sodium vapor
Yellow highway illumination
Sodium vapor refers to sodium in its gaseous state, most commonly encountered in sodium vapor lamps—streetlights and industrial lighting that produce a distinctive yellow-orange glow by passing electricity through vaporized sodium.
The monochromatic light is energy-efficient but renders colors poorly: Everything looks yellowish under sodium vapor lights.
- atomic emissionRadiation from unstable nuclei
- ionizationCharge acquisition process
- night visibilityCapacity to see in darkness
- urban lightingIllumination in populated areas
- city skylineUrban rooftop profile
industrial area · spectral lines · ecological impact · power grid · light pollution · street lighting · alkali metals · energy conservation · lumens · ballast · low-pressure · retrofitting · maintenance costs · municipal budget · high-pressure · light bulb · public safety · energy efficiency
- discharge tubesfluorescent tube, neon tube, neon lamp, neon light, neon bulb
- luminescenceluminescence, fluorescence, phosphorescence, bioluminescence, chemiluminescence
- light colorcolor temperature, white balance, warm light, cool light, daylight
sodium vapornatural light
Illumination from the sun
sunlight · daylight · broad-spectrum · white light · LED