The research hypothesis allows the schoolchild (student) to comprehend the essence of their actions, to think over the sequence of project work. It can be considered a form of scientific conjecture. The correctness of the selection of methods depends on how correctly the research hypothesis is put, therefore, the final result of the entire project
Science 2024, November
A brief description of the taxonomy of primates and monkeys, a description of the order of broad-nosed monkeys for some species
The famous geochemist academician Fersman put forward the hypothesis that a silicon form of life (non-carbon) is possible on our planet. Similar assumptions were made by different scientists at different times
Under Ursa Major, next to Bootes, there are Hounds Dogs, a constellation connected with the neighbors by a mythological plot. This celestial drawing has an interesting fate and includes many curious space objects
Electric current is present in our daily life and is even an integral part of it. Of course, there are disappointing statistics of deaths from exposure to current. But electric current not only kills, but also saves lives
The article describes calcium nitrate, indicates the features of this compound, its scope, as well as the possibility of using it in agricultural production
I. P. Pavlov is a great Russian physiologist, thanks to whom the foundation for research on the digestive system was laid. What was the method of his work and what is his role in science - read in the article
Modern physicists experimentally confirm that energy from vacuum is an inexhaustible source. Vacuum at the quantum level is a "bottomless sea" of virtual particles, constantly moving into a real state
What is Pedagogy? What is she studying? What features of this science may be of interest to a wide range of people?
Every person has certain needs. Most of these needs are related to communication and interaction with other people. Belonging to a family gives a person the opportunity to satisfy them. A family is a system that exists according to certain rules and performs certain functions
The Haeckel-Muller biogenetic law describes the ratio observed in wildlife - ontogenesis, that is, the personal development of each living organism, to a certain extent it repeats phylogeny - the historical development of the entire group of individuals to which it belongs
The theory of relativity, presented to the scientific community at the beginning of the last century, made a splash. Its author, A. Einstein, determined the main directions of physical research for decades to come. However, do not forget that the German scientist in his work used numerous developments of his predecessors, including the famous principle of relativity of Galileo
Everyone knows: streets, houses, cities and villages, as well as various natural objects have their own names. However, not everyone knows that such a discipline as toponymy is engaged in their study. This is a science that studies geographical names with all their features
Solving chains of chemical transformations is one of the most common tasks in school textbooks on chemistry. So, learning to deal with them is very important for a student of chemistry. The article will offer you several examples of chains with a step-by-step analysis of their solution, which can help you understand how such tasks work and what steps should be taken to successfully solve chemical chains of transformations
Archimedes is an ancient Greek mathematician who exclaimed "Eureka". He is one of the most famous scientists of antiquity. The research activity of Archimedes touched not only mathematics, as many people used to think. The scientist proved himself in the field of physics, and astronomy, and even mechanics. He created things that were used in various branches of human activity, from agriculture to military affairs
Currently, there are many works devoted to what causes the asteroid hazard for earthlings, what it consists in, how it is revealed. Some scientists propose solutions that would minimize the risks posed by outer space and the bodies in it. For a simple layman, asteroids are often nothing more than shooting stars that you want to make wishes on, but sometimes a celestial body causes a large-scale catastrophe
In 1845, the English astronomer Lord Ross discovered a whole class of spiral-type nebulae. Their nature was established only at the beginning of the twentieth century. Scientists have proven that these nebulae are huge star systems similar to our Galaxy, but they are many millions of light years away from it
Standard time or time zones. We are all familiar with this concept. But how and when this system was introduced, what interesting facts are connected with it. This will be discussed
Many people roughly know what plastids are from school. In the course of botany, it is said that plastids in plant cells can be of different shapes, sizes and perform various functions in the cell. This article will remind about the structure of plastids, their types and functions to those who graduated from school long ago, and will be useful to everyone who is interested in biology
Nature everything is so harmoniously arranged that in this world everyone has his own place and is engaged in the functions that are assigned to him, whether it is the crown of nature - an incredibly complex human or the most microscopic organism. Everyone plays their part to make our world a better place. This also applies to various bacteria, which, according to the great plan of the creator of the world, bring people not only benefits, but also certain harm
