luminescence
Light without heat
Luminescence is light produced without significant heat—the glow of fireflies, deep-sea creatures, or phosphorescent paint.
Unlike incandescence, where objects glow because they're hot, luminescence comes from chemical reactions, electrical stimulation, or absorbed radiation being re-emitted.
The word covers specific types: bioluminescence (living organisms), fluorescence (immediate re-emission), phosphorescence (delayed glow).
The luminescence of the jellyfish lit up the dark water.
Glowing luminous quality
- shimmerTremulous, wavering light
- gleamFaint reflected light
- glimmerFaint, wavering light
- sparkleEmit flashing light
twinkle · sheen · ethereal · halo · aura · incandescence · candlelight · moonlight
Bioluminescent nocturnal beetle
- jellyfishDrifting marine stinger
- glow-wormBioluminescent beetle larva
- anglerfishBioluminescent deep-sea predator
- planktonDrifting marine microlife
deep-sea · foxfire · krill · coral · comb-jelly · squid · lanternfish · aequorin
Inert illuminating element
- LEDSemiconductor that glows
- blacklightUltraviolet radiation source
- raveEnthusiastic praise or nightlong dance
- highlighterLuminous ink pen
aurora · installations · displays · signs · theatrical · effects · novelty
Lingering light or feeling
- glow-in-the-darkLuminous without power source
- stickersAdhesive-backed paper images
- paintColored coating substance
- pigmentColor-imparting material
nightlight · radium · long-lasting · darkness · toys · stars · ceiling · charging
Electromagnetic radiation unit
- wavelengthSpatial repetition interval
- emissionDischarged substance or act
- excitationStimulation of response
- spectrumContinuous range of values
radiance
Glowing luminous quality
sparkle · twinkle · sheen · ethereal · halo · aura · incandescence · candlelight · moonlight · starlight
firefly
Bioluminescent nocturnal beetle
- jellyfishDrifting marine stinger
- glow-wormBioluminescent beetle larva
- anglerfishBioluminescent deep-sea predator
plankton · deep-sea · foxfire · krill · coral · comb-jelly · squid · lanternfish · aequorin
neon
Inert illuminating element
- LEDSemiconductor that glows
- blacklightUltraviolet radiation source
- raveEnthusiastic praise or nightlong dance
highlighter · aurora · installations · displays · signs · theatrical · effects · novelty
afterglow
Lingering light or feeling
- glow-in-the-darkLuminous without power source
- stickersAdhesive-backed paper images
- paintColored coating substance
pigment · nightlight · radium · long-lasting · darkness · toys · stars · ceiling · charging
photon
Electromagnetic radiation unit
- wavelengthSpatial repetition interval
- emissionDischarged substance or act
- excitationStimulation of response
luminescencedarkness
Total absence of light
dark · blackness · lightlessness · shadow · gloom
luminescenceincandescence
Light from heated objects
thermal radiation · candlelight · firelight · ember glow · white-hot
- luminescent paintLight-emitting surface coating
luminescent, bioluminescent, bioluminescence, chemiluminescence, electroluminescence, chemiluminescent