The ice saturation ratio at which 1% of aged silver iodide and lead iodide aerosol particles nucleate ice from moist air is observed to depend on temperature. Between roughly −30 and −67°C the ...

When Did Cloud Seeding Start? This method started in 1946 by scientists at the General Electric Research Laboratory. They discovered that they could use silver iodide -- an inorganic compound -- and ...

The performance of a silver iodide smoke generator, mounted on an aircraft, was measured in flight. The ice-nucleus output was 1014 per gram of silver iodide active at −15C and 1012 at −10C.

Cloud seeding uses an already existing cloud and injects silver iodide into the cloud, which adds tiny particles called ice nuclei (which water needs to freeze). Clouds, in basic terms, are a ...