Humidity And Relative Humidity

"The amount of water vapour present in air at a given temperature is known as Humidity."

➡The amount of water vapour in air changes with change in temperature.

➡Maximum  amount of water vapour contained in the air at particular temperature is  called as Saturated air of the temperature.

➡Higher the temperature, more is the capacity of the air to hold water vapour.

➡If the temperature of agitated air is increased then it becomes unsaturated and if the temperature of the air is decreased then it is  saturated with condensation of water vapour.

➡Dew is formed during night due to condensation of excess water vapour with fall of temperature.

Relative Humidity:

"It is defined as the ratio of mass of water vapour present in 1 cubic metre of air at a certain temperature to the mass of water vapour required to saturate 1 cubic metre of air temperature known as relative humidity."

➡It is expressed in percentage.