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Lights & lighting
Any device used for illumination, either for practical use or deliberate aesthetic effect.
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Lights & lighting > Lighting products 
footlambert
Lights & lighting; Lighting products
An obsolete term referring to a luminance of 1/? candelas per square foot.
four-pin compact fluorescent lamps
Lights & lighting; Lighting products
A "plug-in" compact fluorescent lamp with 4 pins in the base to make electrical contact with the ballast.
fovea, foveal vision
Lights & lighting; Lighting products
A small region of the retina corresponding to what an observer is looking straight at. This region is populated almost entirely with cones, while the peripheral region has ...
frequency
Lights & lighting; Lighting products
Rate of alternation in an AC current. Expressed in cycles per second or Hertz (Hz).
full spectrum lighting
Lights & lighting; Lighting products
A marketing term, typically associated with light sources that are similar to some forms of natural daylight (5000K and above, 90+ CRI), but sometimes more broadly used for lamps ...
Sub-categories
- Indoor lighting (47)
- Lighting accessories (13)
- Lighting bulbs & tubes (94)
- Lighting products (8932)
- Outdoor lighting (67)
- Portable lighting (9)