What are the dangers of dust and what are the dangers of dust to humans?

Dust is the enemy of human health, and dust carries many bacteria, viruses and insect eggs everywhere and spreads diseases. Industrial dust and fine dust can make workers suffer from a variety of difficult occupational diseases, and excessive dust will also cause environmental pollution, affect people's normal life and work, and induce human respiratory diseases. Dust is also beneficial, because if there is no dust in the atmosphere, the sun's rays will not be absorbed, reflected, scattered and refracted, and the sky will be either too bright or too dark.

Without dust, the water vapor in the air cannot condense, and the surface of the earth will become arid and barren.

Reading "The Journey of Dust", I have a new understanding of this insignificant dust. The ubiquitous dust is not only annoying, it also has a beneficial side to human beings.

Dust is the never-tireless traveler of this world, drifting with the turbulence of the air. The air around us, from indoor to outdoor, from the city to the countryside, from the flat land to the mountains, from the desert to the ocean, has its whereabouts almost everywhere. A truly dust-free space can only be made in a laboratory.

There is so much dust floating in the air, which has a lot of effects on the change of weather. It turns out that the dust is still the little engineer who creates clouds and raindrops, and they will help the moisture in the air to condense into clouds and raindrops, without them there will be no white clouds in the sky, and there will be no heavy rain and light rain. Without them in the summer, the strong sunlight will shine directly on the earth, so that the temperature cannot drop.

This is the role of dust in nature. In the quiet air, the dust begins to differ'Speed drops. After many days of this, a layer of dust was laid on the roof, on the doors and windows, on the bookshelves, on the tabletops and on the floor.

The dust rises again by the turbulence of the air, and the wind blows them far away.

So where does the dust come from? Some are debris from rocks from the mountains, some are dried smears from fields, some are salt powder from the sea that evaporates from the waves, some are volcanic ash, and some are cosmic dust from interstellar space. These are natural dusts.

There are many kinds of dust that are harmful to human life. Ever since organics have joined the ranks of dust, you see, the danger has become even more serious. So what is the harm of dust to human life?

It can dirty our air, it can stain our houses, and sometimes they destroy our industrial products and turn them into waste. Moreover, the most serious thing is that dust is the destroyer of the respiratory duct, he they can make the nostrils blocked, the trachea inflamed, and the lungs injured, which can cause colds, epidemics, pneumonia and other infectious diseases.

In recent years, scientists have invented ways to trap dust with high-voltage electric currents. Humans are trying to control the travel of dust so that the ubiquitous dust is no longer a scourge for humanity but a blessing for humanity.

Benefits of Dust:

If there is no dust in the atmosphere, the light from the sun directly to the earth will not be absorbed, reflected, scattered and refracted, and the sky will be full of dust and blue, without wind, snow, rain, dew, glow, and rainbow.

Since dust is a hygroscopic particle, without its core, the water vapor in the air will not be able to condense, and it will be difficult for clouds in the sky to form, and the surface will lose the cloud cover, and it will become arid and barren, and the weather will either be too hot or too cold.

Without dust, many harmful rays in the universe would break into the Earth's surface unhindered and pose a deadly threat to humans and various living beings.

In addition to these benefits, dust condenses water vapor.

Let them become droplets, or else everything will be wet and the creatures will not survive.

Although dust has many problems, its contribution is immeasurable, it can enable the earth to gently obtain the sun's energy, and it can also make the atmosphere have enough condensation nuclei to increase the chance of cloud and rain formation; Regulate the temperature of the earth's surface to make it suitable for the survival and reproduction of life.

The downside of dust:

Dust is the enemy of human health, so people especially hate it, dust carries many bacteria, viruses and insect eggs everywhere and spreads diseases.

Dust industry dust and fine dust in workers' lives can make workers suffer from various occupational diseases, and excessive dust will also cause environmental pollution, affect people's normal life and work, and induce human respiratory diseases.

Dust is very harmful to computers.

Excessive dust may clog the CPU fan, cause the fan to stop, cause the CPU to overheat and burn out, affect the contact between the boards, and may also cause corrosion of the circuit board.