Glossary D

Digital image scanner is a device for scanning the images contained on pages of a document and transforming the scanned image into digital electronic signals corresponding to the physical state at each part of the search area, that is, into image documents.

A Dicing machine also called dicing attachment or cubing machine is described as a bench-mounted hand- or motor-driven two-operation machine that first forces food through a grid network of knives in a square pattern and then slices the food the same length as the side of the square.

Distillation refers to the first step in the refining process. During distillation, crude oil is heated in the base of a distillation tower.

Device can be taken to mean:

1. An electrical device designed to carry power;

Digital command control has something to do with the method of controlling multiple trains and accessories using digital communications packets to send commands.

Digital audio tape (DAT) has something to do with the tape which stores data digitally rather than in traditional analogue format.

Diffraction is identified as the phenomenon of light that occurs when light passing through a narrow aperture bends when it passes around an edge.

Differential is defined as a device - usually made of gears - that divides the torque between a vehicle's driving wheels and permits the wheels to turn at different speeds.