Humidity 100% is the concept of relative humidity.
Humidity is a concept that describes the amount of moisture in the air. When it is said that the humidity is 100%, it means that the air is saturated and can't absorb any more moisture, or it can be said that the relative humidity is saturated. Generally in this case, the water vapor pressure in the air is equal to the saturation vapor pressure of water at that temperature. Reaching 100% humidity usually means that the water vapor in the air begins to condense, forming fog, dew, or rain.
It is important to note that 100% humidity does not mean that the air is full of water, but rather that the air can no longer absorb more water vapor at the current temperature. In fact, even at 100% humidity, the amount of water vapor in the air is a very small fraction.
The humidity is too big to come down the method has:
1, indoor humidity, if the weather is relatively large, when the weather is clear, you can open the window to ventilate the air, you will be able to avoid the problem of excessive humidity. And ventilation time is best chosen in the morning to 8:00 to 9:00 this time period or in the afternoon. But if it's raining outside, you can't open the window at this time, or the humidity will be even greater.
2, indoor humidity down, you can also turn on the air conditioning or dehumidifier, through the operation of the equipment, which can effectively absorb moisture, the effect is still very good. Especially the air conditioning, for the entire interior can play a role in absorbing moisture.
3, rainy season, you can use a cloth wrapped in quicklime or charcoal, placed in all corners of the room, can play a role in absorbing indoor moisture.