Question

How would you calculate the relative humidity of a place? Explain with an example.

Answer 1

Hint: 1)This is an indicator of the probability of precipitation, dew, or fog.
2)For health and comfort, the ideal level of relative humidity is between 30-50 per cent.
3)This amount of relative humidity in the air depends on the amount of water in the air as well as the temperature of the air.

Complete answer:
The relative humidity of the air-water mixture is defined as the ratio of the partial pressure of the water vapour in the mixture to the equilibrium vapour pressure of the water over the flat surface of the pure water at a given temperature.

Relative humidity is an important metric used in weather forecasting and reporting. During summer weather when it is really hot, the increase in relative humidity thereby increases the evident temperature of humans as well as other animals by halting the evaporation of perspiration from the skin.

Relative humidity is usually expressed in terms of a percentage. If it is a higher percentage, it means that the air-water mixture is more humid. At 100 percent relative humidity, the air is saturated at its point of dew.

If the air at a temperature of 15 degrees contains 5 grammes of water vapour per kilogramme, the relative humidity shall be expressed as 5/10 or 50 per cent. If the air is saturated, the relative humidity is 100 percent. The relative humidity can be expressed in the following equation:
It's R.H. = vapour pressure/vapor pressure saturation × 100

Note: Relative humidity of 75 per cent means that the air holds 80 percent of the water it can hold at that temperature and pressure. As the air cools, it can no longer hold as much water as the relative humidity increases.
Relative humidity also measures water vapour, but RELATIVE to air temperature.
Relative humidity is mentioned in the weather forecast as it affects how we feel the temperature.