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Lighting products
Industry: Lights & lighting
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Lighting products
instant start lamp
Lights & lighting; Lighting products
A fluorescent lamp, usually with a single pin at each end, approved to operate on instant start ballasts. The lamp is ignited by a high voltage without any filament heating.
integral
Lights & lighting; Lighting products
A popular term for a compact fluorescent lamp which includes a built-in ballast (See CFL).
inverse square law
Lights & lighting; Lighting products
Formula stating that if you double the distance from the light source, the light level goes down by a factor of 4, if you triple the distance, it goes down by a factor of 9, and so on.
isocandela plot
Lights & lighting; Lighting products
A plot with lines connecting points of equal luminous intensity around a source.
isolux plot (or isofootcandle plot)
Lights & lighting; Lighting products
A line plotted to show points of equal illuminance (lux or footcandles) on a surface illuminated by a source or sources.
kelvin
Lights & lighting; Lighting products
A unit of temperature starting from absolute zero, parallel to the Celsius (or Centigrade) scale. 0C is 273K.
kilowatt (kW)
Lights & lighting; Lighting products
The measure of electrical power equal to 1000 watts.
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