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Lighting products
Industry: Lights & lighting
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Lighting products
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 color 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 meter 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 labor 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.
