light emission
Radiance from source
Light emission is the release of light from a source—whether a glowing filament, a chemical reaction, or an excited atom returning to its ground state.
The term appears in technical contexts describing how light is produced: The light emission from LEDs is more efficient than from incandescent bulbs.
Emission contrasts with reflection or transmission, emphasizing that the source generates rather than redirects light.
- luminescenceHeatless light emission
- LEDSemiconductor that glows
- neon signIlluminated gas-tube lettering
- sunlightRadiance from our star
- illuminationProvision of light
northern lights · glow · glow stick · phosphorescence · laser · spectrometer · incandescence · aurora · anglerfish · photometer · scintillation · firefly · shine · wavelength · candle flame · filament · brightness · glimmer