Science

Geographic, or as it is also called, allopatric speciation is the formation of new species in spatial isolation. Simply put, the formation of a species comes from populations living in different geographical areas. Last modified: 2025-01-23 12:01

Alkyd resins: chemical composition, classification, main characteristics. Modified and unmodified alkyds. Methods for obtaining these compounds. Application for the production of paints and varnishes and their features. Environmental aspects. Last modified: 2025-06-01 07:06

Not many of us know the identity of Claude Bernard. If you are studying at a medical college or university, then knowing the founder of endocrinology and physiology is simply necessary. Facts from the life and discoveries of a doctor - more. Last modified: 2025-01-23 12:01

The development of the human embryo is a complex process. And an important role in the correct formation of all organs and the viability of the future person belongs to extra-embryonic organs, which are also called provisional. What are these organs? When do they form and what role do they play? What is the evolution of human extra-embryonic organs? We will answer these questions in this article. Last modified: 2025-01-23 12:01

What is embryology? What does she do and what does she study? Embryology is a science that studies part of the life cycle of a living organism from the moment a zygote is formed (fertilization of an egg) until its very birth. Last modified: 2025-01-23 12:01

Carbonic acid, which is an aqueous solution of carbon dioxide, can interact with basic and amphoteric oxides, ammonia, and alkalis. As a result of the reaction, medium s alts are obtained - carbonates, and provided that carbonic acid is taken in excess - bicarbonates. In the article we will get acquainted with the physical and chemical properties of magnesium bicarbonate, as well as with the features of its distribution in nature. Last modified: 2025-06-01 07:06

Empathy is not just the ability to empathize and feel someone else's soul, but the ability to understand the mental and emotional state of a person, feel his emotions and at the same time realize that they belong to him. Last modified: 2025-01-23 12:01

Despite many unsuccessful experiments using the SpaceX Falcon 9 launch vehicle, whose launch lists contain about 50 dates at the beginning of 2018, only a few of them turned out to be really failures. But the main task - the reusable use of the first stage, and then other key elements of the space-conquering apparatus, Elon Musk's engineers managed to achieve. Last modified: 2025-01-23 12:01

The article is devoted to the concepts of species and population. The features of the study of species and populations, the processes and forms of speciation, criteria, etc. are considered. Last modified: 2025-01-23 12:01

There are discussions among neuroscientists, cognitionists and philosophers about whether the human brain can be created or reconstructed. Current breakthroughs and discoveries in brain science are steadily paving the way for a time when artificial brains can be recreated from scratch. In the article, we will consider questions about the development of artificial intelligence, its prospects, as well as about large companies and projects in this area. Last modified: 2025-01-23 12:01

The internal energy of an ideal gas includes only the sum of the kinetic energies of its particles. Let us assume that the chemical composition of the gas and its mass remain unchanged. In this case, the internal energy depends only on the temperature of the gas. Last modified: 2025-06-01 07:06

Women scientists: from hoary antiquity to the present day. The contribution of women to science. Discoveries that occurred thanks to the learned ladies. Last modified: 2025-06-01 07:06

The concept of "radiation" is firmly rooted in our minds as a sharply negative and dangerous phenomenon. However, the person continues to use it for their own purposes. What does she really represent? How is radiation measured? How does it affect a living organism?. Last modified: 2025-01-23 12:01

Radioactive or ionizing radiation greatly affects living organisms. People are constantly exposed to radiation in small amounts that do not cause serious harm to he alth. However, stronger radioactive radiation leads to serious illnesses and a threat to life. Therefore, a special system of coefficients has been developed to measure the radiation dose. Last modified: 2025-01-23 12:01

Heinrich Hermann Robert Koch is a famous German doctor and microbiologist, Nobel Prize winner, founder of modern bacteriology and epidemiology. He was one of the most prominent scientists of the 20th century, not only in Germany, but throughout the world. Many advances in the fight against convection diseases, which before his research remained incurable, became a sharp push in medicine. Last modified: 2025-01-23 12:01

The basis of human life is purposeful professional activity. It is at work that a person spends most of his time. Someone does it for their own satisfaction and enjoyment, others do it for the material provision of themselves and their families. Last modified: 2025-01-23 12:01

Negation in logic is the act of refuting a statement that does not correspond to reality. At the same time, this act unfolds into a new thesis. Last modified: 2025-01-23 12:01

What branches of psychology exist? What and how are they studying now? What is their purpose, tasks and functions?. Last modified: 2025-01-23 12:01

Let's try to find out what is called a methodical technique. Consider their classification and options used in the lessons. Last modified: 2025-01-23 12:01

Comparative analysis is a method of comparing two or more research objects (phenomena, objects, ideas, results, etc.). As a result of this analysis, the advantages and disadvantages of the compared objects are revealed in order to classify the selected objects of study. Last modified: 2025-01-23 12:01

