Assertion: number density | /r/HasProperty | intensive quantity
Facets:
value: in physical space
type: LOCATION
Source sentences:
text: The number density (symbol: n or ρ N ) is an intensive quantity used to describe the degree of concentration of countable objects (particles, molecules, phonons, cells, galaxies, etc.) in physical space: three-dimensional volumetric number density, two-dimensional areal number density, or one-dimensional linear number density.