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Lights & lighting
Any device used for illumination, either for practical use or deliberate aesthetic effect.
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Lights & lighting > 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 neighboring crests of a traveling 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 ...
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 ...
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 emphasize 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.
Sub-categories
- Indoor lighting (47)
- Lighting accessories (13)
- Lighting bulbs & tubes (94)
- Lighting products (8932)
- Outdoor lighting (67)
- Portable lighting (9)