The uncertainty of solving a quadratic equation on the entire field of real numbers led to the concept of an imaginary unit. This gave impetus to the development of mathematics. Algebra began to operate with the concept of a complex number. It turned out that all the laws applicable to real numbers apply to the new concept of the set of complex numbers. The article presents the basic concepts and definitions on the topic
Secondary education and schools 2024, September
Probably, the fact that the novel is philosophically inexhaustible, one of the world's top 100 bestsellers and a compulsory secondary education curriculum in literature, contributed to the popularization of his research. Few classical works have such an extensive list of topics
Modern science is moving forward, trying to find a panacea for diseases and extend the days of a person on earth, but do not forget that along with a long life, you can also get a dog's heart, which will make the past century aimless and useless. This is precisely what Mikhail Bulgakov warns about in his story
20 years ago, graduates wrote examination essays in literature and Russian in notebooks - they were so voluminous. And now even the condition "at least 150 words" confuses students. Probably, there would be fewer questions if modern students could not only watch TV, play on a computer, but also read books. Preferably good
Complete freedom in the presentation of material and the possibility of self-expression have made the essay a popular genre not only to test the knowledge and skills of students, but also one of the defining criteria for employers when selecting employees
Knowing what relevance is, you can determine what the meaning of a literary work is and the relevance of the chosen topic for an essay on it
What is poetry? After reading this article, you will learn the real definition of the word "poetry", which does not quite coincide with ordinary opinion. Moreover, the article describes the main types of poetry and their applications. Here you can find some information about the origin of poetry as an art form
Artistic means are used in literature for expressiveness. One of the popular means in fairy tales, fables, poems and novels is allegory
One of the most controversial and little-studied processes in biology is anthropogenesis - the evolutionary path of human development as a biological species. What is characteristic of human evolution from the point of view of natural science?
The essay is a unique literary genre. In essence, this is any short work-essay written in private on any issue. The key feature of the essay is its author's design. At the beginning of the article, a detailed classification of essay types is provided. Also in the article there are: terminology, history, essay design, a sample of writing an essay on social studies, structure and requirements. All this will help to successfully write this type of work
If you ask hundreds of people: “What is the southernmost continent on the planet?”, unfortunately, not everyone can answer correctly. To dispel all doubts of those who do not know the answer to this question, we will immediately make a reservation that the southernmost continent is Antarctica. It was discovered by the last of the continents of the Earth
The US is considered a superpower with the most powerful economy in the world. The area of the States is 9,629,091 sq. km, in terms of population, the state is in third place (310 million). The country stretches from Canada to Mexico, occupying a fairly large part of the North American continent. Alaska, Hawaii and a number of island territories are also subordinate to the United States
The article describes the economic and geographical position of Sweden, its change over time. The evolution of the Swedish economy from agrarian to high-tech is also traced
The article tells about the evolution of the idea of what the countries of the West are. The history of this term is considered not only from the standpoint of Russia, but also the countries of the so-called "third world", which are under significant pressure from the developed capitalist countries
Pechora Sea can be found not on all maps. It is a small area located in the southwestern part of the Barents Sea, which belongs to the waters of the Arctic Ocean
Among the dangerous organisms that settle inside a person and harm his he alth, a significant place is occupied by parasitic protozoa. These are single-celled animals that have adapted to existence at the expense of others
In one beautiful poetic work there were such lines: “We believe in words slowly, the world repeats them for centuries. In the eyes, the soul shines, inexplicable in words … ". This passage illustrates a fairly common belief that looking into the eyes of another - you can see in them his thoughts, character and feelings. However, if someone says that a person has "empty eyes", what does this mean? Let's take a closer look at the meaning of this phrase
In the glorious combat past of our weapons, there is one interesting page called atomic bullets. This top-secret projectile could melt an armored tank and pulverize an entire building. Why the USSR abandoned the further use of the most portable nuclear weapons, you will learn from this article
What are non-Newtonian fluids? Examples can certainly be found even in your refrigerator, but quicksand is considered the most obvious example of a scientific miracle - fluid and solid at the same time due to suspended (suspended) particles
The largest and longest river in the Vologda Oblast is the Sukhona. She is the main component of the water flow called the Northern Dvina. The Sukhona River, the photo of which is presented below, has a length of 558 km, the area of u200bu200bits basin exceeds 50 thousand square meters. km. Its name was formed from the word "sukhodna", which means "with a dry bottom"
