Related terms:
cri
cfls
lm
lumens
leds
phosphor
light bulb
incandescent bulbs
luminous efficiency
fluorescent bulbs
fluorescent lamp
incandescent lamps
color rendering index
incandescent light
compact fluorescent lamp
incandescent
ballast
filament
lamp
Wikipedia sources:
Luminous efficacy
Incandescent light bulb
Light-emitting diode
Compact fluorescent lamp
Fluorescent lamp
Context for words:
luminous
efficacy
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