Category Archives

374 Articles

General

Repair Bicycle

Posted by on

Repair a bicycle. Modern bikes are quite reliable. You only have to monitor its technical condition, regularly greased. And to change the chain, cassette and chainring, which wear out. The frequency of replacement depends on the class of hitch is used on your bike and your riding style, but usually they do not have enough for one thousand kilometers. Repair a bicycle – no easy matter. Although not for everyone.

Some spend days and even nights may be happy to repair bicycles. How, for example, some masters of the bicycle shop I think you should not talk about all the wisdoms configuration switching speeds: it is easier to go to a specialist workshop, which is every self-respecting store. But there are subtleties that just can not know the rider: pull the brake to straighten 'eight', seal the wheel I note that the repair is needed universal key, which can be bought in almost every bicycle shop for about 250-300 rubles. So, in order: How to tighten the brake. At the bottom of the brake handle is curly nut, and on her wheel. In order to make the brake more elastic, it is necessary to unscrew the nut and lock a wheel, which is on it. To weaken to do this same operation, only in reverse.

But it is at an early stage. If the twist is nowhere, then find the brake pads (y wheel rim), there is mounting cable. And weaken the nut. After loosening the pull on the cable itself and tighten the screw.

General

El Dorado

Posted by on

He is considered the color of perfection. White means safety, purity and cleanliness. Unlike the black, white usually has a positive connotation. It may represent a successful beginning. Silver: It is a sign of purity, integrity, obedience, firmness, vigilance, eloquence and maturity in heraldry, white represents faith and purity.

Indirect association, angels are often represented as images dressed in white robes. Yellow: The yellow symbolizes the sun. It represents joy, happiness, intelligence and energy. Yellow suggests the effect of warm, causes joy, stimulates mental activity and generates muscle energy. It is often associated with food. In heraldry, yellow represents honor and loyalty.

In recent times the yellow is also associated with cowardice. The yellow represents intelligence, originality and joy. Orange: Orange combines the energy of red with the happiness of yellow. It is associated with joy, sunshine and the tropics. Represents enthusiasm, happiness, attractiveness, creativity, determination, success, courage and encouragement. It is a very hot color, so it creates a feeling of heat. However, the orange color is not aggressive as red. The orange color vision occurs feeling more oxygen to the brain, producing an energizing effect and stimulate mental activity. In heraldry, orange represents the strength and endurance. Orange combines the energy of red with the happiness of yellow. It is associated with joy, sunshine and the tropics. The reddish orange evokes desire, sexual passion, pleasure, dominance, desire for action and aggression El Dorado creates a feeling of prestige. The gold means wisdom, clarity of ideas, and wealth. Often represents high-quality gold.

General

Earth Life

Posted by on

What is studying biology. You are beginning to study the basic biology (from the Greek words "bios" – the life and "logos" – the doctrine). Biology – the science of life, of living organisms that inhabit the Earth. Living organisms on our planet is very varied. That – and the people and animals, and plants, fungi and bacteria.

Scientists there are more than 3.5 million species of living organisms. They live on land, water, air. Scope of life is a special shell of the Earth – the biosphere (from the Greek words "bios" and "sphere" – a ball). The biosphere includes the lower atmosphere, water bodies, soil, the upper layer of the lithosphere. Biosphere area of distribution of life Biology studies the structure and vitality living organisms, their diversity, the laws of historical and individual development. All living organisms are closely related to each other and with the habitat. Living organisms affect the environment, and their existence depends on conditions of this environment. Section of Biology, who studies the relationship of organisms among themselves and with their environment is called ecology (from the Greek word oikos – a house, apartment, home – and "logos").

General

Vector Time

Posted by on

Let us recall the most basic concepts of speed, which teach in school, namely that speed – is a vector quantity. Those who remember that this vector is well known that the vector has a direction, moreover, the vector may not always be unidirectional. If time is inextricably linked with the speed that time – it's too vector quantity. And this is, in turn, suggests that it is tied to the direction of the velocity vector, that time can not be unidirectional, and this is quite easy to verify in practice. Take, for example, any movie. Until then, until we begin to view it, it does not speed, and hence the time it stopped. One may recall that a similar, we have already encountered when in the article "Speed" crossed the border the speed of light: no moving object in the form of material particles, so the movement of time is also absent. Including film, we turn and his time, and we can even adjust the speed of time.

And if we can turn in a movie clock? Without problems, but under one condition: we should have a movie player, remote control, so – and time. Without it, the movie with a given rate will move in one direction only. Does this example of an analogy with human life? Yes, the most direct. We move through life movie called "Destiny" in one direction and the one given velocity. Can a person change the speed and direction? Of course, can – this is the so-called time machine.