The very concept of "operations research" is borrowed from foreign literature. However, the date of its occurrence and the author cannot be reliably determined. Therefore, it is advisable first of all to consider the history of the formation of this area of scientific research. Last modified: 2025-01-23 12:01

Here and now we will consider cybernetics as a complex science, dealing with a huge number of problems of the human race. We list the branches of this science and characterize their main differences and the problems of the issues they are engaged in, and also pay attention to the history of the development of cybernetics. Last modified: 2025-01-23 12:01

Any society, starting with the family and ending with humanity as a whole, has a social consciousness. The forms of this consciousness are experience, morality, religion, and so on. But, undoubtedly, one of the most important forms is science. It is she who forms new knowledge in society. Last modified: 2025-01-23 12:01

If you look at the path that mankind has passed, we can say that for a representative of homo sapiens, the main tasks have always been three: to survive, to learn and to create. Last modified: 2025-01-23 12:01

You can often hear such criticism that someone is "not objective". And this seems to be a universal argument against the speaker. Is objectivity a property, a characteristic, or one of the conditions? How specialized is this term? Does it have a purely positive color or is it a priori neutral? The definition of objectivity, its connection with subjectivity, objectivity in philosophy and its role in the scientific picture of the world - this is the subject of the article below. Last modified: 2025-01-23 12:01

Let's analyze what scientific methods are. Let's reveal their features, use in the study of various objects and phenomena. Last modified: 2025-01-23 12:01

The concept of “metals” is one way or another imagined by everyone. Iron, silver, gold, copper, lead. These names are constantly in the news, so few people will ask the question of what metals are. And yet, it would not hurt to learn about what metals are from the standpoint of a chemist and physicist, if you want to have a systemic picture of the world in your head. And for completeness of knowledge on this topic, it would not hurt to learn about other groups - non-metals and metalloids. Last modified: 2025-01-23 12:01

UV radiation is electromagnetic radiation whose wavelength ranges from the edge of the violet spectrum to the edge of X-rays. It is worth noting that the first mention of this phenomenon arose in the thirteenth century. Last modified: 2025-01-23 12:01

Comet Shoemaker-Levy 9 created one of the most interesting sights people have ever seen. A few months after the discovery, parts of the comet crashed into the planet Jupiter. The collision caused damage that is visible from Earth. In official sources, where NASA describes the comet, information appeared that this was the first collision of two bodies in the solar system that scientists observed. Last modified: 2025-01-23 12:01

Prime numbers are one of the most interesting mathematical phenomena that has attracted the attention of scientists and ordinary citizens for more than two millennia. Despite the fact that we now live in the age of computers and the most modern information programs, many mysteries of prime numbers have not yet been solved, there are even those that scientists do not know how to approach. Last modified: 2025-01-23 12:01

Homo sapiens, or Homo sapiens, has undergone many changes since its inception - both in body structure and in social and spiritual development. According to the modern classification, the species "reasonable man" is divided into 2 subspecies - "Id altu man" and "reasonable man". Last modified: 2025-01-23 12:01

Humanity should be the main property of Homo Sapiens species. Quite often, schoolchildren are given as homework to consider the topic of man and humanity. In the article you can read a detailed consideration of this issue. Last modified: 2025-01-23 12:01

The Andromeda Nebula is our closest large galactic neighbor. Even more interesting is the fact that, according to the predictions of scientists, it will merge with our own cluster of stars - the Milky Way - in about 4 billion years (by cosmic standards, this is very soon). Last modified: 2025-01-23 12:01

Now it has become fashionable to use the words "socially significant". But what do they mean? What benefits or specifics do they tell us about? What tasks do socially significant projects perform? All this we will consider in the framework of this article. Last modified: 2025-01-23 12:01

It's nice to feel your ability to use your brain. Often people do not attach importance to the fact that the simplest mathematical operations that can be performed without problems in the mind are straining. Man no longer trusts his mind or memory. Instead, calculators and computer technology appeared. Last modified: 2025-01-23 12:01

The course of algebra provides for the study of various kinds of equations. Among them, a special role is occupied by quadratic functions, the solution of which is the construction of a parabola on the coordinate axis. Consider the principles for solving equations, as well as the simplifications that can be made. Last modified: 2025-01-23 12:01

When straight lines intersect, angles are formed, which are divided into adjacent and vertical ones. They have their own properties and features. Last modified: 2025-01-23 12:01

Eruic acid is a monobasic carboxylic acid, which is also classified as an omega-9 unsaturated fatty acid. This acid is found in some vegetable oils. But what are its properties? Does it harm the human body?. Last modified: 2025-01-23 12:01

Thioglycolic acid is a colorless liquid that has an unpleasant odor. The formula of this substance is HSCH2COOH. Acid is often used to curl hair. But what harm can it bring to the human body? What properties does it have, and where else is it used?. Last modified: 2025-01-23 12:01

Sebacic acid is a representative of carboxylic acids. There are several names for this compound, one of them is decandioic acid. What is it made of, and what properties does this compound have?. Last modified: 2025-01-23 12:01