Principles of NTC thermometer measurement.PIR sensor wholesaler

　　Scientists often use relative humidity to describe the amount of moisture in the air. Simply put, it means imagining the air

　　It's a towel. If you pour out a glass of water, you can use a towel to absorb the water. But in fact, towels can actually absorb more water than a cup. Perhaps he can absorb five to ten cups of water. The amount of water vapor in water is only a portion of the water vapor that can be present in the air, so the relative humidity is a percentage. When the relative humidity is 100%, the air is saturated. Like a wet towel, the air can no longer hold water. When the relative humidity is 100% and the air is saturated, evaporation and deposition are in equilibrium. The amount of increased evaporation, as evidenced by reaching equilibrium, serves as a sediment of water.

　　Water vapor in the air is called humidity. Because the molecules of water vapor are so small that they cannot be seen, people studying humidity have developed creative methods to measure the amount of water vapor.

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