What is the change in the state of fog dispersion?

The dispersion of fog belongs to the change of vaporization state.

The principle of fog elimination:

The dissipation of fog belongs to vaporization. Fog is formed by the liquefaction of water droplets suspended in the air by water vapor in the air. When the fog gradually dissipates, the small water droplets suspended in the air are evaporated into water vapor.

The appearance of fog is that the water vapor in the air cools and condenses into small water droplets to form fog, and the secondary process is liquefaction. When the sun comes out, the temperature rises, the water droplets turn into steam when heated, and the fog disappears. The second process is evaporation.

Vaporization refers to the phase change process of a substance from liquid to gas. Evaporation and boiling are two forms of substance evaporation. The former is the vaporization on the liquid surface, and the latter is the vaporization in the liquid when the saturated vapor pressure is equal to the external pressure.

Analysis of fog:

The state change of fog is formed by evaporation-liquefaction of water.

When the water vapor in the air is sufficient, the breeze and atmosphere are stable, and the relative humidity reaches 100%, the water vapor in the air will condense into fine water droplets suspended in the air, which will reduce the ground visibility. This weather phenomenon is called fog.

The formation of fog needs to meet the following conditions:

There is enough water vapor in the air, the temperature in the air is lower than the saturation point of water vapor, and some tiny particles, such as dust and smoke, can be used as condensation nuclei to condense water vapor into water droplets. The shape and characteristics of fog are closely related to factors such as temperature, humidity and wind power.

In the case of low temperature and high humidity, the fog will be very thick, which can block the line of sight and affect traffic and visibility. In the case of high temperature and low humidity, the fog will be thinner, which will not have much impact on traffic and visibility.

The appearance of fog has a certain impact on the ecological environment and human life. In terms of ecological environment, fog can provide water and nutrition for plants and promote their growth. In human life, fog will affect traffic and visibility, increase driving difficulty and accident risk.

In a word, fog is a common natural phenomenon, which is a gaseous substance formed by condensation of water vapor under certain conditions. Understanding the formation and characteristics of fog is helpful to better cope with the influence of foggy weather.