Water cycle: Moisture
Moisture:
In the nature, water vapor condensation is an important stage of the water cycle, causing particular dew, clouds and rain, snow, frost or some forms of ice (freezing fog, which is a form of sublimation). One can experience this change of state in a shower where, on the cold mirror, water vapor in the air condenses into droplets.
The difference between evaporation and precipitation describes the source term of atmospheric moisture. When evaporation exceeds precipitation in a particular region, moisture is added to the atmosphere and when precipitation exceeds evaporation, moisture is withdrawn from the atmosphere
In applied thermodynamics, the bodies are in the liquid or gaseous state. The term "saturation curve" means all the points that connect the changes of state of a body. The water vaporizes at 100 ° C at normal atmospheric pressure. If we lower the pressure, for example in a condenser, we can have water vapor at a temperature of 30 °C.
