Fermat's Theorem, its riddle and endless search for a solution occupy a unique position in mathematics in many ways. Despite the fact that a simple and elegant solution was never found, this problem served as an impetus for a number of discoveries in the field of the theory of sets and prime numbers. Last modified: 2023-12-17 05:12
Science 2024, December
Uniform rectilinear motion is a special type of motion, as a result of which the body performs the same movement in absolutely equal time intervals. Last modified: 2023-12-17 05:12
In this article we will consider the definition of a system as a device made up of various structural elements. Here the question of the classification of systems and their characteristics will be touched upon, as well as the formulation of Ashby's law and the concept of a general theory. Last modified: 2023-12-17 05:12
One of the basic physical principles of the interaction of solid bodies is the law of inertia, formulated by the great Isaac Newton. We encounter this concept almost constantly, since it has an extremely great influence on all material objects of our world, including humans. In turn, such a physical quantity as the moment of inertia is inextricably linked with the law mentioned above, determining the strength and duration of its impact on solid bodies. Last modified: 2023-12-17 05:12
The movement of different bodies in space in physics is studied by a special section - mechanics. The latter, in turn, is divided into kinematics and dynamics. In this article, we will consider the laws of mechanics in physics, focusing on the dynamics of the translational and rotational movement of bodies. Last modified: 2023-12-17 05:12
Talcott Parsons (1902-1979) occupies a prominent place in the history of sociology. Thanks to the activities of this professor at Harvard University, this discipline was brought to the international level. Parsons created a special style of thinking, which is characterized by the belief in the leading role of scientific knowledge, reduced to building systems and systematizing data. Last modified: 2023-12-17 05:12
The sun plays an important role for us on Earth. It provides the planet and everything on it with vital factors such as light and heat. But what is solar radiation, the spectrum of sunlight, how does all this affect us and the global climate in general?. Last modified: 2023-12-17 05:12
Proxima Centauri is the closest star to Earth. It got its name from the Latin word proxima, which means "nearest". Its distance from the Sun is 4.22 light years. Last modified: 2023-12-17 05:12
The cave lion is one of the types of ancient creatures that terrified smaller brothers. Even primitive people tried to avoid its habitats. Last modified: 2023-12-17 05:12
The era of dinosaurs is long gone, and huge lizards can only be found in museums and cinemas. Some representatives of flora and fauna from distant historical times have survived to this day. They are called relics. Last modified: 2024-01-18 03:01
The term "ufology" is often found in the media today. Its meaning is not always clear to ordinary people. What is ufology? Is it science or an unrecognized craze for groups of people around the world? We will try to find the right answers to these questions. Last modified: 2023-12-17 05:12
The constellation Lyra cannot boast of large sizes. However, since ancient times it has been attracting attention due to its favorable location and bright Vega. Several interesting space objects are located here, making Lyra a constellation valuable for astronomy. Last modified: 2023-12-17 05:12
Rosalind Elsie Franklin is a brilliant British chemist whose X-ray studies provided a key insight into the structure of deoxyribonucleic acid and quantitatively validated the Watson-Crick model. She also found that DNA molecules exist in more than one form. Last modified: 2023-12-17 05:12
The article describes the properties of galaxy clusters, the largest clusters, as well as a nebula of particular interest - Veronica's Hair. Last modified: 2023-12-17 05:12
One of the most famous American chemists is Linus Pauling. His biography is of interest not only to residents of the United States, but also to people around the world. No wonder, because he researched vitamins - dietary supplements so popular today. And I must say, Linus Carl Pauling came up with interesting results. It is about this scientist, who became the winner of two Nobel Prizes, that we will talk about today. Last modified: 2023-12-17 05:12
Power in physics is understood as the ratio of the work done in a certain time to the time interval for which it is performed. Under the mechanical work is meant the quantitative component of the impact of force on the body, due to which the latter moves in space. Last modified: 2023-12-17 05:12
The 21st century brought with it new technologies and the ability to make extraordinary inventions. The beginning of the century has already brought novelties, and ahead of mankind there are still a lot of new discoveries and inventions. Last modified: 2023-12-17 05:12
Today we will devote a conversation to such a phenomenon as light pressure. Consider the prerequisites for discovery and consequences for science. Last modified: 2023-12-17 05:12
Can we theoretically calculate in which areas gold ore is deposited, determine the amount of its reserves in a particular deposit, in order to decide whether it is profitable to build a mining enterprise here? After all, exploration, drilling of deep wells and exploration mines takes years and more than one thousand dollars. Are there any signs by which the presence of precious metal in the depths of the earth's interior is guessed?. Last modified: 2023-12-17 05:12
