vapor density


  • WordNet 3.6
    • n vapor density the density of a gas relative to the density of hydrogen
    • ***
Webster's Revised Unabridged Dictionary
    • Vapor density (Chem) the relative weight of gases and vapors as compared with some specific standard, usually hydrogen, but sometimes air. The vapor density of gases and vaporizable substances as compared with hydrogen, when multiplied by two, or when compared with air and multiplied by 28.8, gives the molecular weight.
    • ***


In literature:

The density of solid iodine is 4.95; that of its vapor 8.716.
"American Handbook of the Daguerrotype" by Samuel D. Humphrey
Generally, a liquid has considerably greater density than its vapor.
"Scientific American Supplement, Vol. XIX, No. 470, Jan. 3, 1885" by Various
The vapor densities of many of the elements show that, like oxygen and nitrogen, their molecules consist of two atoms.
"An Elementary Study of Chemistry" by William McPherson

In science:

Using this technique we calculated liquid-gas coexisting densities for the case of long-range attractions (α = 0.1), where the liquid-vapor transition is stable and the phase diagram shows a critical point as well as a triple point.
Phase Behavior of a Simple Model for Membrane Proteins
These graphs, which are for N = 900 particles and density ρ∗ = 0.30, illustrate, from left to right, (i) coexistence of a solid and its vapor (the configuration shown is for temperature T ∗ = 0.20), (ii) liquid–vapor coexistence (T ∗ = 0.35), and (iii) a disordered, fluid phase (T ∗ = 0.50).
Lennard--Jones and Lattice Models of Driven Fluids
At intermediate densities and low enough T ∗ , vapor and a condensed phase segregate from each other.
Lennard--Jones and Lattice Models of Driven Fluids
Application to Raman gain Our experiment uses a cloud of cold 85Rb atoms con fined in a vapor-loaded magneto-optical trap (MOT) produced by six large independent trapping beams, allowing the trapping of a few 109 atoms at a density of 1010 atoms/cm3 , corresponding to an on-resonance optical thickness of about 10.
Threshold of a random laser based on Raman gain in cold atoms
The density-structure pathway in our model is driven by the liquid-vapor critical point.
Nonclassical assembly pathways of anisotropic particles
When the order parameter has only one component, one obtains the Ising universality class that describes for instance the liquid-vapor transition in simple fluids and the transitions of multicomponent fluid systems; in this case the density plays the role of the order parameter.
The N-component Ginzburg-Landau Hamiltonian with cubic anisotropy: a six-loop study
The vapor density is exponential in temperature. In the temperature range from 1.2 to 0.7 K it decreases by 3 orders of magnitude, and below 0.1 K becomes essentially equal to zero. 2.2.
Quantum Computing Using Electrons Floating on Liquid Helium
Vapor density measures the amount of water vapor in a volume of air in units of mass per unit volume.
A Review of Accelerated Test Models
Partial vapor pressure is approximately proportional to vapor density.
A Review of Accelerated Test Models
Similar parameters to ours were used to model the star (R⋆ = 650 R⊙ and T eff = 3600 K) but the MOLsphere description is a little different: it extends from the photosphere up to Rmol = 1.45 R⋆. A temperature Tmol = 2050 K and a water vapor column density of 3 ± 1 × 1020 cm−2 are found.
The molecular and dusty composition of Betelgeuse's inner circumstellar environment
Then the initial values of deltaBx, deltaBy and deltaBz are set to 2000nT, respectively. After that, Bx0, By0 and Bz0 are applied by the current supply in Fig. 1 (a). The light density of pump beam after the atomic vapor cell is detected and sampled as Ph0.
Atomic-signal-based zero field finding technique for unshielded laser-pumped atomic magnetometer
The phenomenon of dipole blockade is theoretically not exclusive to cold gases, however for thermal vapors where it is possible to achieve much higher densities the blockade radius is reduced by a factor of 1/ 6√νDoppler , where νDoppler is the frequency width due to Doppler broadening.
Non-linear optics using cold Rydberg atoms
This actually means the presence of a low density vapor phase, which is “empty” only by contrast to the higher density liquid phase.
Simple Model of Capillary Condensation in porous media