Experiment: Determination of Specific heat of liquids by Newton’s law of cooling Theory: The amount of heat, needed to increase the temperature of unit mass of a material by 1°C is called the specific heat…

Relation between dew point and relative humidity From the definition of dew point we have already learnt that the temperature at which a given mass of air becomes just saturated by water vapour present in…

Some real phenomena relating hygrometry which influence our life Effect of relative humidity on the feeling of comfort and uneasiness The main factor which controls the sensation of comfort or uneasiness is the relative humidity…

Importance of determination of relative humidity It is defined as the ratio of the mass of water vapour present in a given volume of air at a particular temperature to the mass of water vapour…

Dew point Atmospheric air contains water vapour or moisture. A fixed volume of air can contain a fixed amount of water vapour at a particular temperature. The capacity to contain water vapour increases with increasing…

Absolute humidity- At a particular place and at a particular time the mass of water vapour present per unit volume is called the absolute humidity. Normally water vapour present in one unit volume of air…

Relative humidity: It is defined as the ratio of the mass of water vapour present in a given volume of air at a particular temperature to the mass of water vapour required to saturate the…

“The relative humidity of air is 60%”—this statement means. Relative humidity is defined as the ratio of the mass of water vapor present in a given volume of air at a particular temperature to the…