Contributors in Lighting
Lighting
efficacy
Construction; Lighting
A metric used to compare light output to energy consumption. Efficacy is measured in lumens per watt. Efficacy is similar to efficiency, but is expressed in dissimilar units. For example, if a ...
paracube
Construction; Lighting
A metallic coated plastic louver made up of small squares. Often used to replace the lens in an installed troffer to enhance its appearance. The paracube is visually comfortable, but the luminaire ...
electroluminescent
Construction; Lighting
A light source technology used in exit signs that provides uniform brightness, long lamp life (approximately eight years), while consuming very little energy (less than one watt per lamp).
fluorescent lamp
Construction; Lighting
A light source consisting of a tube filled with argon, along with krypton or other inert gas. When electrical current is applied, the resulting arc emits ultraviolet radiation that excites the ...
photocell
Construction; Lighting
A light sensing device used to control luminaires and dimmers in response to detected light levels.
high output (HO)
Construction; Lighting
A lamp or ballast designed to operate at higher currents (800 mA) and produce more light.