luminosity
Intrinsic stellar brightness
Luminosity is the quality or state of emitting light—brightness, radiance.
In astronomy, luminosity measures the total energy a star or celestial body radiates per unit of time, distinguishing it from apparent brightness, which depends on distance: The star's luminosity exceeds the sun's by a factor of ten thousand.
Figuratively, luminosity describes intellectual brilliance or clarity: the luminosity of her prose.
Degree of light emitted
- brillianceExceptional intelligence or luster
- glowSteady, soft light
- radianceGlowing luminous quality
- shineEmit or reflect light
gleam · shimmer · sparkle · glimmer · twinkle · sheen · luster · dazzle
Luminous intensity unit
- luxSI illuminance unit
- foot-candleLuminance measurement unit
- nitParasite egg or quibble
- fluxContinuous change or flow
irradiance · photometry · magnitude · intensity · brightness · illuminance · radiant · output
Glowing luminous quality
- glowSteady, soft light
- complexionSkin tone, appearance
- dewyCovered in condensation
- healthyIn good physical condition
youthful · translucence · warmth · tone · vitality · sheen · clarity · brightening
Heatless delayed light emission
- fluorescenceLight emitted after absorption
- iridescenceColor shift from interference
- opalescenceMilky, shifting luster
- afterglowLingering light or feeling
aurora · halo · corona · moonlight · starlight · candlelight · firelight · sunlight
Electric light fixture
- bulbRounded storage organ
- LEDSemiconductor that glows
- chandelierDecorative suspended light fixture
- spotlightConcentrated illumination source
floodlight · backlight · ambient · fixture · dimmer · wattage · halogen · incandescent
brightness
Degree of light emitted
- brillianceExceptional intelligence or luster
- glowSteady, soft light
- radianceGlowing luminous quality
shine · gleam · shimmer · sparkle · glimmer · twinkle · sheen · luster · dazzle · glint
candela
Luminous intensity unit
- luxSI illuminance unit
- foot-candleLuminance measurement unit
- nitParasite egg or quibble
flux · irradiance · photometry · magnitude · intensity · brightness · illuminance · radiant · output · wattage
radiance
Glowing luminous quality
- glowSteady, soft light
- complexionSkin tone, appearance
- dewyCovered in condensation
healthy · youthful · translucence · warmth · tone · vitality · sheen · clarity · brightening · evenness
phosphorescence
Heatless delayed light emission
- fluorescenceLight emitted after absorption
- iridescenceColor shift from interference
- opalescenceMilky, shifting luster
afterglow · aurora · halo · corona · moonlight · starlight · candlelight · firelight · sunlight · daylight
lamp
Electric light fixture
- bulbRounded storage organ
- LEDSemiconductor that glows
- chandelierDecorative suspended light fixture
spotlight · floodlight · backlight · ambient · fixture · dimmer · wattage · halogen · incandescent · fluorescent
star
Luminous astronomical object
- supergiantHuge luminous evolved star
- magnitudeSize or scale
- absoluteTotal, without qualification
apparent · stellar · supernova · quasar · nebula · galaxy · redshift · variable · dwarf · giant
- lightsunlight, daylight, shine, rays, moonlight
- measurementsheight, stature, meters, depth, pound
- spacespace, sun, moon, stars, star
- sunsol, solar, sunlight, sunspots, sunshine
- aestheticsaesthetics, aesthetic, beauty, beautiful, ugly
- astronomy termseclipse, solar eclipse, lunar eclipse, star, meteor shower