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B&H glossary for Professional Video,
   

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Glossary for Lighting Terms
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T

Three-Point Lighting
The standard lighting system of key, fill and back lighting from which all other lighting set-ups evolve.

Transformer (Xformer)
An item that converts voltage from one value to another. There are two basic types, electronic and magnetic, and both come in many configurations.

Translucent
A term used to describe something that transmits light, but scatters light rays such that a clear image cannot be seen through the material.

Transparent
A term used to describe something that transmits light without scattering light rays, such that a clear image can be seen through the material.

Tungsten
An element used to manufacture lamp filaments. It has a melting point of approximately 3400°.

Tungsten-Halogen
A term used to describe a family of lamps that use the halogen gas iodine, an envelope made of quartz, and a filament made of tungsten, in their manufacture.

Tweenie
A 300-650 watt fresnel spotlight.

Twofer
A special power cord that has one male connector electrically connected to two female connectors via two separate cables or sets of sleeved wires.

Two-Pin Base
A lamp base with two narrow, parallel pin shaped contacts protruding from the bottom

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