Before understanding cloud seeding technology, we need to understand clouds. What are clouds and how do they form? We all studied in school about three states of matter. Solid, liquid and gas. If we talk about water, the three states of matter of water are Ice, liquid water and gaseous water vapour.
If something is converted from one state to another, that process has a name. When ice turns into water the process is called melting. If water turns into ice, then it is called freezing. If water turns into water vapour, it is evaporation or vaporization. And if water vapour turns back into water, it is known as condensation.
What happens is that there is a lot of water vapour in the air. If there is a lot of water vapour in the air, then we will say that there is a lot of humidity in the air. Lesser water vapour content means lower humidity. Now, when this water vapour rises in the atmosphere, as you know the higher we go from the ground, with the increase of altitude, the colder it gets. Like, it is very cold in the mountains.
