Science 2025, January

What happens when you cross a leech with a spider? Surprisingly, such an unusual animal actually exists in nature. The ability to throw out a kind of web from the body in order to capture prey is possessed by nemertine worms. It is about them that we will talk in the presented material. Last modified: 2025-01-10 15:01

Methods of titrimetric analysis are necessary to establish the qualitative and quantitative composition of the desired substance or ion. Let's analyze their varieties, main characteristics. Last modified: 2025-01-10 15:01

Mars and Venus are similar to the Earth, so scientists do not lose hope of finding life on neighboring planets. For Mars, this is more likely. The Curiosity rover was able to find out for sure that rivers once flowed there, which means that there was an atmosphere. Perhaps life on Mars existed long before Earth or will be possible after terraforming (changes in climatic conditions). This requires the presence of a magnetic field on Mars. Last modified: 2025-01-10 15:01

Geoid is a model of the Earth's figure (i.e., its analogue in size and shape), which coincides with the mean sea level, and in continental regions is determined by the spirit level. Serves as a reference surface from which topographic heights and ocean depths are measured. Last modified: 2025-01-10 15:01

By the end of the 19th century, organic chemistry was formed as a science. Interesting facts will help you better understand the world around you and find out how new scientific discoveries were made. Last modified: 2025-01-10 15:01

Habitat is the natural environment in which an organism lives. Animals require different amounts of space. Habitats are scattered over the vast territory of the planet Earth. Each is characterized by a certain biological diversity of the animal and plant world, whose representatives unevenly populate our planet. The air-terrestrial habitat includes areas of the earth's surface such as mountains, savannas, forests, tundra, polar ice and others. Last modified: 2025-01-10 15:01

The very first impression is formed when looking around the face. Men are especially attracted to beautiful, well-defined female lips. Women are not indifferent to men with a strong-willed chin and sensual lips. Physiognomy tries to study facial features that can attract people or repel them. She claims that the inner world of a person is a direct reflection of his appearance. Last modified: 2025-01-10 15:01

All contemporaries have long known that horrendous arms race organized by the Americans and the Soviet Union after the end of World War II. And the main object in this action was space, which is used far from being for good and peaceful purposes. So, by the end of the fifties of the last century, all the world's media were trumpeting not only about satellite launches, but about thundered nuclear explosions in outer space closest to the Earth. Last modified: 2025-01-10 15:01

Can you name the most fusible metal? Hint: In its normal state, it is liquid, silvery and highly poisonous. Guessed? In any case, let's find out more about him. Last modified: 2025-01-10 15:01

Many are interested in the question: do fish feel pain. It is especially relevant for fans of fishing who would like to know how much their passion causes suffering in living beings. We invite you to familiarize yourself. Last modified: 2025-01-10 15:01

What is a scale? This is such a sign system for which the display is specified. The scale element is assigned to real objects. We can say that the measurement scale is a graduated ruler, on which the values of any quantity (distance, temperature, pressure) are plotted. The problem associated with ensuring high quality products is inextricably linked to the quality of measurements. Last modified: 2025-01-10 15:01

Chronostratigraphic classification has a common goal. It consists in the systematic division of the sequence of layers of the planet into subdivisions. They have their own names that correspond to intervals of geological time. Last modified: 2025-01-10 15:01

Most of the enzymes for the implementation of catalytic activity needs auxiliary elements - cofactors. These substances are non-protein in nature and are not always a structural part of the enzyme molecule. The complex of a protein and a cofactor is called a holoenzyme, and only the protein part is called an apoenzyme. A cofactor that is permanently part of an enzyme and is linked to it by covalent bonds is called a prosthetic group. Last modified: 2025-01-10 15:01

The scientific complex of Russia is now going through a difficult period. Since the era of perestroika, its structures have been continuously reorganized, abolished, reformed, optimized - depending on the current problems in the country and society and the competence of those leaders who are called upon to solve these problems. Last modified: 2025-01-10 15:01

As people explored the cosmos, the thought of finding alien life became more and more intriguing. With the development of technology, it became possible to study the planets closest to the Earth. One of them was Mars - the fourth planet in the solar system, surprisingly similar to Earth, but as if outdated and already cooled down. Last modified: 2025-01-10 15:01

Social communities of people were considered differently by philosophers at different stages of human development. In the 19th century, class theory was very popular. This concept called classes the main social groups. They, from her point of view, determined the course of history. Last modified: 2025-01-10 15:01

Organic life in the process of evolution has adapted to possible fluctuations in living conditions. It is this adaptability of the plant and animal world that allows you to maintain viability and continue to exist. Last modified: 2025-01-10 15:01

When and why was the Abel Prize founded? Who has been awarded this award over the years? Information - in the article. Last modified: 2025-01-10 15:01

The 21st century is the century of radio electronics, the atom, space exploration and ultrasound. The science of ultrasound is relatively young today. At the end of the 19th century, P. N. Lebedev, a Russian physiologist, conducted his first studies. After that, many eminent scientists began to study ultrasound. Last modified: 2025-01-10 15:01

