What is dew???
Dew is a water vapor that undergoes a condensation process-the process of turning gas into a liquid. Dew usually appears in the morning, on the sidelines of a window pane or behind a leaf. The dew water in Islam is classified as "holy-cleansing" water-the right water is used for wudoo-along with snow, lakes, and rivers. Dew is common after rain or in the morning.
The process of occurrence of dew due to differences in air temperature. If the air temperature gets colder, the air will eventually reach the dew point. Dew point is the temperature at which the air is still able to withstand the vapor as much as possible. If the temperature of the air gets colder, some moisture will condense on the surface of nearby objects, for example on plant leaves. Dew forms well on clear and calm evenings. Dew also forms well when moisture is high. Conversely, when the cloudy sky objects become cool longer because the clouds radiate heat back to earth. When the wind blows, the air takes more time to cool down to the dew point. Thus the article of the process of occurrence of dew.