lumens
Bulb brightness measure
Lumens measure the total amount of visible light emitted by a source.
Where watts measure energy consumption, lumens measure brightness output: This bulb produces 800 lumens.
The shift from incandescent to LED lighting made lumens the standard metric for comparing brightness, since LEDs use far fewer watts for equivalent light output.
Strength or force level
- brillianceExceptional intelligence or luster
- radianceGlowing luminous quality
- glowSteady, soft light
- outputWhat something generates
brightness · dazzle · glare · dimness · candlelight · incandescence · fluorescence · phosphorescence
Luminous intensity unit
- luxSI illuminance unit
- foot-candleLuminance measurement unit
- photometryMeasuring light intensity
- scotopicRelating to dim-light vision
irradiance · photodiode · calibration · nit · wattage · candlepower
Underground plant storage
- LEDsSemiconductor light sources
- flashlightsPortable battery-powered lamps
- headlightsFront vehicle lamps
- projectorsDevices casting images forward
lanterns · floodlights · spotlights · fixtures · fluorescent · incandescent · halogen · lamps
Creating images from light
- cinematographyMotion picture visual craft
- aquariumsGlass containers for fish
- dimmingDecreasing in brightness
intensity
Strength or force level
- brillianceExceptional intelligence or luster
- radianceGlowing luminous quality
- glowSteady, soft light
output · brightness · dazzle · glare · dimness · candlelight · incandescence · fluorescence · phosphorescence · visibility
candela
Luminous intensity unit
- luxSI illuminance unit
- foot-candleLuminance measurement unit
- photometryMeasuring light intensity
scotopic · irradiance · photodiode · calibration · nit · wattage · candlepower
bulbs
Underground plant storage
- LEDsSemiconductor light sources
- flashlightsPortable battery-powered lamps
- headlightsFront vehicle lamps
projectors · lanterns · floodlights · spotlights · fixtures · fluorescent · incandescent · halogen · lamps · torches
photography
Creating images from light
- cinematographyMotion picture visual craft
- aquariumsGlass containers for fish
- dimmingDecreasing in brightness
- lightsunlight, daylight, shine, rays, moonlight
- measurementscales, gauging, balance, metering, gram
- physics termsacoustics, optics, thermodynamics, waves, frequency
- lighting termsdimming, LED bulb, floodlight, brightening, incandescent bulb
- unitsunit, angstrom, yard, meter, base units
- Light Sciencelight source, light sources, light intensity, light spectrum, wavelength