What is a wind rose? Detailed answer

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What is a wind rose? Detailed answer

Big encyclopedia for children and adults

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What is a wind rose?

This is a vector diagram showing the strength and direction of the wind in a given location based on long-term observations. The diagram has the form of a flower or a multi-beam star, the direction of the rays of which shows the direction of the winds, and the length of the rays indicates their frequency.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

What is a sense of balance?

If you've read about human spaceflight, you've probably noticed that one of the problems scientists have to deal with is the loss of balance more and more as the ship moves away from the Earth's gravity. A sense of balance is the body's ability to adapt to different conditions, depending on its position relative to the Earth, which attracts everything that is nearby from it. Without a sense of balance, birds could not fly, people could not walk, and no living creature could navigate in space.

A person has two organs of balance, and they are located in his head next to each ear. Each of these parts is like a sac and is filled with a fluid called lymph. Inside, these sacs are lined with sensory cells with hairs. When the head is in a vertical position, the pressure on the hairs is the same from all sides, and when tilted to one side or another, it changes. At the same time, sensitive cells are irritated and send impulses along the nerve fibers to the brain. And the brain forces certain muscles to work, which bring the body from an inclined position to a correct, vertical one.

Our balance organs also help us to become aware of the direction of our movement. Imagine that we went for a ride in a car. When the car moves forward, our body involuntarily leans back against the back of the seat. Fluid, or lymph, in the "semicircular canals" of the organs of balance deflects sensitive hairs back. As a result, certain nerves with which they are connected send the appropriate signal to the brain - and we begin to feel that we are moving forward.

So, our body deviates back, and at the same time the lymph moves with it. After some time, sensitive hairs take a vertical position, and we cease to feel the movement of our body forward. Now imagine that the driver has applied the brakes. Our body by inertia still continues to move forward, and the lymph also moves in the organs of balance, tilting the hairs forward now. The corresponding impulse is sent to the brain - and we begin to feel that we are stopping.

In each organ of balance there are three semicircular canals, each of which corresponds to three directions of movement in space. The sensory hairs in these channels help us know if we are moving up or down, forward or backward, right or left.

Test your knowledge! Did you know...

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