What is the blue sky like?

The sky is clear and blue, like crystal clear water polo, like sea water. This description is not only a description of the sky, but also a praise of the ocean. The ocean is the largest water body on the earth, with a vast area and rich resources. The blue sky and clear sea water reflect each other, giving people a sense of tranquility and serenity.

When we look up at the blue sky, we seem to be in an endless ocean. The color of the sky is as clear and transparent as sea water, without any impurities. Sunlight shines on the sea through the clouds, sparkling and dazzling. The waves gently beat against the coastline, making a pleasant sound, as if telling us the story of the sea.

Characteristics of the blue sky:

1, pure and transparent: the blue sky is usually considered pure and transparent, because there are relatively few gases and other particles in the atmosphere, so sunlight can penetrate the atmosphere and form the blue sky we see.

2. Rich colors: Although the blue sky is mainly blue, the color of the sky will be different under different weather conditions and observation time. For example, at sunrise and sunset, the sky may appear pink, orange or purple. On cloudy days, the sky may appear gray or white.

3. impermanence: the color and shape of the sky will change with the change of time and weather. For example, as the sun rises and sets, the color of the sky will change from blue to red, and then from red to blue. The shape of the sky will also change under the cover of clouds.

4. Deep and boundless: the blue sky seems to have no end, which is an optical illusion. In fact, the boundary of the sky is outside the earth's atmosphere, and humans cannot directly observe it.

5. Mystery: The blue sky always gives people a mysterious feeling, because the sky contains countless stars and galaxies, and there are many mysteries of the universe that human beings have not yet solved.