Relative Humidity

Relative humidity is the ratio of the partial pressure of water vapor in an air-water mixture to the saturated vapor pressure of water at a prescribed temperature. The relative humidity of air depends not only on temperature but also on the pressure of the system of interest.

Read more about Relative HumidityDefinition, Measurement, Misconception, Pressure Dependence, Related Concepts, Other Important Facts

Other articles related to "relative humidity, humidity, relative":

Capillary Condensation - Real-world Applications and Problems - Atomic Force Microscopy
... Scientific studies have been done on the relation between relative humidity and the height of the meniscus created by capillary condensation ... One particular study, done by Weeks, illustrated that with the increase in relative humidity, there is a large increase in the size of the meniscus ... This study also states that no meniscus formation is observed when the relative humidity is less than 70%, although there is uncertainty in this conclusion due ...
Air Well (condenser) - Background
... The quantity of water vapour contained within the air is commonly reported as a relative humidity, and this depends on temperature—warmer air can contain more ... For instance, the dew temperature of air at 20 °C (68 °F) and 80 percent relative humidity is 18 °C (64 °F) ... The dew temperature falls to 10 °C (50 °F) if the relative humidity is only 25 percent ...
Relative Humidity - Other Important Facts
... The statement that relative humidity (RH%) can never be above 100%, while a fairly good guide, is not absolutely accurate, without a more sophisticated definition of humidity than the one given here ... For a given dewpoint and its corresponding absolute humidity, the relative humidity will change inversely, albeit nonlinearly, with the temperature ... the low levels (in the absence of measures to add moisture) of humidity in heated structures during winter, resulting in dry skin, itchy eyes, and persistence of static electric charges ...
Dew Point
... The dew point is associated with relative humidity ... A high relative humidity indicates that the dew point is closer to the current air temperature ... Relative humidity of 100% indicates the dew point is equal to the current temperature and that the air is maximally saturated with water ...
Cellulose Acetate Film - Preservation and Storage
... Institute, fresh acetate film stored at a temperature of 65°F (18°C) and 50% relative humidity will last approximately 50 years before the onset of. 15°, while maintaining the same level of humidity, delays the process by 150 years ... A combination of low temperature and low relative humidity represents the optimum storage condition for cellulose acetate base films, however, in practice temperatures of 55°F (12°C) and a relative ...

Famous quotes containing the word relative:

    Three elements go to make up an idea. The first is its intrinsic quality as a feeling. The second is the energy with which it affects other ideas, an energy which is infinite in the here-and-nowness of immediate sensation, finite and relative in the recency of the past. The third element is the tendency of an idea to bring along other ideas with it.
    Charles Sanders Peirce (1839–1914)