Where does wind come from? Detailed answer

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Where does wind come from? Detailed answer

Big encyclopedia for children and adults

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Where does wind come from?

The reasons for the appearance of wind can be considered in different ways. First, you can consider the wind in relation to your area and, secondly, in relation to the entire surface of the Earth.

In any area there is a pressure difference, so the wind blows in the area. If you live on the coast, you can watch it every day. During the day, the land heats up, the air above the land rises, and the cold wind from the sea takes its place. At night, the land cools down, but the water remains warm, the warm air above the water rises, and the breeze is already blowing from the shore, taking the place of the warm rising air.

What is happening in our area is happening to the wind and on a large scale on the globe. The equator is the warmest place on Earth. Therefore, in this band, warm air constantly rises. This air is directed towards the poles, north and south. Then, at certain latitudes, called "horse latitudes", it descends and continues its movement, but already in two directions - towards the poles and the equator.

If there was no rotation of the Earth, only north and south winds would exist. But due to the rotation of the Earth, all winds in the Northern Hemisphere shift to the right, in the Southern Hemisphere - to the left. Winds blowing from the "horse latitudes" towards the equator are called "trade winds", towards the poles - "wests".

Other parts of the globe also have their own "dominant winds". As you already understood, winds do not come from anywhere, the reason for their appearance is in varying degrees of heating of the Earth's surface in its different regions.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Which railway line is the longest in the world?

The longest railway line on the planet is the Trans-Siberian Railway (Moscow - Vladivostok), the actual length of the main passenger passage of which is 9288,2 kilometers.

The Trans-Siberian Railway passes through the territory of two parts of the world: Europe (0-1777th kilometers) and Asia (1778-9289th kilometers). Europe accounts for 19,1 percent of the entire journey, Asia - 80,9 percent. There are 87 cities along the highway. 5 of them have a population of over 1 million people (Moscow, Perm, Yekaterinburg, Omsk, Novosibirsk). 14 cities are the centers of subjects of the Russian Federation.

On its way, the Trans-Siberian Railway crosses 28 rivers, of which 16 are large (Volga, Vyatka, Kama, Tobol, Irtysh, Ob, Tom, Chulym, Yenisei, Oka, Selenga, Zeya, Bureya, Amur, Khor, Ussuri). 207 kilometers of the road were laid along the shores of Lake Baikal.

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Reduced power consumption of the graphics core 14.02.2014

Intel has developed a new integrated graphics core that it says can improve the battery life of smartphones, tablets and laptops. As Intel spokeswoman Divya Kolar points out, graphics can use a lot of energy, but the new energy-efficient GPU core paired with the company's CPU can achieve a fundamental reduction in energy consumption.

"This graphics core includes a number of new features that increase energy efficiency by 40% - resulting in mobile devices with more battery life for the same performance, or increased performance when needed," she wrote in a company blog.

The graphics core was developed by Intel specialists. The company spoke about the technology at the International Solid State Circuits Conference in San Francisco. It is worth noting that the graphics may soon be used in the company's chips. The fact is that the current core is designed for a run-in 22-nm process technology. However, Intel does not say which commercial chips are in question, saying only that this is a single-chip system (it can be assumed that energy-efficient graphics will appear in the Atom series processors for tablets and smartphones). So far, the GPU is being tested on a prototype processor in Intel's research labs.

Promising technologies developed in the depths of Intel eventually (not always soon) are being introduced into final consumer products. For example, many of the graphics and computing technologies from Intel's Larrabee discrete graphics project are now used in the company's integrated GPUs, as well as in the highly parallel Xeon Phi server processors.

The company says that the main cost savings in mobile chips are usually achieved by developers by lowering the operating voltage of the chips. Taking advantage of 22nm technology with 3D transistors enables high performance even at lower voltages. However, despite the 3D transistors, some specialized blocks (like memory arrays) inside the graphics core act as a noticeable limiter for the entire chip in terms of the minimum voltage (Vmin). The new GPU design uses a special method of selectively boosting the Vmin voltage for individual chip blocks (primarily for memory arrays). This resulted in a large increase in energy efficiency.

To achieve additional savings, Intel has improved the operation of intelligent adaptive control circuits for power consumption of the chip (primarily frequency and voltage depending on the load). Another feature of the new Intel graphics core is the ability to very quickly switch to standby mode, in which energy savings are 10 times more powerful than active mode - this is another way to save energy in mobile devices. The number of blocks that can go into standby mode on their own or turn off completely has also been increased.

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