vapor density
vapour density

It has a vapor density 3.4 times greater than that of air allowing it to remain low in the air for long periods of times.

The Soave-Redlich-Kwong equation of state describes the vapor densities of pure components and mixtures quite well but the deviations of the liquid density prediction are high.

As Relative Humidity is a dimensionless quantity (often expressed in terms of a percentage), vapor density can be stated in units of grams or kilograms per cubic meter.

He published his Nakaya Diagram, which describes the relationships among vapor, temperature, supersaturation, and excess vapor density in clouds.

Life evolved to seal off passages, allowing a buildup of local vapor density.

The Victor Meyer apparatus accurately measures the volume of a volatilized substance from which the vapor density of the gas can be derived and also the relative mass.

Goldschmiedt also improved the method of Victor Meyer to determine, through vapor density, the molecular mass of compounds with low boiling point.

It should be evident that the higher the number of molecules that have this energy the more this process is occurring - so evaporation has something to do with the vapor density.

In addition to this list of some of the new substances he prepared, reference may be made to his work on abnormal vapor densities.