Thanks to the spinal nerves, the spinal cord transmits information about the state of the internal and external environment to the brain and vice versa. There is a close connection between the central and peripheral nervous systems, which ensures the work of the whole organism as a whole
Science 2024, November
Many chemical elements have several oxides. And one of them is nitrogen. Today's article will look at five classic nitrogen oxides
What is scale? What is scaling precision? What is graphic fidelity? Communication of these concepts. The use of scale in cartography, design and geodesy, its varieties. Application in photography, design, filming, programming and modeling
The primary body cavity of a roundworm is also called a pseudocoel. She does not have her own epithelial layer, and she looks like a through hole between the muscle mass and the common intestine. All major organs and systems are located in this space. Here is the center of the vital activity of the organism and the entire existence of the nematode
The article is devoted to the granulometric composition of the soil. Various research methods, classification of compositions, etc. are considered
The root performs the most important functions in the plant body. The main ones are fixation in the soil, absorption and conduction of water with substances dissolved in it, as well as vegetative propagation. The possibility of implementing these processes is associated with structural features of various root systems
Plants consist of organs such as vegetative and reproductive. Each of them is responsible for certain functions. Vegetative - for development and nutrition, and the reproductive organs of plants are involved in reproduction. These include flower, seed and fruit. They are responsible for the "birth" of offspring
A feature of double s alts is that they contain two metals at once. Let us analyze the main characteristics of such compounds and their areas of application
Soap formula, chemical basis of structure and production methods. Classification of soap, history of soap making. Do-it-yourself making at home
The classical stage in the development of science is one of the most important eras in history. It falls on the 17th-19th centuries. This is the era of the greatest discoveries and inventions. Largely due to the achievements of scientists, it is considered as a classic stage of science
Radiation units are needed in order to be able to calculate how much energy was absorbed by living or non-living matter during contact with radiation. There are about a dozen different units and their derivatives that describe physical processes
Thermodynamic parameters of the system are necessary to describe the substances that make it up, as well as to identify the potential of the system itself. These parameters are not always unambiguous and are often interpreted quite broadly, as this is the product of the interaction of scientists from different fields of science
Human thought can go so far that it is hard to imagine. The most unexpected discoveries and inventions can completely change the world, turn it upside down, affect every person on the planet. We will consider the most interesting inventions in this article
The Fresnel lens is the light that saves lives. It became a major step in equipping lighthouses, the main navigational aids of their time, with powerful light sources. What is the secret of the special features of the Fresnel lens? What is the scope of these unsurpassed technical devices?
A right triangle is a unique and very interesting figure. Studying the properties of a right triangle is useful not only for scientific purposes, but also in everyday life
The history of trigonometry is inextricably linked with astronomy, because it was to solve the problems of this science that ancient scientists began to study the ratios of various quantities in a triangle
Who is an academician? Is it a title or position? What needs to be done to be called an academician? Academies in Russia and in the world
The Republic of Dagestan, which is part of the Russian Federation, is called a unique constellation of nationalities. There is no dominant people here. And in total, more than a hundred different nationalities live on the territory of a relatively small republic
The spinal cord enters the central nervous system. In the human body, he is responsible for motor reflexes and the transmission of nerve impulses between organs and the brain. The membranes of the spinal cord cover it, providing protection. What features and differences do they have?
The pragmatist approach broke the traditional understanding of truth, because it believed that the veracity of any theory lies in its "capacity for work", that is, in how good it is in personal experience. But the most popular was the philosophy of science and technology, which put at the forefront the global problems generated by the scientific and technological revolution. The stumbling block between different schools of thought has become the humanities
In January 1900, the American ethnologist, anthropologist and culturologist Leslie White was born in Colorado. It was he who introduced the term "culturology", which designated a separate independent discipline
Philosophy has many sections in accordance with the way in which it considers a particular phenomenon. Gnoseology is an important branch of philosophical knowledge that answers the question of how we can know these phenomena, and what are the criteria for the truth of this knowledge
The moon is a satellite of our planet, attracting the eyes of scientists and just curious people from time immemorial. In the ancient world, both astrologers and astronomers devoted impressive treatises to her. The poets did not lag behind them. Today, little has changed in this sense: the orbit of the Moon, the features of its surface and interior are carefully studied by astronomers. The compilers of horoscopes also do not take their eyes off her
Nebulae in space are one of the wonders of the universe, striking in their beauty. They are valuable not only visual appeal. The study of nebulae helps scientists clarify the laws of the functioning of the cosmos and its objects, correct theories about the development of the Universe and the life cycle of stars. Today we know a lot about these objects, but not everything
Recently, science has become known for certain what a black hole is. But as soon as scientists figured out this phenomenon of the Universe, a new, much more complex and confusing one fell on them: a supermassive black hole, which you can’t even call black, but rather dazzling white
Mammals are animals that feed their young with milk. They are the most highly organized. The excretory, reproductive, digestive, respiratory and circulatory systems of mammals are the most complex in comparison with representatives of other systematic units. But special attention should be paid to the structure of the digestive system
Comprehensive analysis allows you to assess the current solvency of the organization and its activities. This, in turn, helps owners, investors and lenders to correctly assess the existing potential
Types of science differ from each other depending on which side of reality, the material form they explore
One of the essential parts of every person's life is sleep. This is the time when we restore our strength, relax, and also rest both physically and emotionally
Today, the Russian Federation has the most powerful space industry in the world. Russia is the undisputed leader in the field of manned cosmonautics and, moreover, has parity with the United States in matters of space navigation. Some lags in our country are only in the research of distant interplanetary spaces, as well as in the development of remote sensing of the Earth
There are three groups of explosives with different susceptibility to external influences and different types of explosion. These include: initiating, propelling, as well as blasting substances. This article provides information about blasting explosives and their areas of application
Liquid is one of the states of aggregation of gas, but only at the beginning of the last century people first received liquefied air
Endothelial cells play a huge role in the human body. They take part in blood circulation, vascular homeostasis, as well as regeneration and development of new blood vessels. What are they like? What are important for a person and what is their function? The answers to these questions are given in the article
There are many foods that we are accustomed to consume daily. S alt is one of them. This product is associated not only with our nutrition, but also with life in general. Our article describes various types of s alt. In addition, you can find out its positive and negative qualities, as well as the daily rate of its use
Theory of knowledge is the doctrine of the process of accumulating new knowledge and how humanity comprehends the world around us and the causal relationships that operate in it. No one doubts that from generation to generation we pass on to our descendants an increasing amount of knowledge. Old truths are supplemented by new discoveries in various fields: science, art, in the sphere of everyday life. Thus, cognition is a mechanism of social communication and continuity
What are applied sciences? What value do they have? Why develop? What is their importance to society?
The roots of modern legal science go back centuries. Knowledge of law and law appeared in antiquity
Science is a sphere of human professional activity, like any other - industrial, pedagogical, etc. Its only difference is that its main goal is to obtain scientific knowledge. This is its specificity
Comparative method: application, theoretical and practical significance, scope. Comparative method in psychology and jurisprudence
The phrase "internal environment of the body" appeared thanks to the French physiologist Claude Bernard, who lived in the 19th century. In his works, he emphasized that a necessary condition for the life of an organism is to maintain constancy in the internal environment. This provision became the basis for the theory of homeostasis, which was formulated later (in 1929) by the scientist W alter Cannon