoautotrophs and are widely distributed in nature. They are found everywhere: in the soil, various substrates, as well as water bodies. The process of their vital activity makes a great contribution to the general nitrogen cycle in nature and in fact can reach enormous proportions. Last modified: 2025-01-23 12:01

Biological oxidation: general concept, stages, types. Oxidative phosphorylation, pyruvate oxidation. Anaerobic oxidation or glycolysis. Types of fermentation. The history of the development of the concept of oxidation. Last modified: 2025-01-23 12:01

The phenomenon of diffraction is characteristic of absolutely any waves, for example, electromagnetic waves or waves on the surface of water. This article talks about the diffraction of sound. The features of this phenomenon are considered, examples of its manifestation in everyday life and human use are given. Last modified: 2025-01-23 12:01

Scientists predict that in a few decades the planet will run out of traditional resources - coal, oil and gas. How will humanity deal with this problem?. Last modified: 2025-01-23 12:01

It is difficult to define only one scientific speci alty to which John D alton can be attributed. One of the most respected and honored scientists of his time was a physicist, chemist, meteorologist. Last modified: 2025-01-23 12:01

The main feature of any sentence is the presence of a grammatical basis, that is, a predicate and a subject or one of them. Last modified: 2025-01-23 12:01

The Boltzmann constant bears the name of the great scientist, physicist and mathematician - Ludwig Boltzmann. The constant defines the relationship between quantities such as temperature and energy. Last modified: 2025-01-23 12:01

The main condition for the life of any organism is the continuous supply of energy, which is spent on various cellular processes. At the same time, a certain part of the nutrient compounds can not be used immediately, but can be converted into reserves. The role of such a reservoir is performed by fats (lipids), consisting of glycerol and fatty acids. The latter are used by the cell as fuel. Fatty acids are oxidized to carbon dioxide and water. Last modified: 2025-01-23 12:01

The discoveries of the outstanding scientist Svante Arrhenius became the basis of modern physical chemistry. The name of this researcher is primarily associated with the theory of electrolytic dissociation, however, this diversified person also de alt with other issues. Thanks to him, the capital of Sweden at the end of the 19th century. revived its glory as a major center of chemical science. Last modified: 2025-01-23 12:01

In recent decades, large volcanic eruptions have become more frequent. This gives food for talk that a certain global cataclysm is approaching, which will lead, if not to the total extinction of all living things, then, in any case, to a significant reduction in populations. Last modified: 2025-01-23 12:01

According to the definition in physics, the concept of "vacuum" implies the absence of any substance and elements of matter in a certain space, in this case one speaks of an absolute vacuum. A partial vacuum is observed when the density of the substance in a given place in space is low. Let's take a closer look at this issue in this article. Last modified: 2025-01-23 12:01

What is the distance from Earth to Saturn and how much time does it take a person to overcome this monstrous number of kilometers?. Last modified: 2025-01-23 12:01

John Glenn, the first American to orbit the Earth, made history for the second time when, at the age of 77, he became the oldest person in space. But before the astronaut was recognized as a national hero, he risked his life more than once for his country. Last modified: 2025-01-23 12:01

As you know, mathematics is the mother of all sciences. And this is no wonder. Since all the exact sciences are focused on calculations. However, this does not mean at all that everything in this kingdom is boring and boring. By no means! Despite the seriousness of the teaching, surprising and interesting facts about mathematics appear. And you can find them almost anywhere in the world. Last modified: 2025-01-23 12:01

Richard Phillips Feynman (years of life - 1918-1988) - an outstanding physicist from the USA. He is one of the founders of such a direction as quantum electrodynamics. Between 1943 and 1945, Richard was involved in the development of the atomic bomb. He also created the path integration method (in 1938), the Feynman diagram method (in 1949). Last modified: 2025-01-23 12:01

Ionic bond - a chemical bond carried out by the electrostatic attraction of ions. It has no direction and saturation. Last modified: 2025-01-23 12:01

Colligative properties of solutions are properties that do not depend on the nature of the solute, but are determined only by the concentration and nature of the solvent. Last modified: 2025-01-23 12:01

One of the most important milestones in the history of the planet is the invention of electricity. It is this discovery that helps to develop our civilization to this day. Electricity is one of the most environmentally friendly types of energy. Who owns the discovery of this phenomenon? How is electricity produced and used? Is it possible to create a galvanic cell yourself?. Last modified: 2025-01-23 12:01

