Why and how does a rainbow appear? What natural phenomenon is the basis of a rainbow? Why is the rainbow multi -colored? Is there a rainbow in winter?

If you do not know why the rainbow appears, then read the article. Here you will learn details about this natural phenomenon.

Almost everyone at least once in his life, but saw a beautiful phenomenon between heaven and earth - a rainbow. In this phenomenon there is something that awakens a feeling of delight. Seeing a rainbow, no one can take his eyes off her. People try to show this sight to their friends that they are at that moment next to them. In the old days, the ancient Slavs considered such a phenomenon of God, which portends good news and luck in deeds. And it is not surprising, because the rainbow, as it appears from nowhere, disappears nowhere.

What is a rainbow, what does it look like?

The rainbow is a curved arc from multi -colored rays. Sometimes it is visible in the form of a semicircle. Interestingly, it is formed from moisture drops in the air thanks to the sun's rays. In this case, the sun should illuminate these drops. To do this, it should be low above the horizon. And to a person to see a masterpiece of nature, you need to stand in front of the rain and back to the natural source of light.

Why and how does a rainbow appear, what is the phenomenon of nature at the basis of a rainbow?

The rainbow appears due to dispersion - refraction of sunlight at different angles, which gives a different tone of color to these rays. There is another phenomenon - the winter halo of the Sun. From a scientific point of view, such a phenomenon of nature is called Galo. Usually it manifests itself when on the street increased humidity, great frost, the sun. This is not very common. But the halo around the bright winter sun is visible much more often than a rainbow.

Increased humidity in the atmosphere in winter provokes the formation of small ice crystals, sunlight, illuminating them, are refracted. Thanks to the process, an eagle with a reddish tint appears. If you are lucky, then you can observe in winter a glow of all shades and colors of the rainbow. It is a pity that such a phenomenon is not very common.

The rainbow can appear at an altitude of almost six kilometers. A large role in the refraction of sunlight is played by cirrus clouds. They are also a refractive barrier.

Galo differs from the rainbow in that:

• It can be seen around the sun, and the rainbow can be seen in the space between heaven and earth.
• The color shades of the rainbow, as a rule, consist of seven colors, and Galo has a reddish tint and orange.
• The rainbow is an arc, and Galo is a circle.

Rainbow and rain: relationship

There will be no rainbow without high humidity. Therefore, rain is a harbinger of the dispersion of the dispersion in the air. Well, as mentioned earlier, a light source is necessary.

Interestingly, the rainbow is formed next to waterfalls or in sunny weather next to lakes, rivers and other reservoirs.

It has different width, brightness. Much depends on the size of the drops through which the beam of the sun passes. The more drops, the more expressed the rainbow in the sky, and its width is smaller. Accordingly, a wide and less bright rainbow is formed using a dispersion of small drops.

IMPORTANT: Thanks to the lighting of the sun's rays of billions of drops in the air, a person can see a multi -colored arc or even two arcs that play with different shades of tones.

Why is the rainbow multi -colored?

The rays of the sun have white. When they pass through drops of water, the rays are refracted and different colors are obtained. Why? Because the drop is not even and the rays are refracted at different angles, give various shades.

What are the colors of the rainbow: the names and the sequence of colors in the correct order

How the rainbow appears already clarified. From the course of physics, you know that the rainbow consists of many shades of colors. Refracted rays have no clear boundaries, they gradually pass from one color to another, forming intermediate tones. That's just the human eye is not given to distinguish the entire diverse gamut of colors.

The shortest rays of a person are displayed in red, orange, and long rays have blue, purple.

Despite many shades in the rainbow, a person can notice only seven of them. To make it easier to remember them, they came up with a cheerful verse, where the initial letter of the word corresponds to each color.

• TOrasny - toangry
• ABOUTwound - osee
• ANDelite - andeat
• HeLEND - hnate
• Golubu - gde
• WITHillegitimate - withit takes
• Fiolet - fazan.

IMPORTANT: Whatever the rainbow, colors are always formed in the order that it is described above.

How to look at a rainbow to see a rainbow clearly?

Probably everyone noticed that one person sees a rainbow, and the other is not. Much depends on where it is in relation to a multi -colored arc. The individual should stand with his back to the sun, and the brightest arc can be seen if you stand at the corresponding angle to the refracted rays of the rainbow. The optimal angle is 42 degrees.

At what time of the day you can not see a rainbow?

The phenomenon of refraction of the rays of the sun through the drops of liquid in nature can be seen at any time of the day, except for the night. And when the darkness on the street manifests a different glow and it is called differently-Galo. It looks like a halo around the moon.

IMPORTANT: At sunset, the rainbow is especially bright with a reddish tint. Such a spectacle as fascinates, so a little scares people.

Is there a rainbow in winter?

In winter, the rainbow is displayed in pale colors. It can only be seen when there is the sun in the sky, that is, in the morning, day and in the evening before sunset. Rainbow manifests itself in frosts extremely rarely. That is why many argue that it does not exist in winter. Despite such statements - it still happens in cold weather.

Video: What is a rainbow?