Science

Whoever invented the telescope undoubtedly deserves respect and great gratitude from all modern astronomers. This is one of the greatest discoveries in history. The telescope made it possible to study near space and learn a lot about the structure of the universe. Last modified: 2025-01-23 12:01

The magnetic moment of an atom is the main physical vector quantity that characterizes the magnetic properties of any substance. The source of the formation of magnetism, according to the classical electromagnetic theory, are microcurrents arising from the movement of an electron in orbit. The magnetic moment is an indispensable property of all elementary particles, nuclei, atomic electron shells and molecules without exception. Last modified: 2025-01-23 12:01

The skeletons of different animals are different from each other. Their structure largely depends on the habitat and lifestyle of a particular organism. What do animal skeletons have in common? What differences exist? How is the human skeleton different from the structure of other mammals?. Last modified: 2025-01-23 12:01

When theories of evolution appeared, suggesting the initial link in the origin of Homo sapiens in primates, they were met with incredulity, and more often with hostility. Ancient monkeys, located at the very beginning of the pedigree of some English lord, were perceived at best with humor. Today, science has identified the direct ancestors of our species, who lived more than 25 million years ago. Last modified: 2025-01-23 12:01

Sir Andrey Konstantinovich Geim is a Fellow of the Royal Society, fellow of the University of Manchester and a Russian-born British-Dutch physicist. Together with Konstantin Novoselov, he was awarded the Nobel Prize in Physics in 2010 for his work on graphene. He is currently Regius Professor and Director of the Center for MesoScience and Nanotechnology at the University of Manchester. Last modified: 2025-01-23 12:01

This article describes the function and structure of the intestine, its diseases are considered. And also here you can find out the answer to the question: how long is the intestine in an adult?. Last modified: 2025-01-23 12:01

In the method of statistical groupings, the totality of the studied phenomena is divided into classes and subclasses, which have a homogeneous structure according to certain characteristics. Each such division is described by a system of statistical indicators. Grouped data can be presented in tables. Last modified: 2025-01-23 12:01

Albert Einstein is probably known to every inhabitant of our planet. It is known thanks to the famous formula for the connection between mass and energy. However, he did not receive the Nobel Prize for it. In this article, we will consider two formulas of Einstein, which turned the physical ideas about the world around us at the beginning of the 20th century. Last modified: 2025-01-23 12:01

This seemingly simple inequality reflects the natural limit to which nature can simultaneously answer some of our questions. The ratio, mutually linking the uncertainties of dynamic parameters, is a natural consequence of the dual - corpuscular-wave - nature of matter. Last modified: 2025-01-23 12:01

The article discusses ballistic coefficients, a table, various methods, historical inventions, as well as the first test runs and bullet range. Last modified: 2025-01-23 12:01

No one will deny that the reality around us is harmonious and perfect. It doesn’t matter what or who a person believes in, but around him he sees not only beauty and diversity, but also a harmonious order in which there is no place for chaos. Especially clearly clear expediency is manifested in the world of living beings. Everything weak, ugly, incapable of reproducing he althy offspring is swept away by the action of evolutionary factors, primarily natural selection. Last modified: 2025-01-23 12:01

In nature, there are many very interesting devices that help creatures live. They are found in both animals and plants, fungi, bacteria and others. It's amazing how inventive and unique the natural environment is! One has only to recall the diversity of species of various living beings, as this uniqueness becomes apparent. Last modified: 2025-01-23 12:01

In the human body, more than 200 types of cells have been isolated, each of which has the same hereditary code. All of them developed first from a unicellular and then a multicellular embryo, which a little later divided into three germ layers. From each of its parts, body tissues have developed, where approximately the same type of cells are located. At the same time, almost all of them developed from the same group of predecessors. This process is called cell differentiation. Last modified: 2025-01-23 12:01

The first and only museum in Russia is dedicated to traumatology and orthopedics, literally hour by hour allowing you to establish the chronology of the development of events that made the Ilizarov Center a stronghold of scientific activity and new treatment technologies. All the development of the famous orthopedic clinic at a glance. Last modified: 2025-01-23 12:01

From the school chemistry course we know that if we take one mole of any substance, then it will contain 6.02214084(18)•10^23 atoms or other structural elements (molecules, ions, etc.). For convenience, the Avogadro number is usually written in this form: 6.02 • 10^23. Last modified: 2025-01-23 12:01

One of the small planets in the solar system we are going to talk about now. This is the planet Mercury, closest to the Sun. What mystery do you think this celestial body contains?. Last modified: 2025-01-23 12:01

Knowing your IQ (aikyu) is considered important for a modern person. Dozens of tests and techniques enable us to lift the veil of our own abilities. Let's talk in our article what aikyu is, what are the ways to study this indicator of human thinking, who helped us learn more about our brain. Last modified: 2025-01-23 12:01

In our article we touched upon an extraordinary topic - highly efficient memorization of hard-to-remember information. A mnemonic is a person who has mastered a special memory technique. Last modified: 2025-01-23 12:01

In our article we are going to consider the question: "What are the main characteristics of society?" - as well as some related aspects. They will help us to operate this concept more consciously and in general will be useful for expanding knowledge in this area. Last modified: 2025-01-23 12:01

