The study of air-vapor mixtures.


Related Terms

POLE-ZERO CONFIGURATION

A plot of the poles and zeros of a transfer function in the complex plane; used to study the stability of a system, its natural motion, its frequency response, and its transient response.

POINCARE SURFACE OF SECTION

A method of displaying the character of a particular trajectory without examining its complete time development, in which the trajectory is sampled periodically, and the rate of change of a quantity under study is plotted against the value of that quantity at the beginning of each period. Also known as surface of section.

NUSSELT NUMBER

A dimensionless number used in the study of forced convection which gives a measure of the ratio of the total heat transfer to conductive heat transfer, and is equal to the heat-transfer coefficient times a characteristic length divided by the thermal conductivity. Symbolized NNu.

NONRELATIVISTIC MECHANICS

The study of the dynamics of systems in which all speeds are small compared to the speed of light.

NERNST-LINDEMANN CALORIMETER

A calorimeter for measuring specific heats at low temperatures, in which the heat reservoir consists of a metal of high thermal conductivity such as copper, to promote rapid temperature equalization; none of the material under study is more than a few millimeters from a metal surface, and the whole apparatus is placed in an evacuated vessel and heated by current through a platinum heating coil.

MOTION ANALYSIS

Detailed study of the motions used in a work task or at a given work area.

LOW-TEMPERATURE HYGROMETRY

The study that deals with the measurement of water vapor at low temperatures; the techniques used differ from those of conventional hygrometry because of the extremely small amounts of moisture present at low temperatures and the difficulties imposed by the increase of the time constants of the standard instruments when operated at these temperatures.

LOCATION ANALYSIS

An initial step in the design of a robotic system consisting of a detailed study of all aspects of the placement of components such as work stations, buffers, and materials-handling equipment, as well as accessories, tools, and workpieces within a work station.

LINEAR SYSTEM ANALYSIS

The study of a system by means of a model consisting of a linear mapping between the system inputs (causes or excitations), applied at the input terminals, and the system outputs (effects or responses), measured or observed at the output terminals.

JOB ANALYSIS

A detailed study of the 306 work performed, the facilities required, the working conditions, and the skills required to complete a specific job. Also known as job study.

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