Relative humidity measures how much moisture is in the air compared to how much it could hold at a given temperature. It is simply the dew point temperature divided by the air temperature, times 100.
I know in Houston, we hear the term humidity which is used to correlate to how muggy it may feel outside. But what actually is humidity and what does it represent? Humidity is the measurement of water ...
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Why relative humidity damages artifacts

Relative humidity plays a critical role in the preservation of cultural heritage. This episode breaks down how moisture in the air interacts with temperature, why fluctuations are especially dangerous ...