Talk about the role of dust in the air

Tell me about the role of dust in the air.

1. Dust has the functions of scattering, reflecting light and condensing water vapor. Light travels in a straight line, and hundreds of millions of dust scatter and reflect light in all directions, making the world appear bright.

2. The dust has the function of a reflector, reflecting a part of the sun's radiating car projected on it into the universe. In summer, when the sky is full of dust, the daytime temperature is not too high, which is also the reason. Dust can also block some harmful rays from entering the Earth.

At the same time, there is more fog over cities than in the suburbs, and the reason for this is that there is more dust in the air in the cities than in the suburbs. Gear rush.

3. Dust is a hygroscopic particle, which can be used as a condensation nucleus, so that the surrounding water vapor can condense on it. As a result, the water vapor on Earth is constantly evaporating, and dust is condensing the water vapor in the sky above.

It means that there is some dust flying.

A lyric from Eason Chan's "Salon" "Life is not waste, where does the dust fly".

It means: "Life is not barren and empty, as long as the heart is wide enough, how can there be any dust and void flying." ”

The lyrics of "Salon" talk about the relationship between photography and life, describing photography as taking pictures of every detail of life to retain time and memory. The strong emotions of the era song of the era are reappearing, and the solo in the middle brings back the most emotional Eason Chan.

Dust scatters sunlight, so we see the whole sky bright during the day, and if there is no dust, then we can only see a bright sun during the day, and the rest of the sky is as black as the night.

Dust also acts as a condensation nucleus for water vapor condensation, and without dust, the air will not condense into rain, even if it is saturated.

To put it simply, the air is not polluted.

A: The description of watching the dust fly uses a descriptive and dynamic vocabulary to illustrate it.

By observing the phenomenon of dust flying in the air, this way of describing vividly shows the state and dynamic process of things by using detailed depiction techniques and vivid dynamic vocabulary. For example, the dust is flying, which highlights the scene of dust fluttering in the wind.

This method of illustration is often used in literary creation to depict scenes, characters or actions, etc., in order to enhance the vividness and appeal of the work. Through dynamic descriptions, it is easier for readers to have a sense of substitution and stimulate their imagination. In addition, there are a variety of writing techniques such as metaphor, personification, symbolism, etc., which can be used to enrich the expressive source of the text.