A value, quantity, or magnitude in terms of which other values, quantities, or magnitudes are expressed. In general, a unit is fixed by definition and is independent of such physical conditions as temperature.
Related Terms |
ISO SOLID CONTAMINANT CODE (ISO 4406)
A code assigned on the basis of the number of particles per unit volume greater than 5 and 15 micrometers in size. Range numbers identify each increment in the particle population throughout the spectrum of levels.
|
REMOTE REFRIGERATING SYSTEM
Refrigerating system in which condensing unit is away from space to be cooled.
|
AMMETER
An instrument for measuring the magnitude of electric current flow.
|
GROUND LOG
A device for determining the course and speed over the ground in shallow water consisting of a lead or weight attached to a line. The lead is thrown overboard and allowed to rest on the bottom. The course over ground is indicated by the direction the line tends and the speed by the amount of line paid out in a unit of time.
|
API GRAVITY
A gravity scale established by the American Petroleum Institute and in general use in the petroleum industry, the unit being called 'the A.P.I. degree' .
|
FLOW RATE
The volume, mass, or weight of a fluid passing through any conductor per unit of time.
|
BARREL
A unit of liquid volume of petroleum oils equal to 42 U.S. gallons or approximately 35 Imperial gallons.
|
LIQUID
Any substance that flows readily or changes in response to the smallest influence. More generally, any substance in which the force required to produce a deformation depends on the rate of deformation rather than on the magnitude of the deformation.
|
ANGSTROM UNITS
A unit of wave length, equal in length to one ten billionth.
|
INTERFACIAL TENSION (IFT)
The energy per unit area present at the boundary of two immiscible liquids. It is usually expressed in dynes/cm (ASTM Designation D 971.)
|