The world of fish is very diverse, as is their habitat. They live in oceans, seas, rivers and lakes; they can exist both in warm tropical regions and in the cold waters of the Arctic Ocean. How are they different from other animals? What species and families of fish are there?. Last modified: 2025-01-23 12:01

Volume is a characteristic of any figure that has non-zero dimensions in all three dimensions of space. In this article, from the point of view of stereometry (the geometry of spatial figures), we will consider the figure of a prism and show how to find the volumes of prisms of various types. Last modified: 2025-01-23 12:01

Nature always solves problems in the simplest and most elegant way you can think of. The golden ratio, or, in other words, the Fibonacci spiral, is a clear reflection of the genius of these decisions. Traces of this proportion are found in ancient buildings and great paintings, the human body and celestial objects. Last modified: 2025-01-23 12:01

Why the fox was called a fox. Why chanterelles are not wormy and are poisonous mushrooms wormy. Where and when is the best time to collect chanterelles. Signs of mushroom places. The healing properties of chanterelles and how they are related to why chanterelles are never wormy. What do the "twins" of the common chanterelle look like and can they be eaten. Last modified: 2025-01-23 12:01

The article describes the main parameters of the Earth's satellite: the size of the Moon, its volume and mass. As well as surface features, comparison with other objects of the solar system. Last modified: 2025-01-23 12:01

More than other space objects since ancient times, the Moon has attracted man. Its reverse side, hidden from the earthly observer, gave rise to many fantasies and legends and was associated with everything mysterious and incomprehensible. Last modified: 2025-01-23 12:01

A gravitational anomaly occurs both on the surface of the Earth and in its bowels. An important external factor in this case is the relief. As for the underground causes, they include the movements of the layers vertically and horizontally, as well as changes in the density composition of these layers. Such a phenomenon as a gravitational anomaly is of great importance in geology. Last modified: 2025-01-23 12:01

People have always been interested in space. The moon, being closest to our planet, has become the only celestial body that has been visited by man. How did the research of our satellite begin, and who won the palm in landing on the moon?. Last modified: 2025-01-23 12:01

What is the connection between music and exact sciences, like mathematics? People have been asking this question since ancient times. Modern scientists have proven that the mental processes that occur when solving mathematical problems are similar to those that occur during the performance of musical works and the study of subjects of the musical-theoretical cycle. Last modified: 2025-01-23 12:01

Disputes between idealists and materialists touch on many topics. But one of them literally pits both sides, causing a huge amount of raging emotions. This is the problem of progress. A very abstract noun causes almost holy wars. Is progress what it seems, or is it not? The very formulation of such a question is very, very difficult to understand. Let's dot all the vowels i that do not exist in Russian. Last modified: 2025-01-23 12:01

Semenov Nikolai - a famous chemist of the USSR, who is the author of many valuable theories and works. Last modified: 2025-01-23 12:01

Who is the laureate? This is a person who has been awarded a national or international award. The article lists the most famous awards of the second type. And also a list of winners of the award, established by the Swedish millionaire and researcher Alfred Nobel. Last modified: 2025-01-23 12:01

Modern relations in society are inconceivable without the establishment of certain norms of interaction, which sometimes take very complex forms. And therefore, quite naturally, the question arises of what is a right and to what extent is it necessary?. Last modified: 2025-01-23 12:01

The word collectives in Latin means "crowd", "gathering", "group". Today, a team is understood as a community of people who have common goals, orientations, traditions, united in joint activities. Last modified: 2025-01-23 12:01

Iron is an element that is familiar to every person on our planet. And there is nothing surprising in this. Indeed, in terms of its content in the earth's crust (up to 5%), this component is the most common. However, only a fortieth of these reserves can be found in deposits suitable for development. The main ore minerals of iron are siderite, brown iron ore, hematite and magnetite. Last modified: 2025-01-23 12:01

The ability of cells to respond to stimuli from the outside world is the main criterion of a living organism. The structural elements of the nervous tissue - the neurons of mammals and humans, are able to transform stimuli (light, smell, sound waves) into the process of excitation. Its end result is an adequate reaction of the body in response to various environmental influences. In this article, we will study what function the neurons of the brain and peripheral parts of the nervous system perform, and also consider. Last modified: 2025-01-23 12:01

Increasingly, we hear the expression "Boolean algebra". Perhaps it's time to understand the role of man in creating robots and the ability of machines to solve not only mathematical, but also logical problems. Last modified: 2025-01-23 12:01

An X-ray laser is a device that uses stimulated emission to generate or amplify electromagnetic radiation in the near X-ray or extreme ultraviolet region of the spectrum, i.e. typically on the order of several tens of nanometers (nm) wavelength. Last modified: 2025-01-23 12:01

Everyone feels the passage of time. Stars and planets are moving in the universe, the hands of the clock are monotonously beating their rhythm, each of us is slowly moving forward along the corridor of time. Realizing their dependence on it, people have come up with many ways and number systems that help to streamline and calculate it. Various sciences, such as mathematics, physics, chemistry and history, could hardly do without such an exact science as chronology. Last modified: 2025-01-23 12:01

Space is fraught with many mysteries. People have long been interested in messengers from above. When a falling meteor (shooting star) appears, people make a wish. What are the messengers of the sky - comets and meteorites - really?. Last modified: 2025-01-23 12:01

What is an organelle? What are they like? How is each of them arranged and what functions does it perform in the cell?. Last modified: 2025-01-23 12:01