krypton
Unreactive lamp filler
Krypton is a chemical element, one of the noble gases—colorless, odorless, and largely unreactive.
It occurs in trace amounts in Earth's atmosphere and has limited industrial applications, mainly in specialized lighting.
The name comes from a Greek word meaning hidden, reflecting how difficult it was to isolate.
Superman's home planet Krypton borrowed the name.
Unreactive element eighteen
- heliumLightest noble gas
- neonInert illuminating element
- xenonElement fifty-four, noble gas
- radonRadioactive inert gas
inert gases · nonreactive · monatomic · atmospheric · rare · colorless
Unreactive periodic table element
- periodic tableSystematic display of elements
- colorlessDevoid of pigmentation
- odorlessHaving no smell
- monatomicSingle-atom composition
inert · nonreactive · stable · spectral lines · 1898 · discovery
Kryptonian birth name
- SmallvilleAny unremarkable small town
- MetropolisHero's fictional American city
- Lois LaneNewspaper reporter, Metropolis
- Daily PlanetFictional metropolitan broadsheet
Clark Kent · Lex Luthor · Jor-El · Phantom Zone · General Zod · Supergirl · kryptonite · red sun
Emitting light when energized
- discharge tubesSealed vessels conducting through gas
- luminescenceHeatless light emission
- phosphorLight-emitting coating substance
- glowSteady, soft light
illumination · energy-efficient · high-speed photography · white light
Concentrated light device
- semiconductorPartial electrical conductor
- plasmaElectrified matter state
- insulationThermal transfer prevention
- cryogenicsUltralow temperature science
research · scientific instruments · imaging · high-tech · manufacturing · gas cylinder · purification
argon
Unreactive element eighteen
radon · inert gases · nonreactive · monatomic · atmospheric · rare · colorless
noble gas
Unreactive periodic table element
- periodic tableSystematic display of elements
- colorlessDevoid of pigmentation
- odorlessHaving no smell
monatomic · inert · nonreactive · stable · spectral lines · 1898 · discovery
Kal-El
Kryptonian birth name
- SmallvilleAny unremarkable small town
- MetropolisHero's fictional American city
- Lois LaneNewspaper reporter, Metropolis
Clark Kent · Daily Planet · Lex Luthor · Jor-El · Phantom Zone · General Zod · Supergirl · kryptonite · red sun · Fortress of Solitude
fluorescent
Emitting light when energized
- discharge tubesSealed vessels conducting through gas
- luminescenceHeatless light emission
- phosphorLight-emitting coating substance
glow · illumination · energy-efficient · high-speed photography · white light
laser
Concentrated light device
- semiconductorPartial electrical conductor
- plasmaElectrified matter state
- insulationThermal transfer prevention
cryogenics · research · scientific instruments · imaging · high-tech · manufacturing · gas cylinder · purification
- atmosphereair, humidity, atmosphere, temperature, oxygen
- gasesgas, air, oxygen, helium, nitrogen
- periodic tableperiodic table, elements, hydrogen, helium, carbon
- elementsoxygen, hydrogen, carbon, helium, nitrogen
- chemistry termscarbon, nitrogen, oxygen, sulfur, phosphorus
- main group elementshydrogen, helium, lithium, beryllium, boron