This article is about the property of two-dimensional objects. For other uses, see Density (disambiguation).
Area density
Common symbols
SI unit
kg/m2
In SI base units
m−2⋅kg
Derivations from other quantities
Dimension
The area density (also known as areal density, surface density, superficial density, areic density, mass thickness, column density, or density thickness) of a two-dimensional object is calculated as the mass per unit area. The SI derived unit is the kilogram per square metre (kg·m−2).
A related area number density can be defined by replacing mass in by number of particles or other countable quantity.
In the paper and fabric industries, it is called grammage and is expressed in grams per square meter (g/m2); for paper in particular, it may be expressed as pounds per ream of standard sizes ("basis ream").
The areadensity (also known as areal density, surface density, superficial density, areic density, mass thickness, column density, or density thickness)...
in parentheses. List of countries by arable land density List of countries and dependencies by area List of countries and dependencies by population List...
calculating densityDensities of the elements (data page) List of elements by density Air densityAreadensity Bulk density Buoyancy Charge densityDensity prediction...
Population density (in agriculture: standing stock or plant density) is a measurement of population per unit land area. It is mostly applied to humans...
This is a list of cities worldwide by population density. The population, population density and land area for the cities listed are based on the entire...
number density, two-dimensional areal number density, or one-dimensional linear number density. Population density is an example of areal number density. The...
electromagnetism, current density is the amount of charge per unit time that flows through a unit area of a chosen cross section. The current density vector is defined...
District of Columbia by population density, population size, and land area. It also includes a sortable table of density by states, territories, divisions...
In probability theory, a probability density function (PDF), density function, or density of an absolutely continuous random variable, is a function whose...
The 100 largest municipalities by area. Demographics of Spain List of municipalities of Spain List of metropolitan areas in Spain Ranked lists of Spanish...
moment of inertia equals the areadensity times the area moment of inertia. Please note that for the second moment of area equations in the below table:...
metropolitan areas by population density covering the top 50 most densely populated cities. List of cities proper by population density [1] Maldives Bureau...
States, a metropolitan statistical area (MSA) is a geographical region with a relatively high population density at its core and close economic ties...
thickness, density and specific volume" indicates that the paper density is expressed in grams per cubic centimeter (g/cm3). Grammage DensityAreadensity Linear...
places are defined as being in an unincorporated area. Census-designated places that have a population density of over 10,000 people per square mile are listed...
physiological density or real population density is the number of people per unit area of arable land. A higher physiological density suggests that the...
Relative density, also called specific gravity, is a dimensionless quantity defined as the ratio of the density (mass of a unit volume) of a substance...
is finite, one may compute the energy spectral density. More commonly used is the power spectral density (or simply power spectrum), which applies to signals...
pixels per centimetre (ppcm or pixels/cm) are measurements of the pixel density of an electronic image device, such as a computer monitor or television...
United States List of United States cities by population density List of United States urban areas 1 - Sitka, Alaska 2 - Juneau, Alaska 3 - Wrangell, Alaska...
systems and technological development. Surface power density, energy per unit of area Energy density, energy per unit volume Specific energy, energy per...
electromagnetism, charge density is the amount of electric charge per unit length, surface area, or volume. Volume charge density (symbolized by the Greek...
interacting with some environment (e.g. decoherence). Density matrices are thus crucial tools in areas of quantum mechanics that deal with mixed states, such...
economies of density are cost savings resulting from spatial proximity of suppliers or providers. Typically higher population densities allow synergies...
electromagnetism, polarization density (or electric polarization, or simply polarization) is the vector field that expresses the volumetric density of permanent or induced...
Urban density is a term used in urban planning and urban design to refer to the number of people inhabiting a given urbanized area. As such it is to be...
The Greater Manila Area (Filipino: Malawakang Maynila) is the contiguous urbanization region surrounding the Metropolitan Manila area. This built-up zone...
areas". Urban areas consist of a densely-settled urban core, plus surrounding developed areas that meet certain density criteria. Since urban areas are...
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