Cloud seeding is a rain-inducing technique that has been used for over 60 years. It involves introducing substances into existing clouds to encourage precipitation.
Here's a breakdown of the process:
- The Core Principle: Cloud seeding aims to enhance the natural precipitation process within clouds.
- Seeding Agent: The most common substance used for cloud seeding is silver iodide, a harmless compound (according to the provided reference).
- Mechanism: Silver iodide provides a nucleus, or a particle, around which water droplets can converge. This allows them to grow into ice crystals. Once the ice crystals become heavy enough, they fall as precipitation (rain or snow).
In summary, according to research, clouds are seeded by dispersing substances like silver iodide into existing clouds, providing nuclei for water droplets to condense and form precipitation.