General Savin Alexey Yurievich - head of the Soviet Brain Wars program. With his participation, they searched, found and educated people with exceptional abilities, came up with a technique for making a genius out of an average person. Last modified: 2025-01-10 15:01

One of the most amazing and mysterious planets of the solar system - Mercury. Even more surprisingly, the diameter of Mercury has decreased and, quite possibly, will continue to decrease in the future. Last modified: 2025-01-10 15:01

Wilhelm Schickard was a German astronomer, mathematician and cartographer of the early 17th century. In 1623 he invented one of the first calculating machines. He proposed to Kepler the mechanical means for calculating ephemerides developed by him and contributed to improving the accuracy of maps. Last modified: 2025-01-10 15:01

In our article we will look at what an analyzer is. Every second a person receives information from the environment. He is so accustomed to this that he does not even think about the mechanisms of its receipt, analysis, formation of a response. It turns out that complex systems are responsible for the implementation of this function. Last modified: 2025-01-10 15:01

For many years, humanity cannot unequivocally answer the question of what is the impact of the parade of planets on human he alth and the well-being of the inhabitants of the Earth. The fact is that the science of astrology is very closely intertwined with various beliefs and Vedic practices. Many false prophets and soothsayers intimidate people in every possible way with terrible predictions about the end of the world, associating it with the alignment of the planets. Last modified: 2025-01-10 15:01

The impact of various chemicals on the human body is ambiguous. Most of the known compounds are either neutral or play a positive role in human life. But there is a group of substances that pose a serious threat to he alth. Last modified: 2025-01-10 15:01

Coagulation of water: the physical basis of the process, the most common coagulants. Purpose of technology and factors affecting its effectiveness. Stages of the technological process and the equipment used. Combination with other types of impact on water and improving the quality of its purification. Last modified: 2025-01-10 15:01

Tetrahedron in Greek means "tetrahedron". This geometric figure has four faces, four vertices and six edges. The edges are triangles. Basically, a tetrahedron is a triangular pyramid. The first mention of polyhedra appeared long before the existence of Plato. Last modified: 2025-01-10 15:01

Insects are a large group representing the phylum Arthropoda. They have distinctive features relating not only to structural features, but also to development. In our article, we will consider the process of incomplete transformation and the insects for which it is characteristic. Last modified: 2025-01-10 15:01

The article provides examples of how physics helps in medicine to treat people. Consider examples of familiar devices and equipment. Let us explain what is the essence and purpose of devices. Last modified: 2025-01-10 15:01

This amazing animal lives exclusively in fresh water, leads a predatory or parasitic lifestyle, is widely used in medicine. It's about a leech. The structure of the body, the features of life and the beneficial properties of this organism will be discussed in our article. Last modified: 2025-01-10 15:01

Styrene-butadiene rubber is a raw material for rubber production. Consider the main features of its structure, scope. Last modified: 2025-01-10 15:01

Society and a person have always been in the sphere of interests of the latter, and public consciousness has always been a reality and it has always been interested in a person, his perception, thinking and behavior. The struggle for a place under the sun occupied the minds of scientists for some time, but in the coherent system of sciences, the social and humanitarian sciences have taken their rightful place and are rightfully considered fundamental. Last modified: 2025-01-10 15:01

Often this cleaning method is used to obtain high-grade silver. In general, the procedure is no different from similar methods carried out for other noble, ferrous or non-ferrous metals. For example, for gold or platinum metals, the ways of silver refining are valid. Last modified: 2025-01-10 15:01

There are more than 40 thousand species of spiders in the world. They are distributed in almost all corners of our planet. Green spider is a generalized informal name for spiders with a characteristic color. What are they like? Learn more about it. Last modified: 2025-01-10 15:01

When studying the properties of figures in three-dimensional space within the framework of stereometry, one often has to solve problems to determine the volume and surface area. In this article, we will show how to calculate the volume and lateral surface area for a truncated pyramid using the well-known formulas. Last modified: 2025-01-10 15:01

Phase equilibria, Clapeyron equation, thermodynamics, formulas, interesting examples and facts are considered, as well as proofs of theorems and hypotheses. Last modified: 2025-01-10 15:01

Radiolarians, whose representatives we will consider in our article, are the simplest animals. Despite the primitive structure, they are the champions in the number of chromosomes among all living organisms. Last modified: 2025-01-10 15:01

In higher mathematics, such a concept as a transposed matrix is studied. It should be noted that many people think that this is a rather complicated subject that cannot be mastered. However, it is not. In order to understand exactly how such an easy operation is carried out, it is only necessary to familiarize yourself a little with the basic concept - the matrix. The topic can be understood by any student if he takes the time to study it. Last modified: 2025-01-10 15:01

Information entropy is the average rate at which information is created by a stochastic data source. This is an important concept in modern information theory, physics and computer science. IE is indirectly related to the concept of entropy from physics. Last modified: 2025-01-10 15:01

People who managed to return from the other world tell unusual things. How can one evaluate the afterlife with a scientific eye?. Last modified: 2025-01-10 15:01