Glossary D

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

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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.

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Differential gear is defined as a bevel gear that permits rotation of two shafts at different speeds.

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Demand is a term to denote the amount of goods people are willing and able to buy at a given price; often coupled with supply.

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Dyes are characterized as a synthetic or natural organic chemicals that are soluble in most common solvents. Characterized by good transparency, high tinctorial strength, and low specific gravity.

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Diethylamine refers to a fabric dye that is harmful to aquatic organisms.

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Die-cutting refers to the use of a sharp, formed piece of metal to cut out specific shapes in a piece of paper.

Drawing is a term used for a variety of forming operations, such as deep drawing a sheet metal blank ; redrawing a tubular part; and drawing rod, wire, and tube.

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