What is condensation? Detailed answer

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What is condensation? Detailed answer

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What is condensation?

Condensation is a process opposite to evaporation. During evaporation, a liquid turns into a gas or vapor, and during condensation, vice versa: a gas or vapor passes into a liquid or solid state. Condensation occurs when a volume of gas or vapor is compressed or cooled. During condensation, very interesting things happen. First, the transition from a gaseous state to a liquid one leads to a sharp decrease in the volume occupied by the same amount of substance.

Secondly, in this case, thermal energy is released into the environment, called the heat of condensation. For example, the condensation of each gram of water vapor releases 540 calories. Condensation occupies an important place in a number of processes occurring in the world around us. Water, evaporating from rivers, lakes, seas and oceans, cooling in the atmosphere, condenses again, resulting in the formation of clouds. Dew on grass and leaves appears when moisture-saturated air comes into contact with their cooled surface.

Condensation can occur right before your eyes if you take a glass of ice water outside on a hot summer day. Surely in such cases you have noticed that the walls of the glass "fog". This is due to the fact that the water vapor contained in the air, in contact with the cold glass, condenses on it.

Sometimes a substance can go from a gaseous state directly to a solid. This occurs when the temperature of the environment or surface on which the steam condenses is below freezing. It is this phenomenon that explains the funny fact that some people walking down the street on a frosty day have small icicles or frost on their beards and mustaches. The water vapor contained in the air, exhaled by a person, condenses on the hairs of the beard, becomes ice!

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Who and when went on strike while in space?

On December 28, 1973, the American astronauts who were on the Skylab station went on strike - to this day the only one in the history of space travel. This was the third crew on the station, consisting, unlike the first two, entirely of newcomers. However, NASA further increased the workload and the research program, as the previous crew coped with all the tasks and asked for additional ones. After declaring a strike, the astronauts cut off communication with the mission control center and spent the entire day relaxing and looking at the Earth.

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