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Lighting products

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Lighting products

Watts

Lights & lighting; Lighting products

A unit of electrical power. Lamps are rated in watts to indicate the rate at which they consume energy. (See KILOWATT HOUR).

Wavelength

Lights & lighting; Lighting products

The distance between two neighbouring crests of a travelling wave. The wavelength of light is between 400 and 700 nanometers.

Work plane

Lights & lighting; Lighting products

Plane at which work is done and at which illumination is specified and measured; unless otherwise indicated, it is assumed to be a horizontal plane 30 inches above the floor (table-top height) having ...

Working distance (typical)

Lights & lighting; Lighting products

For Multi-Mirror® and other reflector Quartzline® lamps and MARC™ Projection lamps, the Working Distance shown is the distance from the front surface of the reflector rim to the film plane, in the ...

Alternating current (AC)

Lights & lighting; Lighting products

Current which flows in one direction and then the other, alternately.

Accent lighting

Lights & lighting; Lighting products

Directional lighting to emphasise a particular object or draw attention to a display item.

Adaptation

Lights & lighting; Lighting products

The process by which the human eye adjusts to a change in light level.

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