The amount of mass or number of particles per unit volume In cgs units mass density has units of gm cm-3 Number density has units cm-3 (particles per cubic centimeter)
(1) Regarding ink, the relative thickness of a layer of printed ink (2) Regarding color, the relative ability of a color to absorb light reflected from it or block light passing through it (3) Regarding paper, the relative tightness or looseness of fibers
That property of a substance which is expressed by the ratio of its mass to its volume
Refers to the quantity of mass per unit volume For gases, density involves the number of atoms and molecules per unit volume
(1) the opacity of a halftone or solid area on a transparent film (a darker tone has a higher density tha a lighter tone); (2) the density of a fiber with its weight expressed in grams per cubic centimeter; (3) the mass of any unit volume of a material; (4) a measure of reflectance or transmittance equal to log 10 1/reflectance of log 10 or 1/transmittance; (5) the ratio of a substance mass to its volume at a given temperature and pressure; also refer to color density
In a facsimile system, a measure of the light transmission or reflection properties of an area of an object (188) Note 1: Density is usually expressed as the logarithm to the base 10 of the ratio of incident to transmitted or reflected irradiance Note 2: There are many types of density, such as diffuse, double diffuse, and specular density, each of which will usually have different numerical values for different materials The relevant type of density depends on the type of optical system, the component materials of the object, and the surface characteristics of the object
The ratio of the number particles or total amount of such a quantity as energy or momentum, carried by or contained in a volume , to that volume
Density is the extent to which something is filled or covered with people or things. a law which restricts the density of housing The region has a very high population density
The density of a material is its mass for a given volume Density is usually given in units of grams per milliliter (g/ml) or grams per cubic centimeters (g/cc) Density is closely related to specific gravity (relative density) The volume of a material in a container can be calculated from its density and mass
An intensive property of a substance equal to the mass of a sample divided by the volume of the sample
mass (in kg) per unit of volume of a substance; kg/m3 For pure water the density is 1000 kg/m3 For seawater the density is usually more The density increases with increasing salinity, and decreases with increasing temperature More information can be found in "properties of seawater" For stone and sand, usually a density of 2600 kg/m3 is assumed Concrete is less dense, in teh order of 2400 kg/m3 Some types of basalt may reach up to 2800 kg/m3 For sand, including the voids, one may use 1600 kg/m3, while mud often has a density of 1100 - 1200 kg/m3
as compared with the mass and volume of a portion of some substance used as a standard
The amount of matter contained within a given volume Density is measured in grams per cubic centimeter (or kilograms per liter) The density of water is 1 0, iron is 7 9, and lead is 11 3