Relative humidity is defined as the amount of atmospheric moisture present, divided by the amount of moisture that would be present if the air were completely saturated. This ratio is typically expressed as a percentage.... More » Science Earth Science Atmosphere

To calculate dew point, you need to know the current temperature and relative humidity, and then solve the equation Td = T - ((100 - RH) / 5) for Td, which stands for the dew point temperature in degrees Celsius. This eq... More »

Relative humidity inside the home increases as the actual temperature comes closer to the dew point temperature. The dew point temperature is the temperature at which the air cannot hold all the moisture in it and some o... More »

Atmospheric inversions are parallel layers of air that rise in temperature as they get higher. This warm air is light and lies over cool and heavy air, which makes this air have strong upright stability, particularly whe... More » Science Earth Science Atmosphere

Frequently opening the refrigerator door creates humidity because it lets warm, humid air enter the unit, making it more difficult for the refrigerator to remove the excess moisture. The moisture can also build up inside... More » Home & Garden Appliances Refrigerators & Freezers

Hygrometers measure the amount of moisture or humidity in the air, but there are a number of different types of hygrometers, and they display their results in different ways. Most hygrometers display their readings in th... More »

A swamp cooler, also known as an evaporative cooler, is an appliance that cools an area of low humidity by increasing the moisture content of the air. The heat in the area evaporates the moisture, making the area cooler. More » Home & Garden Heating & Cooling