What is water vapor pressure (VP)?

Water vapor pressure (VP) refers specifically to the pressure exerted by water vapor molecules in the air. This measurement is crucial in understanding how much moisture air can hold and is a key factor in processes such as drying and humidity control. When water is present in a gaseous form, the molecules exert a pressure that can vary depending on the amount of water vapor present and the temperature. Since VP is directly related to the concentration of water vapor in the air, its understanding is essential for tasks in drying and restoration processes, enabling professionals to properly assess and manage moisture levels for effective drying strategies.