The swallows are beautiful little birds, bright-eyed inhabitants of urban and rural landscapes. Every spring they arrive, hatching and in the fall they leave their homes. Where to go to spend the winter these birds?

Chocolate is one of the most favorite treats children and adults. If you have guests, you can serve tea box of candy, if you want to thank people - you can prepare a bar of chocolate as a gift, but if you decided to visit friends with kids - chocolate will be a pleasant surprise for the kids. So often these Goodies are purchased and stored for future use at home, and after some time it may appear white patches.

Power is expressed not only in watts but also in derived units: micro - and milliwatts, kilowattsOh megawatts. The designation "mW" and "MW" not equivalent: the first refers to milliwatt and the second megawatt.

Cold fire is a chemical term, denoting a form of low-temperature flame. As you might guess, the main feature of this substance is that it can be touched in the literal sense of the word. I think you saw on the Internet or movie characters drops fireballs. In most cases, it's computer graphics, however, the technology of cold fire is also widely used in television. To create the "miracle" at home easily.

How to distinguish the Nickel silver from silver? This question is quite relevant. Often, finding the old thing, think, throw it out or leave it, is it of any value or just takes place. Externally cupronickel and silver to distinguish not easy, but if you follow a few tips, this task is much easier.

For many current consumers require stable power sources. The main part of the circuits that output a stable voltage is a semiconductor Zener diode. This element provides the same output voltage, independent of the quantities consumed by the load current. To verify serviceability and normal operation of this part in several ways.

Any point on the terrain has its own geographic coordinates. With the advent of gps accurate positioning ceased to be a problem, but the ability to understand the map – in particular, to establish the latitude and longitudeis still quite relevant.

Pure rubbing alcohol at home sometimes is used to obtain the alcoholic beverage. However, dilute this alcohol needed in the correct proportions, and also to observe a few important rules. Otherwise consequences of the use of incorrectly diluted alcohol can be unpredictable.

Since the main method for the determination of body weight – weighing in everyday life the concept of body mass and body weight have long been synonymous. Typically, when referred to body weight, it means its mass. In physics, weight is the force of impact of the body on the suspension or support, which arises because of the gravitational attraction of the Earth. Body weight can change in rather wide limits – from zero gravity to huge overloads. The weight of the body almost constant feature of the physical body.

The calculation of the calorific value of the gas requires, as a rule, owners of houses and cottages for payments with gas suppliers. Blue fuel in this case is used to keep the heat in the room and heating water, and these utilities are measured in Gcal.

The basic unit of current is ampere. For example, a current of 1 ampere (A) flows through the light output of 220 Watts connected to the mains with voltage of 220 Volts. In modern electronic technology, especially a miniature, you use currents, typically much smaller force. For measurement uses a special (fractional) unit of current is the milliampere (mA).

On the sky naked eye can see five planets – mercury, Venus, Mars, Jupiter and Saturn. Sometimes they disappear, and to observe, need to use binoculars or even telescopes. However, the periods when they are visible, are quite frequent and lengthy. Just need to know what part of the sky they are, and their distinctive features.

Weather forecasts often heard the barometric pressure in mm Hg. In science use more traditional units of Pascal. Of course, there's a clear relationship.

The conductive adhesive is suitable for the connection providing electrical contact between the parts. It is used, if soldering is impossible or undesirable. For example, in cases when you need to connect the parts, are afraid of the heat. This glue is also used to restore conductive pathways in calculators, electronic watches and other miniature devices. It can be used for bonding electrical contacts to aluminum, which is known to be poorly soldered. Buy this glue at the store difficult, so it is better to do it yourself.

Liquid nitrogen is a chemical compound, usually used for quick freezing. Although this compound is more commonly used in scientific laboratories, it can also be used at home. In the process of making liquid nitrogen should be treated with caution, as it can be dangerous.

Modern Economics considers everything. It often happens that the transactions between entrepreneurs for releasing the consignment of goods are made not on the basis of displacement and its actual volume. In this regard, consider the most frequent variant – translation of liters of gasoline of different grades in tons.

The coefficient of transformation is the main characteristic of the transformer. It shows how to change the main parameters of the electrical current after it passes through the device. When the ratio of transformation of greater than 1 is called a step – down transformer, if less increase.

Aqua Regia is a mixture of hydrochloric and nitric acids. It has a strong oxidizing capacity, therefore, capable of dissolving even gold. Hence the name – once this acid corrodes the "king of metals - gold, then the name came up, too "Royal".

Decline call motion of a body in the gravitational field of the Earth. Its peculiarity is that it always takes place with constant acceleration, g≈9.81 m/S2. It should be considered when the subject is thrown horizontally.

The current consumed by an appliance depends on its power and on the voltage of the power supply. It current consumption is determined by the minimum cross-section of the wires used for supplying to the load the supply voltage.

Water freezes at a temperature of 0 degrees Celsius. Suppose you urgently needed for some purposes the ice. How to get it? It would seem that is easier: you just have to swear jar with the liquid in the freezer. But the water, due to the very large specific heat capacity, cools slowly, and the formation of ice can take a lot of time.

Calculation of power consumption is often made for bodies operating from the electrical energy. Maximum consumed power is called nominal and specified in the consumer or in the technical documentation. If the device does not operate in nominal conditions, the consumed power can be calculated independently.

Sometimes it is necessary to increase the power flowing in an electric circuit current. This article will discuss the main ways to increase the current without the use of complex devices.

In everyday life we are constantly confronted with electrical devices that operate from AC. In modern household wiring there are three wires that are loosely referred to as "phase", "zero" and "ground". Therefore the installation of electrical appliances must be able to distinguish "phase" from "zero".

For proper orientation on the terrain and the desired direction of movement using the compass , you must determine a magnetic azimuth. Magnetic azimuth – horizontally disposed angle measured clockwise from the magnetic Meridian (aimed at magnetic North) to the direction of the object. The value of the magnetic azimuthand can be from 0 to 360 degrees. There is a direct and inverse magnetic azimuthis used, respectively, for movement to the selected object or in the opposite direction.

Jade is an ornamental stone, widely used since ancient times. In Asia, primitive people used it for arrowheads and spearheads made of it knives and axes. Later, in China, it created ritual and cult objects. In nature, this stone is found in various shades of mostly white to all shades of natural greenery. To distinguish jade from other stones and fakes if you know some of its properties.

The volume parameter of solid, liquid and gaseous bodies that defines the set of dimensional characteristics of the body. Mathematically it is a product of length, width and height of the body. That is why in the international system of units it is measured in cubic meters. But often in life there are other units of volume such as liter, milliliter, cubic centimeter.

In most recipes, many ingredients are indicated in grams. How to take the right amount of product when you do not have accurate kitchen scales? Actually can be quite simple to calculate how many milliliters will be in the number of grams. And measure out the desired amount in a measuring Cup it will be much easier. Made a one-time measurement for a specific product you can save. So pretty quickly you will receive your own table, frequently used dimensional values.

On any geographical map you can see about the following inscription: "Scale 1:100 000". Usually the first number is 1, and the second may vary. If it isn't there, then definitely there's a little Ticker, divided into equal periods, or nomogram. These signs designate the ratio of the size of an object on the map or plan to its real size.

On the packaging of any food product is indicated by its energy value, which is measured in calories or joules. Sometimes the energy value is indicated only in joules, and to put that number in calories, you need to know one simple formula.