Question

what is the different between humidity and reletuve humidoty? how is relative humidity measured​

Answer 1

Humidity is the amount of moisture or water present in the air in the form of water vapors. It is measured in grams of water in a letter of air (mass/volume)

Relative humidity is the percentage of the moisture against the highest possible level of moisture in the air at a specific temperature.

Levels of humidity are measured using an instrument called a hygromete.

A simple hygrometer is known as a psychrometer which consists of a dry bulb and a wet bulb thermometer.

Relative humidity can also be measured by placing the intersection of the wet and dry bulb on a psychrometric chart. .