Critical relative humidity

Critical Relative Humidity (CRH) is a concept primarily used in the fields of materials science, environmental science, and meteorology. It refers to a specific level of relative humidity at which certain physical or chemical processes occur dramatically or exhibit critical changes. This can apply to a variety of contexts, such as: 1. **Hygroscopic Materials**: For materials that absorb moisture from the air, the CRH is the humidity level above which they begin to take up water significantly.