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==Measurement of the mass density of a gas – aspirator method == ...V</math> of the extracted amount of gas, consequently accessing its [[mass density]] (<math>\rho=\frac{m}{V}</math>) under atmospheric pressure.<ref>Physikali ...

...ef>{{cite arXiv |first=C. |last=Keeton |date=June 2002 |title=A Catalog of Mass Models for Gravitational Lensing |eprint=astro-ph/0102341v2 }}</ref> ==Density distribution== ...

{{Short description|Ratio of mass-flux of chemical species to total mass flux}} ...constant-pressure deflagration for first-order global reactions.</ref> The mass-flux fraction of a species ''i'' is defined as<ref>Williams, F. A. (2018). ...

{{Short description|Chemical term for density of a component in a mixture}} {{Distinguish|Mass fraction (chemistry)}} ...

...f> Inherent viscosity [[dimensional analysis|scales]] inversely to [[mass density]], and a common [[unit (science)|unit]] is dL/g. ...here <math display=inline>c</math> is the [[Mass concentration (chemistry)|mass concentration]] of the polymer and <math display=inline>\eta_{rel}</math> i ...

{{Other uses|Mass action (disambiguation){{!}}Mass action}} In electronics and [[semiconductor]] physics, the '''law of mass action''' relates the concentrations of [[valence and conduction bands|free ...

...3 </math>'' or ''<math> lb/ft^3 </math>''. The most basic principle of how density is calculated is by the formula: : <math> \rho </math> = the density of the sample. ...

...all real functions <math>\rho'(\mathbf{x})</math> that conserve the total mass of the star <math>\int_V \rho' d\mathbf{x} = 0</math>.'' *<math>\rho(\mathbf{x})</math> is the unperturbed [[density]] ...

{{Short description|Halo mass function}} ...ormen approximation''' is a [[dark matter halo|halo]] [[Halo mass function|mass function]]. ...

...bes the [[opacity (optics)|opacity]] of a medium in terms of the ambient [[density]] and [[temperature]], assuming that the opacity is dominated by [[ionizati ...m observations, and this form of the relation describes how changes in the density or temperature will affect the opacity. ...

{{short description|Relation between density and radius for a white dwarf}} ...e from the center and <math>C</math> is a constant which is related to the density of the white dwarf at the center. The boundary <math>\eta=\eta_\infty</math ...

...l) is a mathematical function that is used to describe the distribution of mass or light in [[elliptical galaxies]] and the [[bulge (astronomy)|bulges]] of The density in the Jaffe model is given by ...

...or potential. Here <math>{m_e}</math> is the [[Electron rest mass|electron mass]], <math>{e}</math> is the electron charge, <math>{c}</math> is the [[speed ...can be summarized as follows: if the parameters of the interaction (plasma density and laser amplitude) change simultaneously so that the <math>{S}</math> par ...

: <math> \rho </math> is the [[density]] (with dimensionality of mass per volume) of the fluid This equation assumes constant density, that the acceleration is uniform, and that the flow is fully developed "pl ...

...[[Fluid dynamics#Steady vs unsteady flow|steady]] and one-dimensional, and mass is added within the duct. Because the flow is adiabatic, unlike in [[Raylei ...and the flow can become choked given sufficient mass addition. Therefore, mass addition will cause both supersonic and subsonic Mach numbers to approach M ...

{{Short description|Mass of an astrophysical system}} ...laxy begins to expand, but the expansion is halted and reversed due to the mass collapsing under gravity until the sphere reaches equilibrium – it is said ...

...los, Mass Functions, and Cosmology: a Theorist’s View]</ref>) of a certain mass within a given volume of the Universe. It was described in an [[academic pa ...er that, starting with small mass scales and advancing over time to larger mass scales, do the perturbations actually collapse to form (for example) galaxi ...

...s number density of "dead quasars" was attributed by Lynden-Bell to high [[mass-to-light ratio]] objects found at the center of galaxies. This is essential ...[luminosity]] (<math>L</math>) of quasars was due to the accretion rate of mass onto black holes given by: ...

...kinetic energy per unit mass, and gravitational potential energy per unit mass. ...per unit mass plus pressure times volume per unit mass (reciprocal of mass density). ...

...s is the law of [[conservation of mass]] for fluids, which states that the mass of any fluid volume must not change: ...rol volume]] <var>V_c</var>. Further assuming that the [[density|density function]] is continuous (i.e. that our fluid is monophasic and thermodynam ...