Is a gas that follows the perfect gas laws without deviation. There is no such thing, however it is the basis from which calculations are made and corrections applied.

A stationary vessel carrying a light used for navigation, serving the same purpose as a lighthouse.

Passenger User Fee

The change in the measured transducer output caused by changes in ambient temperature. Usually expressed a percentage of full scale.

A law of chemistry and physics: the rate of diffusion of one substance in another is proportional to the negative gradient of the concentration of the first substance.

A device used to control temperatures; used to control the operation of heating and cooling devices by turning the device on or off when a specified temperature is reached.

See: 'all or.

A gauge that measures air flow as a percentage of capacity, used in rotary screw compressors as an estimator during modulation controls.

Electroplating tin on an object.

An instrument for the measurement of the rate of ice accretion on an unheated body.

The practice of using a single meter to measure consumption and generation of electricity by a small generation facility (such as a house with a wind or solar photovoltaic system). The net energy produced or consumed is purchased from or sold to the gener ...

A thin, not necessarily visible, layer of material.

Project IDentification.

Sir Napier Shaw's name for the approximate absolute temperature scale,

One of the group of l5 chemically similar metals with atomic numbers 57 through 7l, commonly referred to as the lanthanides.

Small staysail located between the foremast and mainmast.

A type of weld cracking that usually occurs below 203

The part of the rotating element of a dynamic compressor that imparts energy to the flowing medium by means of centrifugal force. It consists of a number of blades mounted so as to rotate with the shaft.

Free Water

The distance between similar points on successive waves.