Lights & lighting

Lights & lighting

Any device used for illumination, either for practical use or deliberate aesthetic effect.

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Lights & lighting > Lighting products

enclosed fixtures

Lights & lighting; Lighting products

(See OPEN FIXTURE RATED)

energy policy act (EPACT)

Lights & lighting; Lighting products

Comprehensive energy legislation passed by the U. S. Congress in 1992. The lighting portion includes lamp labeling and minimum energy efficacy (lumens/watt) requirements for many ...

energy policy act (EPACT) indicator

Lights & lighting; Lighting products

Means this lamp is Federally regulated for Energy Efficiency (See ENERGY POLICY ACT).

phosphor

Lights & lighting; Lighting products

An inorganic chemical compound processed into a powder and deposited on the inner glass surface of fluorescent tubes and some mercury and metal-halide lamp bulbs. Phosphors are ...

photometry

Lights & lighting; Lighting products

The measurement of light and related quantities.

photopic

Lights & lighting; Lighting products

Vision for which the cones in the eye are responsible; typically at high brightness and in the foveal or central region (See SCOTOPIC, FOVEA, FOVEAL VISON).