For Density we have terms and definitions in 40 topics. The topics are Car Care, Carpet, Chemistry, Cinematography, Construction, Dairy Production, Earth Science, Energy, Environment, Explosives, Film Production, Gasoline, Geologic, Horse Health, Hunting, Logistics, Magnetic Tapes, Maps, Marketing, Metal, Natural Gas, Nuclear, Nuclear Science, Oceanography, Oil, Paper, Photography, Pituitary, Planetary Science, Plastics, Rocketry, Rugs, Sanitation, Scanner, Science, Sociology, Solar Physics, Weather, Wire and Wood.

Density (Car Care)

The mass of a unit volume of a substance. Its numerical value varies with the units used.

Density (Carpet)

The weight of pile yarn in a unit volume of carpet. U.S. government FHA density (D), expressed in ounces per cubic yard, is given by the formula:

D = W x 36 divided by T; in which D is Density, W is pile yarn weight in ounces per square yard, and T is pile thickness or height in inches.

see also carpet construction

Density (Chemistry)

Mass per unit volume of a substance.

Density (Cinematography)

A factor which indicates the light-stopping power of a photographic image.

Density (Construction)

The number of people living in a calculated area of land such as s square mile or square kilometer.

Density (Dairy Production)

A measure of the concentration of matter per unit of volume (e.g., gl or kg m3).

Density (Earth Science)

A measure of how tightly packed the atoms of a substance are. Measured in grams per cubic centimeter. Varies by the mineral or substance. For example, gold has a high density, while quartz has a low density. See also "specific gravity."

Density (Energy)

The mass of a unit volume of a substance.

Density (Environment)

A measure of how heavy a specific volume of a solid, liquid, or gas is in comparison to water. depending on the chemical.

Density (Explosives)

The density of a substance is its mass per unit volume. Because many substances, especially gases, can be compressed into a smaller volume by increasing the pressure on them, the temperature and pressure at which the density is measured are usually specified. Specific Gravity. The SI unit of density is the kilogram per cubic meter (kg/m3); the density of aluminum for instance is 2700 kg/m3. Another common unit of density is the gram per cubic centimeter (g/cm3). Since 1kg = 1000g and 1m3 = (100 cm)3 = 106 cm3, 1 g/cm3 = 103 kg/m3. Hence the density of aluminum can also be given as 2.7 g/cm3.
Water at 3.98° C = 1.000000 grams/ml
Water at 3.98° C = 0.999973 grams/cm3

Density (Film Production)

A factor which indicates the light-stopping power of a photographic image.

Density (Gasoline)

The gravity of crude oil. Density is measured in kilograms of large, carbon-rich molecules per cubic metre or degrees on the American Petroleum Institute (API) gravity scale.

Density (Geologic)

The weight per unit volume of a material.

Density (Horse Health)

The concentration of a nutrient in a feed.

Density (Hunting)

(1) a measure of animal abundance in which the number of animals is given per unit area (i.e., 100 elk/km2). (2) independent factors- not related to the density of animals, cause changes in population parameters (primarily survival rates).A line's buoyancy, which is determined by the relationship of its mass to that of water. If the density of line is greater than water the line will sink; if it's less, it will float.

Density (Logistics)

The weight of cargo per cubic foot or other unit.

Density (Magnetic Tapes)

The amount of data stored in a given length of tape; usually expressed in bits per inch (BPI).

Density (Maps)

The number of items within a specific area or volume

Density (Marketing)

A measure that is computed by dividing the total population of a geographic unit by its land area measured in square miles or square kilometers.

Density (Metal)

The mass-per-unit volume of a substance, usually expressed in the metals industry in pounds per cubic inch.

Density (Natural Gas)

The weight of a unit of volume, usually expressed as pounds per cubic foot.

Density (Nuclear)

The ratio of an object’s mass to its volume.

Density (Nuclear Science)

That property of a substance which is expressed by the ratio of its mass to its volume.

Density (Oceanography)

The amount of mass (kg) in a unit volume (cubic metre) of a substance. It depends on the substance itself and also its temperature - on the ocean the salinity, temperature and pressure all effect the density of seawater.

Density (Oil)

The heaviness of crude oil, indicating the proportion of large, carbon-rich molecules, generally measured in kilograms per cubic metre (kg/m3) or degrees on the American Petroleum Institute (API) gravity scale; in Western Canada oil up to 900 kg/m3 is considered light to medium crude – oil above this density is deemed as heavy oil or bitumen.

Density (Paper)

Identifies the weight of paper compared to the volume; it is directly related to the paper's absorbency, stiffness, and opacity.

Density (Photography)

The relative amount of silver in various areas of film or paper after exposure or development therefore the darkness of a photographic print or the light-stopping ability of a negative or transparency.

Density (Pituitary)

The amount of darkness or light in an area of a scan reflects the compactness and density of tissue. Differences in tissue density are the basis for CT and MR scans.

Density (Planetary Science)

Mass per unit volume; a measure of how much material is in a given space.

Density (Plastics)

The equivalent property to specific gravity; measured by displacement.
Deflection Temperature (1)

Density (Rocketry)

Specific weight per volume unit.

Density (Rugs)

The measure by which the quality of the rug's construction is judged. Determined by two factors: number of knots and the height of the pile in a given area.

Density (Sanitation)

A measure of how heavy a substance (solid, liquid or gas) is for its size. Density is expressed in terms of weight per unit volume, that is, grams per cubic centimeter or pounds per cubic foot.

Density (Scanner)

The ability of a material to absorb light. Measure of the light transmission of a transparent or translucent object or the light-absorbency of a reflective surface. In photography, measurement of the opacity of a transparent or translucent object. On a film negative, the greater the density area, the more black or more developed it is. Density is measured from 0 to 4.0. It is calculated by measuring the reflectance or transmittance of light and calculating theoretical light absorption.

Density (Science)

Mass per unit of volume of a substance

Density (Sociology)

A measure of human crowding usually expressed as the number of people per square mile.

Density (Solar Physics)

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).

Density (Weather)

The ratio of the mass of a substance to the volume it occupies. In oceanography, it is equivalent to specific gravity and represents the ratio of the weight of a given volume of sea water to that of an equal volume of distilled water at 4.0°C or 39.2°F.

Density (Wire)

The weight per unit volume of a substance.

Density (Wood)

The mass of wood substance enclosed within the boundary surfaces of a wood-plus-voids complex having unit volume. It is variously expressed as pounds per cubic foot, kilograms per cubic metre, or grams per cubic centimetre, at a specified moisture content.

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