In molecular genetics, the processes of DNA, RNA and protein synthesis are divided into three stages for convenience of description: initiation, elongation and termination. These stages describe different mechanisms for different synthesized molecules, but always mean "beginning", "progress" and "end". Last modified: 2023-12-17 05:12
Consideration of some issues within the framework of a school mathematics course is not always possible. For example, this applies to the classification of numerical sets - it is only touched upon in passing. Rational, irrational and many others - where do they meet, what are they used for?. Last modified: 2023-12-17 05:12
Much in quantum mechanics remains beyond understanding, much seems fantastic. The same applies to quantum numbers, the nature of which is still mysterious today. The article describes the concept, types and general principles of working with them. Last modified: 2023-12-17 05:12
Rutherford Ernest (years of life: 08/30/1871 - 10/19/1937) - English physicist, creator of the planetary model of the atom, founder of nuclear physics. He was a member of the Royal Society of London, and from 1925 to 1930 - and its president. This man is the winner of the Nobel Prize in Chemistry, which he received in 1908. Last modified: 2023-12-17 05:12
Unlike eukaryotes, bacteria do not have a formed nucleus, but their DNA is still not scattered throughout the cell, but is concentrated in a compact structure, which is called a nucleoid. In functional terms, it is an analogue of a nuclear apparatus. Last modified: 2023-12-17 05:12
A small reference description of the main properties of nitroglycerin, methods for its preparation in the laboratory and (as an addition) theoretical methods for its synthesis in an artisanal way. Nitroglycerin is an extremely unstable explosive substance, when handling it, do not forget to follow safety precautions. Last modified: 2023-12-17 05:12
The main components of starch, their chemical formulas, properties, reactions. Last modified: 2023-12-17 05:12
If you suddenly imagine yourself as a great alchemist or colorful mad scientist, here is an instruction for one of the most extravagant ways to make a dream come true: effectively dissolve something gold. Last modified: 2023-12-17 05:12
A brief description of one of the types of optical isomerism. Last modified: 2023-12-17 05:12
Explanation of the term variance and method of finding. Last modified: 2023-12-17 05:12
A brief review of examples of reactions that do not go according to Markovnikov's rule, and the reasons that cause such a move. Last modified: 2023-12-17 05:12
Some initial general information about the chemistry of hydrogen compounds of non-metals. Last modified: 2023-12-17 05:12
Copolymers are one of the types of macromolecular compounds. They are widely used in industry in the form of conventional polymers with additives that improve their thermal and physical-mechanical properties. Most rubbers, synthetic fibers are all copolymers. Last modified: 2023-12-17 05:12
Paraffins are what usually begin the study of carbon chemistry. The simplest organic compounds, which clearly explain the basic principles and features of this section of chemistry. To the general public, however, they are better known as the main component of oil and natural gas. Last modified: 2024-01-15 17:01
Many problems in physics can be successfully solved if the laws of conservation of one or another quantity during the considered physical process are known. In this article, we will consider the question of what is the momentum of the body and the law of its conservation. Last modified: 2023-12-17 05:12
What elements are included in the social structure? How do they interact with each other? How to evaluate the results of such interaction and can they be considered progressive? Sociology closely studies such a complex organism as human society, since the content and mode of its existence affects the future of new generations. Last modified: 2023-12-17 05:12
Although our Earth feels great in the universe around it, it is just a small planet in the solar system that occupies a huge area. In turn, our solar system is just an integral part of the massive Milky Way galaxy, which includes from 200 to 400 billion stars. So how many galaxies are there in the universe?. Last modified: 2023-12-17 05:12
Reason and mind are two concepts that many people compare and consider identical processes. This opinion is extremely wrong, because these are two different definitions that coexist in the human mind throughout his life. Last modified: 2023-12-17 05:12
The innovation process is the gradual transformation of an idea into a product. It can be divided into two main stages: the first stage (it is the longest) includes research and development, the second stage is the product life cycle. Last modified: 2023-12-17 05:12
The question of what sulfites are in products is being asked by more and more people. And rightly so, because knowledge of this can prolong a person's life. We find sulfites in food, in particular, in wines and dried fruits, but these preservatives can be found in many other foods, especially fruits and vegetables. Last modified: 2023-12-17 05:12
Caprolactam is a white crystals, readily soluble in water, alcohol, ether, benzene. When heated in the presence of a small amount of water, alcohol, amines, organic acids and some other compounds, caprolactam polymerizes to form a polyamide resin, from which capron fiber is obtained. An important property of caprolactam is the ability to polymerize with the formation of a valuable polymer - polycaproamide. Last modified: 2023-12-17 05:12