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- How to grow crystal at home
Of course, to grow a crystal diamond in home conditions is impossible. But to get a very beautiful crystal of salt is possible. Because it is fragile and is afraid of water, keep it will have in the transparent box. - How to distinguish real amber
The most reliable way to distinguish genuine amber from fakes is to show product specialist-gemmology with appropriate equipment. If this is not the time or the buying decision need to be made quickly, there are a few simple rules that will allow us to understand the real amber or not. - How to calculate the volume of pipe
To calculate the volume of pipe, measure its length and inner and outer radii. Define square cross sections on the outer and inner radius, calculate the volumes. It will be the internal and external volume of the pipe. Then calculate the volume of the material from which made the pipe, by a simple subtraction. If you know the material from which made the pipe and can weigh it, calculate its volume using the density. - How to find the volume of a cylinder
In solving mathematical and technical problems sometimes it is necessary to know the volume of the cylinder. A similar problem often arises in the everyday life, as many containers (drums, pails, cans, etc.) have a cylindrical shape. Of course, if you know the radius and height (length) of the cylinder, its volume is very easy to calculate. However, in practice these options are not always specified, and the cylinders are not only direct circular. - How to transfer Cuba to the m
Cubes at home is usually called the volume of the room expressed in cubic yards (cubic meters). Meters, usually referred to as the size of the apartment or the house, represented in square meters. Sometimes in this way and measure the dimensions of a large furniture and household appliances. To correctly calculate which area is a bulky thing that required Cuba to translate in meters square. - How to find the volume of a cylinder
Cylinder – stereometric geometrical figure formed by the rotation of a rectangle about one of its sides, and having at the base circles. A physical example of a cylinder can be a piece of wire, tube. To determine the volume of a cylindrical body, one must first determine what kind of cylinder it has. - How to analyze the works of
Analysis of a work – process synthetic. It is necessary to record their feelings and at the same time to subject them to the strict narrative logic. In addition, you will need to spread out the poem or story into component parts, without ceasing to perceive it as a unified whole. To cope with these tasks will help to plan the analysis works. - How to determine the valence of the substances
Chemistry for every pupil starts with the periodic table and the fundamental laws. And only then, having understood what it was that was studying this complex science, we can start to write chemical formulas. For proper recording connection, you will need to know the valence of the atoms that make it up. - How to translate into English OOO
Translation into a foreign language, complex terms, abbreviations and acronyms that are used daily in business and informal vocabulary, which often becomes a daunting task. Most often when translating this plan are specific dictionaries, including electronic. - How to identify the North star
North star is located above the North point of the horizon in the Northern hemisphere. This allows you to use it to define the sides of the horizon. If you find yourself in unfamiliar territory without a compass, the ability to find the Polar star will help you to properly navigate the terrain. - How to measure electromagnetic field
Measurement of the electromagnetic field are carried out in two directions. First, find its frequency using the Hertz dipole or resonant circuit. To do this, tune them in resonance with an external electromagnetic field and calculate their own frequency. The second is its intensity. For rough measurements of the intensity of use an inductor (solenoid). For a more accurate – special devices. - How to increase water pressure
If insufficient water supply pressure water, install a special charge station. In the case of uneven pressure, for example, reduce it with increased drinking water, select a special accumulator. In the General case, the pressure of water can be increased by increasing the height of the column above the tap. - How to distinguish a ruby from a fake
To distinguish a ruby from a fake is difficult. These stones people fake a long time ago and achieved good results. But there are signs that help to determine the authenticity of the ruby. - How to find the diagonal
Each polyhedron, a rectangle, a parallelogram and a diagonal. It usually connects the corners of any of these geometric shapes. The value of the diagonal has to find the solution of problems in elementary and higher mathematics. - How to write Russian letters English word
In order to write Russian letters English word, no need to reinvent the wheel, combining odd combinations of letters and numbers. Enough to learn a few rules of reading in English, and even better to get an idea of the phonetic sounds. - How to compare fractions with different denominators
