The ratio of the weight of a given volume of a substance in a vacuum at a given temperature to the weight of an equal volume of water in a vacuum at a given temperature.



Related Terms

BULK MODULUS OF ELASTICITY

The ratio of the compressive or tensile force applied to a substance per unit surface area to the change in volume of the substance per unit volume. Also known as bulk modulus; compression modulus; hydrostatic modulus; modulus of compression; modulus of volume elasticity.

RELATIVE LIQUID DENSITY

The mass of a liquid at a given temperature compared with the mass of an equal volume of fresh water at the same temperature or at a different given temperature.

DENSITY

The mass per unit volume of a substance at specified conditions of temperature and pressure.

ANOMALOUS EXPANSION

An increase in the volume of a substance that results from a decrease in its temperature, such as is displayed by water at temperatures between 0 and 4 C (32 and 39 F).

BULK FACTOR

The ratio of the volume of loose powdered or granulated solids to the volume of an equal weight of the material after consolidation into a voidless solid.

COOLING METHOD

A method of determining the specific heat of a liquid in which the times taken by the liquid and an equal volume of water in an identical vessel to cool through the same range of temperature are compared.

SPECIFIC HUMIDITY

Ratio of weight of vapor to the weight of gas in a unit volume of an air-water vapor mixture.

HUMPHRIES EQUATION

An equation which gives the ratio of specific heats at constant pressure and constant volume in moist air as a function of water vapor pressure.

KELVIN SCALE

The basic scale used for temperature definition; the triple point of water (comprising ice, liquid, and vapor) is defined as 273.16 K; given two reservoirs, a reversible heat engine is built operating in a cycle between them, and the ratio of their temperatures is defined to be equal to the ratio of the heats transferred.

SPECIFIC GRAVITY

The ratio of the weight of a unit volume of a material to the weight of the same unit volume of water.

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