When studying absolutely any spatial figure, it is important to know how to calculate its volume. This article provides a formula for the volume of a regular quadrangular pyramid, and also shows how this formula should be used using the example of solving problems. Last modified: 2025-01-23 12:01
Science
Scientists have identified several points that will be fatal for humanity in the future. Among them, the problem of the growth of the population of the Earth has become widely known. It is believed that the resources of the planet are not infinite. One day they will end and humanity will be doomed to extinction if a new planet suitable for life is not found. Last modified: 2025-01-23 12:01
The use of simple mechanisms in physics allows you to study various natural processes and laws. One of these mechanisms is the Atwood machine. Let's consider in the article what it is, what it is used for, and what formulas describe the principle of its operation. Last modified: 2025-06-01 07:06
To be able to solve various problems on the movement of bodies in physics, you need to know the definitions of physical quantities, as well as the formulas by which they are related. This article will address the questions of what is tangential velocity, what is full acceleration and what components make it up. Last modified: 2025-01-23 12:01
When viewed with the naked eye, the constellation Pump is unlikely to look spectacular to the observer. However, due to the presence of a number of remarkable stars and galaxies in it, astronomy lovers do not ignore this region of the southern sky with a somewhat strange name at first glance. Last modified: 2025-01-23 12:01
Composed of methane, marsh gas is known to be explosive. It is produced as a result of organic reactions under the water column, where silt and other plants decompose. Last modified: 2025-01-23 12:01
The discovery and exploration of Antarctica is one of the greatest events in history. The discovery of the sixth continent and the further study of its features gave mankind a lot of opportunities to expand their knowledge of the world around them. The most large-scale scientific activity was carried out in Antarctica in the middle of the last century, but even today the icy continent is not deprived of attention. Last modified: 2025-01-23 12:01
A depleted uranium projectile punches a hole in its target on impact, burning up and disintegrating into tiny particles that propagate through the atmosphere. When inhaled or ingested, they enter the human body, causing catastrophic damage due to internal exposure and heavy metal poisoning. Radioactive contamination will last for centuries, turning the local population into hibakusha - victims of a nuclear bombing. Last modified: 2025-01-23 12:01
Heat treatment of steel is the most powerful mechanism for influencing its structure and properties. It is based on modifications of crystal lattices depending on the game of temperatures. Last modified: 2025-01-23 12:01
Stocks of nuclear weapons around the world are amazing. Officially, nine countries have nuclear missiles of varying power and range. Therefore, it will be useful for every person to know about the consequences of a nuclear explosion and the rules of action in them. Last modified: 2025-01-23 12:01
The first explosive device was tested in the summer of 1945 in America. By today's standards, the bomb had little power, but at that time the resulting effect exceeded all expectations. The force of the explosion and the impact on the surrounding area turned out to be colossal. Last modified: 2025-01-23 12:01
For many people it was and remains a mystery why children learn to speak their native language so quickly. Much less effort is required for them to master foreign speech. Last modified: 2025-01-23 12:01
Let's reveal the relationship between applied and fundamental science. Let's determine the value of the theoretical basis for conducting practical research, using them in various areas of human life. Last modified: 2025-01-23 12:01
Have you ever wondered how many living organisms there are on the planet?! After all, they all need to inhale oxygen in order to generate energy and exhale carbon dioxide. The savior of all living beings in this situation is photosynthesis. Last modified: 2025-06-01 07:06
What are geographic phenomena? What are the geographic phenomena in nature? How often can they be found and what is the reason for their occurrence?. Last modified: 2025-01-23 12:01
What is the name of the science that studies tissues, what is its history? What exactly is the object of study and what are tissues and organs? Is histology useful in treating a person?. Last modified: 2025-01-23 12:01
Yuri Kondratyuk was a scientist ahead of his time. His theory of interplanetary travel was confirmed twenty years after the death of an outstanding explorer. Last modified: 2025-01-23 12:01
Russian scientific traditions have had a significant impact on the whole world. It is worth knowing the scientists who have made the greatest contribution. Last modified: 2025-01-23 12:01
The Russian Federation differs from other countries of the world not only in its vast territory and the number of autonomous republics, but also in the number of ethnic groups of its population. Last modified: 2025-01-23 12:01
The article talks about what vivisection is, when such operations first began to be carried out, and why they are needed. Last modified: 2025-01-23 12:01