Every year more and more tourists visit Russia. Especially in the summer, there are a lot of them. In order to stay at the hotel even for a few days, you need to book rooms several months in advance. The bulk of travelers are Japanese, Chinese and Europeans. The sights of Russia in English are translated as Sights of Russia and are a fairly frequent request in the search engines of the Global Network
One of the famous European countries famous for its sights is Poland. Access to the B altic Sea has a significant impact on the formation of the climate in Poland
Geometry is an exact and rather complex science, which, with all this, is a kind of art. Lines, planes, proportions - all this helps to create a lot of really beautiful things. And oddly enough, this is based on geometry in its most diverse forms. In this article, we will look at one very unusual thing that is directly related to this. The golden ratio is exactly the geometric approach that will be discussed
In the material we will give a detailed definition of the school museum, briefly touch on its history, voice the goals, objectives, principles, social mission of its work. Let's imagine the distinctive features of school museums, let's see what profile these institutions meet. In conclusion, let's talk about the funds and expositions of these organizations
To preserve continuity in folk culture, ecological, sociocultural, socioeconomic knowledge is transmitted from generation to generation in a certain territory, that is, everything that studies historical local history. With its help, the special features of the place, objects, personalities are revealed and revealed, they enter the practical mainstream of the trends and traditions of the development of the region
In a short article, the definition of the word "story" will be considered. And, perhaps, it seems that the form is small, although quite capacious, but the task itself, it seems, is far from being as trivial as it seems at first glance. Well let's start
What is fabric? How is the conductive tissue of plants arranged? What types of it exist? What functions does it perform?
Systematics in biology distinguishes taxonomic groups of living organisms for the convenience of identifying the totality of animals, plants, bacteria. Each group has its own rank. Top ranks include millions of species
The state of Maine belongs to the New England region and is the easternmost land of the United States. Initially, its territory was part of Massachusetts, but on March 15, 1820, it separated and became the 23rd state of the state. The population of the region is just over 1.3 million people
The 6th grade is studying the topic “Optical phenomena in the atmosphere” at school. However, it is of interest not only to the inquisitive mind of a child. Optical phenomena in the atmosphere, on the one hand, combine the rainbow, the change in the color of the sky during sunrises and sunsets, seen more than once by everyone. On the other hand, they include mysterious mirages, false moons and suns, impressive halos that terrified people in the past
The very name "tropical deserts" tells us that this natural zone lies in the climatic zone of the same name. On our planet, almost all desert areas are located precisely in the tropics, but, unlike paradises on the coasts of the sea, the weather conditions here are much more severe and completely unsuitable for life
It is difficult to say when the question of the appearance and formation of man first arose. This problem was of interest to both the thinkers of ancient civilizations and our contemporaries. How is society developing? Is it possible to single out certain criteria and stages of this process?
As you know, the capital is the main city of the country, which is the administrative and political center of a certain state. The capitals of the countries of the world usually have all the main judicial, parliamentary and government institutions
This article will focus on an unusual and unique corner of the globe - the beautiful Tauris! How many people live on the peninsula and what is the size of the territory of Crimea? The area, nature, ethnic and religious composition of the Crimean population will be the subjects of this information article
To understand how the global problems are interconnected, it is important to carefully study each of them. Humanity of the modern world faces the most difficult tasks. Some issues really threaten our existence, however, like all life on the "green" planet
The topic of our review will be the Nevelskoy Strait. In Russia, many people know about him. Let's get some details straight. For example, its history, after whom the Nevelskoy Strait is named, what is its depth, etc
How is life on the largest island of the Russian Federation. Description of climatic conditions, the history of its settlement, as well as tourist destinations of the Sakhalin region
Education is an important part of life, on which the further professional destiny of a person depends. What is the modern procedure for attesting schoolchildren, read in this article
The article tells about the agro-climatic resources of the planet, their distribution in different regions, as well as ways to compensate for their lack
The biologically active upper shell of the Earth is called the soil cover. Its main quality is fertility. It determines its suitability for the cultivation of cultivated plants, providing food for the population of the planet. All this gives the soil a major role in the production of agricultural products