Signal is a material carrier of information and a physical process in nature. Level, value and time as the main parameters of the signals. Relationship between the signal and their spectrum through the Fourier transform. RF and digital signal analyzers. Last modified: 2025-06-01 07:06

There are many hypotheses and theories in geology. Tectonics is a relatively young science, the subject of which is lithospheric plates. Last modified: 2025-01-23 12:01

In 2009, the Kepler astronomical telescope was launched. The planet, the discovery of which is waiting for the whole world, inhabited by life, preferably intelligent. Are scientists' expectations realistic or will they remain just expectations? Perhaps, thanks to the space telescope, we will soon find out about this. Last modified: 2025-01-23 12:01

Rigel is a star that has amazed people with its beauty since ancient times. In Egypt, she was identified with the god of the dead and the patron of the starry sky Sakh, and later with Osiris. Rigel is part of the constellation Orion, one of the most visible celestial drawings. Last modified: 2025-01-23 12:01

The astronomical unit, which has developed in the course of history, is a unit of distance measurement in astronomy - the science of the Universe. It is mainly used to determine the distance between various objects in the solar system, but its value is also used in the study of extrasolar systems. Last modified: 2025-01-23 12:01

Characterization of celestial bodies can be very confusing. Only stars have apparent, absolute magnitude, luminosity and other parameters. We will try to deal with the latter. What is the luminosity of stars? Does it have anything to do with their visibility in the night sky? What is the luminosity of the Sun?. Last modified: 2025-01-23 12:01

Any star - yellow, blue or red - is a hot ball of gas. The modern classification of luminaries is based on several parameters. Last modified: 2025-01-23 12:01

On the outskirts of our star system is the Kuiper belt. It passes beyond the orbit of Neptune, so it was extremely difficult to see anything in this space before. However, since powerful telescopes have appeared at the disposal of man, several discoveries have been made. So, for example, it became known that the trans-Neptunian object is the main unit that makes up the Kuiper belt, the Oort cloud and the scattered disk. It is worth taking a closer look at the bodies rotating in the "backyard" of the solar system. Last modified: 2025-06-01 07:06

Summary of theories about the essence of narratives in various humanitarian fields: in psychology, philology, philosophy, sociology and others. Description of the most significant terms related to the concept of narrative. Last modified: 2025-01-23 12:01

Every parent wants their children to be happy and find their place in life. Additional classes in music, dancing, sports, foreign languages - moms and dads are ready for anything so that their child is a comprehensively educated person. In itself, such zeal is commendable, but if the child does not "draw" on the ideal image? Here you need to look at the inclinations and interests of the baby and develop them. Help in choosing the right one can be provided by Howard Gardner's theory of multiple intelligences. Last modified: 2025-01-23 12:01

Tungsten is a chemical element whose atomic number is 74. This heavy metal, from steel gray to white, is highly durable, which makes it simply irreplaceable in many cases. Last modified: 2025-01-23 12:01

Amphoteric hydroxides are inorganic compounds capable of exhibiting acidic and basic properties depending on the nature of the substance with which they react. Dual properties are shown by metals of group A - Be, Al, Ga, Ge, Sn, etc. and group B - Cr, Mn, Fe, Zn, etc. Last modified: 2025-06-01 07:06

Magnetic field is a very interesting phenomenon. Currently, its properties have found application in many areas. Do you know what is the source of the magnetic field? After reading the article, you will know about it. In addition, we will talk about some facts related to magnetism. Last modified: 2025-01-23 12:01

Everyone knows the fact that a person is almost 80% water. But few people know that our he alth and well-being depend on the quality of this water. Last modified: 2025-06-01 07:06

Many must have often heard the word "ampere", instantly referring this concept to physics. An ampere is a unit of measure for the strength of an electric current. But have you ever wondered why and in whose honor the unit of current strength was named? Today we will present information about the biography of André Marie Ampère, an outstanding physicist and brilliant scientist. Last modified: 2025-01-23 12:01

The snake is the only composite asterism. In the sky, it occupies 23rd place out of 88 constellations in the area of u200bu200bthe observed sky. The brightest star of the Serpent is Unukelhaya. Last modified: 2025-01-23 12:01