Gage Factor: A measure of the ratio of the relative change of resistance to the relative change in length of a piezoresistive strain gage.

Gage Length: The distance between two points where the measurement of strain occurs.

Gage Pressure:The pressure above (or below) atmospheric. Represents positive difference between measured pressure and existing atmospheric pressure. Can be converted to absolute by adding actual atmospheric pressure value.

Gage Pressure Transducer: A transducer which measures pressure in relation to atmospheric pressure.

Gain: The amount of amplification used in an electrical circuit. Gain is usually measured in decibels, but it can also be expressed as the ratio of output power to input power.

Galvanometer: An instrument that measures small electrical currents by means of deflecting magnetic coils.

GATT: General Agreement on Tariffs and Trade.

Gateway: A special dedicated computer that attaches to two or more networks and routes packets from one network to the other.

General Communications Interface: An ISDN interchip standard interface for both basic rate and primary rate equipment.

Glithch: A spike caused by the skew of switches or logic. Glitches are a troublesome source of error in high-speed D/A convertors and they are most prevalent at the mid scale switching location.

Gopher: A menu based system for exploring Internet resources.

GPH: Volumetric flow rate in gallons per hour.

GPM: Volumetric flow rate in gallons per minute.

Ground: 1. The electrical neutral line having the same potential as the surrounding earth. 2. The negative side of DC power supply. 3. Reference point for an electrical system.

Grounded Junction: A form of construction of a thermocouple probe where the hot or measuring junction is in electrical contact with the sheath material so that the sheath and thermocouple will have the same electrical potential.

GUI: Graphical user interface.