B: Babbitt Blob

babbitt

Any of the white alloys composed principally of lead or tin that are used extensively to make linings for sliding bearings.

babble

The composite signal caused by cross talk among a large number of interfering channels.

backbone

1. The trunk media of a multimedia local area network (LAN) that is separated into sections by bridges, routers, or gateways. 2. A high-speed high-performance network that links other networks together.

backbone network

Traditionally, a transmission facility designed to interconnect lowspeed distribution channels or clusters of dispersed user devices. It is currently defined as a high-speed line or series of connections that form the major pathway within a given network.

backdrive

To use an external test driver to electrically force a logic device's output to a specified state that is independent of its input state.

back face

The machined surface on the side of a through-bolted flange, opposite the gasket face, that is provided for nut seating. [ANSI/ISA-75.05.01 2000]

backflush

The injection of a fluid against the process flow manner in order to remove line fluid or obstructions. [ISA-67.02.01 1999; S67.10]

background

1. In a computer's graphic display, the field that information is displayed upon for contrast. [ISA-5.5 1985] [Meas] 2. In radiation counting, a low-level signal that is caused by radiation from sources other than the source of radiation being measured. [Comp] 3. A computer environment in which low-priority programs are executed.

background discrimination

The capacity of a measuring instrument or detection circuit to distinguish an input signal from electronic noise or...