Question

What is the basic difference between absolute humidity and relative humidity?

Answer 1

Hint: Humidity is the percentage of water vapor in the air. If there is a lot of water vapor in the air, the humidity will be high. The higher the humidity, the wetter it feels outside. On the weather reports, humidity is usually explained as relative humidity. Moisture from humid air settles, or condenses, on electronics.

Complete Step by Step Answer:
on the other hand relative humidity is the ratio between the water vapour actually present in the air and its capacity to hold water vapour at a given temperature.

Humidity is measured in 2 main ways:
1.Absolute humidity
-When the weight of water vapour is illustrated with respect to the unit volume of air is called absolute humidity. It is the substantial amount of water vapor per unit volume of gas at given temperature and pressure.
- It is expressed in g/m3. It is primarily defined by the nature of the surface under the air mass.
- It is independent of temperature.
For example, if the water vapor in 1 cubic meter of air weighs 30 grams, the absolute humidity of the air is 30 g/m3.
Therefore, Absolute humidity = Mass of water vapor/Volume of air

2.Relative humidity
-The relative humidity, on the other hand, is the ratio of the amount of water vapor present in the air to the amount present at a given temperature.
-It is expressed as a percentage. Generally, it is the quantity of water vapor that is present in the air, compared to the amount it could hold at that given temperature.
-It is totally dependent on temperature.
-If the amount of moisture in the air remains constant, the relative humidity decreases as the temperature increases and vice-versa.

Note: Relative humidity is used in a wide range of applications including air-conditioning applications and drying methods. Absolute humidity is not frequently used to convey the moisture content of air because it is sensitive to fluctuations in both the temperature of the air and atmospheric pressure.