Density (disambiguation)

Density is defined as the ratio of mass per unit volume.

Density may also refer to:

Physics

Density of mass

• Area density or surface density, mass over an area
• Bulk density, mass of a particulate solid or powder divided by the volume it occupies
• Linear density, mass over a line
• Neutral density, mass density of seawater
• Particle mass density or true density, density of the particles that make up a particulate solid or a powder
• Relative density, a measure of density in comparison to the density of something else
• Vapour density, a relative density used for gases

Other

• Number density, number of particles per unit volume, area, or length
• Optical density, the absorbance of a material

Mathematics

Number theory

• Natural density, also called asymptotic density
• Dirichlet density
• Schnirelmann density

Geometry

• Density (polytope)
• Density on a manifold
• Packing density
• Tensor density in differential geometry

Other fields

• Density (graph theory), the fraction of possible edges that exist in a graph

Other scientific fields

• Density (computer storage), a measure of the quantity of information bits that can be stored on a computer storage medium
• Nutrient density, the proportion of any array of a single nutrient or nutritional factor, or of numerous nutrients in foods
• Plant density
• Population density, population per unit land area
• Spectral density, the distribution of power into frequency components in signal processing
• Urban density, in urban planning and design

See also

• Density 21.5 – a piece of music for solo flute written by Edgard Varèse
• Earth Passage – Density, a 1981 album by American jazz saxophonist Joseph Jarman and percussionist Don Moye
• Dense (film), a 2004 film
• Dense set
• Concentration
• Flux
• Intensity (physics)