The article briefly characterizes the prosthetic groups of all classes of complex proteins and complex lipids. Prosthetic groups of enzymes are considered separately. The table of correspondence of prosthetic groups to enzymes is given
Protein: structure, functions. Spatial structures of peptides. Physical and chemical properties of proteins, examples. Classification of polypeptide molecules
Ivanovsky Dmitry Iosifovich (1864-1920) - an outstanding microbiologist and physiologist who left a noticeable mark on science. As early as the end of the 19th century, he suggested the presence of special microorganisms - viruses that cause a number of plant diseases. His theory was confirmed in 1939
In molecular biology, the term "double helix" refers to the structure formed by double-stranded nucleic acid molecules such as DNA. The double helical structure of a nucleic acid complex arises from its secondary structure and is a fundamental component in determining its tertiary structure
Organisms with a three-chambered heart have several advantages over those with a two-chambered heart. They can live on land, are less dependent on the temperature environment. In addition, amphibians tend to fall into a state of torpor, which allows a three-chambered heart. The four-chambered organ is the pinnacle of the evolution of the heart
Proteins, the biological role of which will be considered today, are macromolecular compounds built from amino acids. Among all other organic compounds, they are among the most complex in their structure. According to the elemental composition, proteins differ from fats and carbohydrates: in addition to oxygen, hydrogen and carbon, they also contain nitrogen
Muscle tissue. The structure and functions of all its varieties: striated, cardiac and smooth. The structure of the muscle cell - myocyte. Basic properties of all muscle tissues
Calculation of the heat exchanger currently takes no more than five minutes. Any organization that manufactures and sells such equipment, as a rule, provides everyone with their own selection program. It can be downloaded for free from the company's website, or their technician will come to your office and install it for free. However, how correct is the result of such calculations, can it be trusted and is the manufacturer not being cunning when fighting in a tender with his competitors?
A random variable X is called continuous if its distribution function is continuous and has a derivative
A dispersed phase is a discontinuous phase in a dispersed system in the form of individual small solid particles, liquid droplets or gas bubbles. A dispersed system is a formation of two or more phases (bodies) that practically do not mix and do not react with each other with another chemically. The first of the substances (dispersed phase) is finely distributed in the second (dispersion medium)
Impulse response (IR) - h (t) in short - this is a response to the impact of the type of unit impulse function (UIF), that is, the delta function δ (t); strict impulse response h (t) is numerically equal to the reaction f2 (t) at zero independent initial conditions (NIC) to the only action in the circuit f1 (t)=F10 δ (t), where F10=1V s (or 1A c) is the coefficient used to equalize the dimension
Relational algebra is present and fully responsible for databases, it has various models, descriptions and examples
The system of Navier-Stokes equations is used for the theory of stability of some flows. And also to describe turbulence
Markov processes are widely used in human life, they are common and not always visually visible, but upon closer examination, they can be subtracted and taken into account. In addition, it was the Markov process that made it possible to develop various branches of scientific knowledge
For the first time, the development of a free energy generator was carried out by Nikola Tesla, but in the process of development, humanity pushed these scientific studies into the background, although thanks to these schemes, you can get huge amounts of energy necessary for life
Pre-school education aims to ensure the self-realization and development of children, as well as the development of the initiative and research activities of the child. One of the best means of developing the above qualities is the technology of research activities, which we will discuss in detail in this article
Many properties of solids and liquids that we deal with in everyday life depend on their density. One of the accurate and at the same time simple methods for measuring the density of liquid and solid bodies is hydrostatic weighing. Consider what it is, and what physical principle underlies its work
Alternation of generations - this, it would seem, is the surest step in evolution for the implementation of natural selection. Then why are the methods of reproduction in different kingdoms and species so diverse?
Aniline formula and its physical properties. Where the substance aniline is used, the main areas of application, its toxicity
The name of the science of biology was given in 1802 by the French scientist Lamarck. At that time, she was still beginning her development. And what does modern biology study?