1. Used as a developer and a catalyst in artificial precipitation. 2. A mixture of silver iodide and silver bromide can produce photographic emulsions. In artificial rainfall, it is used as an ice nucleation agent; it can also prevent hail, frost, snow and storms. It can be used as a raw material for thermoelectric batteries. Used as a catalyst in chemical reactions. It is also used in the pharmaceutical industry. 3. Trace analysis of cesium. Artificial rainfall. photography.