Everything about Density
Mass per unit volume
Density is the ratio of a substance's mass to its volume. The symbol most often used for density is ρ, although the Latin letter D can also be used: where ρ is the density, m is the mass, and V is the volume. In some cases, density is loosely defined as its weight per unit volume, although this is scientifically inaccurate – this quantity is more specifically called specific weight. Wikipedia →
🧭 Start here: a 6-step reading path
- Read the overview: DensityA 5-minute orientation
- Skim a recent paper: Formulating energy density for designing practical lithium–sulfur batteriesInfluential work since 2022
- Pick up a classic book: EcologyThe most-reprinted book on the subject
- Read the landmark paper: Density-functional thermochemistry. III. The role of exact exchangeCited 100,599 times
- Go sideways: Relative densityA closely related topic
- Go sideways: Specific volumeA closely related topic
📖 Definitions
Noun The amount of a certain phenomenon (such as matter, objectss, energy, or otherwise) in a given area (surface area) or volume (amount of space).
Noun A measure of the mass of matter contained by a unit volume.
Noun The ratio of one quantity, representing something of interest, to another quantity representing space, area, or extent in which the thing of interest is distributed.
Noun The probability that an outcome will fall into a given range, per unit of that range; the relative likelihood of possible values of a continuous random variable.
🏆 Landmark papers (most cited)
Density-functional thermochemistry. III. The role of exact exchange
Development of the Colle-Salvetti correlation-energy formula into a functional of the electron density
A consistent and accurate ab initio parametrization of density functional dispersion correction (DFT-D) for the 94 elements H-Pu
Density-functional exchange-energy approximation with correct asymptotic behavior
Semiempirical GGA‐type density functional constructed with a long‐range dispersion correction
The M06 suite of density functionals for main group thermochemistry, thermochemical kinetics, noncovalent interactions, excited states, and transition elements: two new functionals and systematic testing of four M06-class functionals and 12 other functionals
Effect of the damping function in dispersion corrected density functional theory
Estimation of the Concentration of Low-Density Lipoprotein Cholesterol in Plasma, Without Use of the Preparative Ultracentrifuge
🆕 Influential since 2022
Formulating energy density for designing practical lithium–sulfur batteries
Ampere-level current density ammonia electrochemical synthesis using CuCo nanosheets simulating nitrite reductase bifunctional nature
Recent Advances in Design of Electrocatalysts for High‐Current‐Density Water Splitting
Design Strategies for High‐Energy‐Density Aqueous Zinc Batteries
Regulating electronic states of nitride/hydroxide to accelerate kinetics for oxygen evolution at large current density
📚 Books worth reading
EcologyCharles J. Krebs · 1972
Advances in Quantum ChemistryPer-Olov Lowdin · 1977
An introduction to radioimmunoassay and related techniquesT. Chard · 1978- 📕Designing High-Density CitiesEdward Ng · 2009
Urban Dynamics & Urban ExternalitiesY. Kanemoto · 2002- 📕Suburban SprawlWim Wiewel · 2002
Tracts on mathematical and philosophical subjectsCharles Hutton · 1812
The exploding citiesPeter Wilsher · 1975
Ranked by number of editions on Open Library, a rough measure of how lasting a book is.
🔗 Related topics
- Relative density Relative density, also called specific gravity, is a dimensionless quantity defined as the ratio of the density (mass divided by volume) of a substance…
- Specific volume In thermodynamics, the specific volume of a substance (symbol: ν, nu) is the quotient of the substance's volume (V) to its mass (m): ν=Vm It is a mass-specific…
- Pressure Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure…
- Molar volume In chemistry and related fields, the molar volume, symbol Vm, or V~ of a substance is the quotient of the volume (V) occupied by a substance to the amount…
- Porosity Porosity or void fraction is a measure of the void (i.e. "empty") spaces in a material, and is a fraction of the volume of voids over the total volume…
- Fluidized bed A fluidized bed is a physical phenomenon that occurs when a solid particulate substance (usually present in a holding vessel) is under the right conditions…
- Buoyancy Buoyancy (/ˈbɔɪənsi, ˈbuːjənsi/), or upthrust, is the force exerted by a fluid opposing the weight of a partially or fully immersed object (which may also…
- Area density The area density (also known as areal density, surface density, superficial density, column density, or density thickness) of a two-dimensional object…