vapor density

Also found in: Dictionary, Thesaurus, Acronyms, Wikipedia.
Related to vapor density: vapor pressure

va·por den·si·ty

the mass per unit volume of a vapor; because the vapor density changes with temperature and pressure, it is commonly expressed as a specific gravity, that is, the weight of the vapor divided by the weight of an equal volume of a reference gas (for example, oxygen or hydrogen) at the same temperature and pressure.
Mentioned in ?
References in periodicals archive ?
m] calculated by ground meteorological data to profile the water vapor density.
0] denote the pressure, temperature and water vapor density of ground, respectively, and [tau]([f.
The output vectors are the water vapor density at different heights of atmosphere.
The last 4 samples are during heavy cloudy conditions, and the water vapor density profile retrieved by dual-frequency method has a better agreement with the radiosonde data.
m]) are small so they should be written in terms of water vapor density.
implying that if there is no change from inlet to outlet in air temperature there will be no change in the water vapor density.
If there were no desiccant coating, the time constant in Equations 27 and 28 must be zero for moisture transfer, implying an instantaneous outlet response for a change in the water vapor density at the inlet.
Graphical results similar to Figures 6 and 7 could be presented for the outlet air moisture content or water vapor density, so we return again to the general mathematical formulation where y(t) can represent either temperature or water vapor density.