28 Terms
Contributors in Lighting
Lighting
photometric report
Construction; Lighting
A photometric report is a set of printed data describing the light distribution, efficiency, and zonal lumen output of a luminaire. This report is generated from laboratory testing.
low-pressure sodium
Construction; Lighting
A low-pressure discharge lamp in which light is produced by radiation from sodium vapor. Considered a monochromatic light source (most colors are rendered as gray).
MR-16
Construction; Lighting
A low-voltage quartz reflector lamp, only 2" in diameter. Typically the lamp and reflector are one unit, which directs a sharp, precise beam of light.
spacing criterion
Construction; Lighting
A maximum distance that interior fixtures may be spaced that ensures uniform illumination on the work plane. The luminaire height above the work plane multiplied by the spacing criterion equals the ...
candlepower
Construction; Lighting
A measure of luminous intensity of a light source in a specific direction, measured in candelas.
PAR 36
Construction; Lighting
A PAR lamp that is 36 one-eighths of an inch in diameter with a parabolic shaped reflector.
