13 Terms
Home > Industry/Domain > Lights & lighting > Lighting products
Lighting products
Industry: Lights & lighting
Add a new termContributors in Lighting products
Lighting products
Colour temperature (correlated colour temperature - CCT)
Lights & lighting; Lighting products
A number indicating the degree of "yellowness" or "blueness" of a white light source. Measured in kelvins, CCT represents the temperature an incandescent object (like a filament) must reach to mimic ...
Compact fluorescent lamp (CFL)
Lights & lighting; Lighting products
The general term applied to fluorescent lamps that are single-ended and that have smaller diameter tubes that are bent to form a compact shape. Some CFLs have integral ballasts and medium or ...
Cool white
Lights & lighting; Lighting products
A term loosely used to denote a colour temperature of around 4100 K. The Cool White (CW) designation is used specifically for T12 and other fluorescent lamps using halophosphors and having a CRI of ...
Core
Lights & lighting; Lighting products
Component of electromagnetic ballast that is surrounded by the coil. Core is comprised of steel laminations or solid ferrite material.
Cosine-corrected
Lights & lighting; Lighting products
An illuminance metre that measures the light level correctly irrespective of the angle the light is coming from. (See ILLUMINANCE METER)
Cost of light
Lights & lighting; Lighting products
Usually refers to the cost of operating and maintaining a lighting system on an ongoing basis. The 88-8-4 rule states that (typically) 88% is the cost of electricity, 8% is labour and only 4% is the ...
Crest factor (lamp current crest factor)
Lights & lighting; Lighting products
Ratio of peak to RMS for any AC waveform. Crest factor can refer to voltage crest factor or current crest factor.
