relative humidity


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Related to relative humidity: absolute humidity, dew point

relative humidity

[′rel·əd·iv hyü′mid·əd·ē]
(meteorology)
The (dimensionless) ratio of the actual vapor pressure of the air to the saturation vapor pressure. Abbreviated RH.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

Relative humidity

The ratio of the amount of water vapor in air to the maximum amount of water that the same volume of air can hold at the same temperature, expressed as a percentage.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

relative humidity

The ratio of the weight of water vapor actually in humid air to the maximum possible weight of the water vapor that the air could contain at the same temperature; usually expressed as a percentage.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

relative humidity

The ratio of the amount of water vapor in the air to the amount the air can hold at that temperature. This ratio is always expressed as a percentage.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
In second experiment, the average temperature fluctuated between 20 to 33.50AdegC and relative humidity varied between 50.70 and 64.50% at Central Cotton Research Institute Sakrand, during June to November, 2013 (Fig.
The mean temperature and relative humidity affected malaria incidence rates in the following locations: northeastern Thailand: in Kalasin in 2012 and Ubon Ratchathani in 2014; eastern Thailand: in Chon Buri in 2012 and Sa Kaeo in 2014; western Thailand: in Phetchaburi in 2012 and Ratchaburi in 2015 and 2017; and southern Thailand: in Narathiwat in 2012, 2013, and 2015; Nakhon Si Thammarat in 2012; Surat Thani and Ranong in 2016; Pattani in 2015; and Songkhla in 2017.
In the sealing condition, the relative humidity decreased and the hydration degree increased continuously with the progress of hydration.
Disease after initiation, in general, progressed steadily except in weeks of low relative humidity. Low temperature coupled with high relative humidity resulted in a rapid progress of disease severity at the end of the season.
The respiratory rate was affected by relative humidity only at 0 and 4 days of shelf-life, with the point of lowest respiration in relative humidity levels of 87.8 and 92.7%, respectively (Figure 1D).
Type greenhouse by means of computational fluid dynamics (CFD), using the commercial program ANSYS/FLOTRAN v6.1 based on the finite elements method.The aim of this study is to compare the measured air temperature and relative humidity values with the simulated values using Computational Fluid Dynamics (CFD) in a naturally ventilated, gable-roofed single glass greenhouses located North-South direction, having different window spans such as 45deg and 90deg.
In Linear Technology Journal -V21N4 -07, Linear Technology gives a schematic with a set of equations that converts the two temperatures (sensed by diode connected transistors) and the atmospheric pressure into a relative humidity reading.
The result would be a spiral effect of room cooling and relative humidity rising to the point where cooling coils would ice over and high humidities would actually lead to mold outbreaks.
relative humidity, specific volume, dry-bulb temperature, and wet-bulb temperature.
Brownell has introduced an electronic relative humidity indicator as an alternative to paper and chemical colour based indicators.
Pearse and Hickey [26] and Yanar and Kwetkus [27] measured the charge density of plastics with a nickel and copper cyclone, using Faraday cage in consideration of air velocity and relative humidity. Fujita et al.

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