Artificial rain can be formed by spraying of silver iodies over clouds .Explain
Answers
It make the water droplets heavier thus, leads to artificial rain
It works just like alum
Artificial rain is the process of cloud seeding, which is a type of weather modification that aims to change the amount or type of precipitation that falls from clouds dispersing substances into the air. Artificial rain is produced by spraying clouds with substances like Silver Iodide or cheaper available options like solid carbon dioxide (dry ice) or even finely powdered Sodium Chloride.
Delhi Artificial Rain
In a condition where there are clouds, but no rain, it is a phenomenon called super cooling. In such a situation the temperature of the cloud might be close to zero and there can even be crystals of ice in it. The water vapor in the cloud does not condense to liquid water. The super cooling gets disturbed by spraying the cloud with the chemicals, using a airplane for the purpose.
How is artificial rain produced?
The process includes three stages, the first is agitation, second is called building-up stage and the third bombardment of chemicals. This process involves using chemicals to stimulate the air mass upwind of the target area to rise and form rain clouds. These clouds are capable of absorbing water vapor from the air mass thus stimulating the condensation process in the clouds.
During the second stage, the cloud mass is built up using chemicals like kitchen salt ammonium nitrate and occasionally calcium chloride. Then during the third stage chemicals such as super cool agents like silver iodide and dry ice are used to reach the most unbalanced status which eventually leads to the formulation of droplets and make them fall as raindrops.