The article talks about what a waterline is, what it is for, and when the law on the mandatory use of one of its varieties was first introduced. Last modified: 2025-01-23 12:01
The article describes what an electromagnet is, on what principle it is arranged, and in what areas this type of magnet is used. Last modified: 2025-01-23 12:01
The article talks about what a solar prominence is, how it can be dangerous for people and how it is classified. Last modified: 2025-01-23 12:01
The article tells about what etymology is, what this science does and what methods it uses in its work. Last modified: 2025-01-23 12:01
The article talks about how astronauts go to the toilet in space and take a shower, and also on what principle the space sewerage and water supply are arranged. Last modified: 2025-01-23 12:01
The article tells about who discovered the phenomenon of radioactivity, when it happened and under what circumstances. Last modified: 2025-01-23 12:01
Being the main components of the cell nucleus, chromosomes were discovered in the 19th century by several scientists at once. The Russian biologist I. D. Chistyakov studied their process of mitosis (cell division), the German anatomist Waldeyer discovered them during the preparation of histological preparations and called them chromosomes, that is, staining bodies for the rapid reaction of these structures when interacting with the organic dye fuchsin. Last modified: 2025-01-23 12:01
The opaque (black) box model is considered the simplest in systemology. Meanwhile, when it is created, various difficulties often arise. They are determined mainly by the variety of possible options for establishing links between the object and the environment in which it is located. Last modified: 2025-01-23 12:01
Structure, functions, concept and other key features of the mechanism of the state on the example of the Russian Federation. Last modified: 2025-01-23 12:01
Description of the characteristics and operation of radio waves. In what areas are they used and what types exist. Last modified: 2025-01-23 12:01
The most important and most famous missiles produced by the Soviet Union came into life with the help of the general designer, whose name went down in history along with the most important for the country. This is Academician Glushko Valentin Petrovich, who created many dozens of the most powerful jet engines. Last modified: 2025-01-23 12:01
The most mysterious of all vitamins is vitamin E. First of all, its uniqueness lies in the fact that it does not have the same molecules. It also has a wide variety of shapes. Scientists have identified eight varieties so far, calling them tocopherols. In the article, we will consider what a mixture of tocopherols is and how the vitamin affects the human body. Last modified: 2025-01-23 12:01
Microbiology plays a huge role in the development of mankind. The formation of science began in the 5th-6th century BC. e. Even then it was assumed that many diseases are caused by invisible living beings. A brief history of the development of microbiology, which is described in our article, will allow us to find out how science was formed. Last modified: 2025-01-23 12:01
The Earth's Radiation Belt (ERB), or the Van Allen belt, is the region of the nearest outer space near our planet, which looks like a ring, in which there are giant flows of electrons and protons. The earth holds them with a dipole magnetic field. Last modified: 2025-01-23 12:01
Magnetic fluid is a unique man-made miracle, the brainchild of technological progress and scientific thought of the twentieth century. Unlike the vast majority of inventions of human genius, such liquid substances, with pronounced magnetic properties, have no analogues in nature. With the rapid development of technology, characteristic of our time, there are more and more areas of application for substances with such unusual properties. Last modified: 2025-01-23 12:01
Aircraft designer Petlyakov - an outstanding Soviet design engineer who built many aircraft. We will talk about his difficult fate, achievements and awards in the article. Last modified: 2025-01-23 12:01
The density of potatoes depends on many indicators: potato varieties, germination conditions, soil characteristics. Density affects the taste of potatoes, so this parameter is an important value. Last modified: 2025-01-23 12:01
People get to know this word quite early. For example, like this: “Look how that boy at the next table deftly eats his porridge, and it grows in your plate.” Then such phrases haunt a person all his life, and they are spoken not only by parents, but in general by all those who have power. We consider the noun "opposition", and it will be at least entertaining. Last modified: 2025-01-23 12:01
It's hard to decide what to do in morally ambiguous situations. Especially for these cases, some universities have the subject “deontology” in the program. This is a science that studies the area of duty and moral correctness of behavior in various situations. Many solutions have already been invented long before us, but it must be remembered that the responsibility still lies with us, and not with abstract rules. Last modified: 2025-01-23 12:01
The value of metals is directly determined by their chemical and physical properties. In the case of such an indicator as electrical conductivity, this relationship is not so straightforward. The most electrically conductive metal, if measured at room temperature (+20 ° C), is silver. Last modified: 2025-06-01 07:06