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What Does Humidity Mean?

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Frances Bott Profile
Frances Bott answered
Humidity is the term that refers to measure of water vapour or moisture that currently resides in the air. Humidity in the air usual occurs after a period when there has been rain followed by warmth. This is because of the excessive amount of water that is evaporating and entering the atmosphere.

If the air is regarded as particularly humid and the temperature is high, this makes for a rather uncomfortable experience for us humans. This is because our hypothalamus gland is attempting to normalise our body temperature by initiating a sequence of sweating.

Normally, the sweat we secrete is evaporated and extracted by the air. This is turn is what makes us feel cooler. However, if the humidity of the air is already very high, the sweat that you secrete is not being absorbed into the atmosphere because there is already an excessive amount of vapour in the air.

Higher humidity is also the reason behind why we can wake up after a night of no rain, yet the grass is wet and covered in dew. This is because the temperature has dropped overnight and the water vapour in the air has materialised into actual water.

There are different terms for different types of humidity. These are mostly alternative ways of measuring humidity in the atmosphere. Firstly, there is the absolute humidity. This is regarded as the measure of vapour mass in a specific volume of air. This is often measured by calculating the number of kilograms of water vapour in a certain cubic metre of air.

Secondly there is specific humidity. This is where you measure the balance between dry air with very little or no vapour and humid air. Again, this ratio is measured in kilograms of water vapour present in a particular cubic metre of air. The third is relative humidity. This is recognised as the percentage of water vapour that is present in a combination of both air and water.
Anonymous Profile
Anonymous answered
The term 'Humidity' refers to the quantity of water vapor that is in the air at a given moment. There are three different ways to measure humidity, these are;
Absolute Humidity:- This refers to the mass of water in a particular volume of air. Absolute humidity is expressed as the number of Kilograms of water vapor per cubic meter of air.
Relative Humidity:- Relative humidity is the term used to describe the quantity of water vapor that exists in a gaseous mix of air and water. Relative humidity is expressed as a percentage.
Specific Humidity:- Specific Humidity is the ratio of water vapor to dry air in a particular volume of air. Specific Humidity is expressed as a ratio of Kilograms of water vapor to Kilograms of air

Generally speaking, Humid air is lighter and less dense than dry air, this is due to the fact that the a molecule of water weighs less than a molecule of Nitrogen or Oxygen. Under conditions of high humidity it can become increasingly difficult for the human body to maintain a suitable temperature. This is beacuse the evaporation of sweat from the body's skin is decreased.
Anonymous Profile
Anonymous answered
Humidity is the amount of water vapour in the air.The more the water vapours the more the humidity.
Glenn Profile
Glenn answered
Moisture in the air
Anonymous Profile
Anonymous answered
The cool tiny
Anonymous Profile
Anonymous answered
Humidity is the amount of water vapor in the air. Happens usually after a rain fall. Or a storm. Either one, same thing.
Anonymous Profile
Anonymous answered
It means the amount of water vapor that was found in the atmosphere at the particular point of time.
Anonymous Profile
Anonymous answered
There are creating more and more comfortable situation for trees ,plants ,vegetable like and also make a cold place.

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