WHAT IS HUMIDITY? -TYPES OF HUMIDITY

HUMIDITY

WHAT IS HUMIDITY? -TYPES OF HUMIDITY
WHAT IS HUMIDITY? -TYPES OF HUMIDITY

Humidity refers to the content of water vapour present in the gaseous form at a particular time and place.
Humidity is measured by Hygrometer.

HUMIDITY CAPACITY 

It refers to the capacity of an air of certain volume at certain temperature to retain maximum amount of moisture content.Humidity capacity is directly related with temperature i.e., higher the temperature, higher the humidity capacity and lower the temperature lower the humidity capacity.

TYPES OF HUMIDITY

ABSOLUTE HUMIDITY 

The total weight of moisture content (water vapour ) per volume of air at definite temperature is called absolute humidity.It change with the change in temperature.The absolute humidity decreases from equator towards poles and from oceans to the continents.

SPECIFIC HUMIDITY

It is defined as the mass of water vapour in grams contained in a kg of air and it represents the actual quantity of moisture present in definite air.

RELATIVE HUMIDITY

It is defined as ratio of the amount of water vapour actually present in the air having definite volume and temperature (i.e., absolute humidity) to the maximum amount the air can hold (i.e., humidity capacity).
Relative Humidity = Absolute Humidity/Humidity Capacity ✕100
SATURATED AIR The air having 100% relative humidity is called saturated air
DEW POINT The temperature at which an air becomes saturated is called dew point.


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