EVERYDAY SCIENCE

Detailed explanation-1: -The dew point is the temperature below which the water vapour in a volume of air at a constant pressure will condense into liquid water. It is the temperature at which the air is saturated with moisture. where: Tdp is the dew point temperature.

Detailed explanation-2: -The dew point is the temperature to which air must be cooled to become saturated without changing the pressure. Changing the pressure affects the vapor pressure and therefore the temperature at which saturation occurs.

Detailed explanation-3: -If what’s there (the mixing ratio) is the same as what could be there (the capacity), then the air must be saturated, the relative humidity must be 100 percent and we must be at dew point (60 degrees F).

Detailed explanation-4: -A state of saturation exists when the air is holding the maximum amount of water vapor possible at the existing temperature and pressure. When the dew point temperature and air temperature are equal, the air is said to be saturated. Dew point temperature is NEVER GREATER than the air temperature.

Detailed explanation-5: -Dew point is the temperature at which water vapor in any static or moving air column will condense into water. In other words, the air is saturated and can no longer hold the moisture at this temperature. When the air temperature drops below its dew point, excess moisture will be released in the form of condensation.