To compare fractions with the same denominators, you simply compare their numerators. The situation is somewhat different in the case when two fractions with different denominator. Here you will need to complete a little more action. - How to increase the density of the electrolyte
The decrease in the density of the electrolyte occurs mainly when the battery is dead. This increases the internal resistance of the battery and decreases its capacity, which leads to difficulties when trying to start the engine due to the lower power starter. Consider how you can increase the density of the electrolyte. - How to solve problems with math homework
According to many sources, resolving problems, developing logical and intellectual thinking. Tasks "on the job" are some of the most interesting. In order to learn how to solve such problems, you should be able to present the process of work, as they say. - How to calculate cube root
In technical calculations and in the solution of many tasks is sometimes required to calculate cubic root, i.e. to find such a number, the cube of which is equal to the original. To calculate the value of the cube root scientific calculator is sufficient. However, even on this calculator there are no special keys to calculate cubic root. But using some simple techniques, you can do without this button. - How to calculate root of the third degree
When solving some technical problems may need to calculate the root of the third degree. Sometimes this number is also called the cubic root. The root of the third degree from this number calls a number, the cube (the third level) is equal to this. That is, if y is the root of the third degree in the number x must satisfy the condition: y?=x (x is equal to y cube). - How to determine the density of hydrogen
Hydrogen (from the Latin for "Hydrogenium" - "feed water") is the first element of the periodic table. Widely distributed, exists in three isotopes – protium, deuterium and tritium. Hydrogen represents a light colorless gas (14.5 times lighter than air). In mixtures with air and oxygen is highly explosive. Used in chemical, food industry, and also as rocket fuel. Research is being conducted on the possibility of using hydrogen as fuel for automotive engines. The density of hydrogen (or any gas) can be defined in different ways. - How to convert ml to liter
The abbreviation "ml (Milliliter) oboznalsya volumetric characteristics of the relatively small amount of a substance. Milliliter is derived from the liter, thousandth. Liter and all its derivatives are not part of the SI. In this system, one Milliliterfrom corresponds to a volume equal to one cubic centimeter, and liter - equal to one cubic decimeter. - How to calculate arithmetic mean
The average value is one of the characteristics of a set of numbers. Is a number that cannot go beyond the range defined by the largest and smallest values in this set of numbers. The average arithmetic value is the most commonly used kind of average. - How to write numbers letters or words
Today are constantly faced with the need to write numbers, letters or words. Especially often such a need arises, when required, for example, in the invoice or payment statement to give sums of money, with numbers, verbal form. In order to do this, you should remember the following important points. - How to make ferromagnetic liquid
Experiments with ferromagnetic fluid are widely distributed in the form of videos on the Internet. The fact that this kind of liquid under the action of the magnet performs a certain movement that makes the experiments very entertaining. Let's try to do this stuff yourself. But first, find out what it is. - How to find the molar mass of gas
In the solution of chemical problems often need to know the molar mass of the gas.To determine molar masses from chemists there are different ways – from relatively simple that can be performed in the laboratory (for example, a method of pumping gas and using the equation Mendeleev-Clapeyron), to complex and require specialized scientific equipment. In addition, however, to determine the molar mass of a gas using a conventional periodic table. - How to name a planet
Planets are real and fictional. Fictional planet can be named anything, but, at least for the illusion of certainty, makes sense to adhere to the rules adopted in astronomy for naming celestial bodies. - How to solve irrational equations
So, what is the difference between the irrational from the rational equation? If the unknown variable to be under the sign of the square root, the equation is considered to be irrational. - How to find all factors of a number
The number b is called the divisor a whole number a, if there is an integer q such that bq = a. Usually considered the divisibility of natural numbers. The dividend itself will be called a multiple of the number b. Search all divisors of the number is carried out according to certain rules. - How to clean diesel fuel
Many are faced with the problem of diesel fuel purification from mechanical particles. Used during refueling of fuel tanks mesh filter is able to capture particles larger than 80 microns. Particles of smaller size can pass through the mesh filter of the fuel tank, thereby clogging fuel filters diesel.