HPS street lights rely on the sodium vapor to emit enough light, but at the beginning, the temperature is not enough for the solid sodium to vaporize. En cambio, when the HPS street lights are just turned on, the mercury and xenon will emit light first. And their light is white. Más tarde, when the temperature is high enough, sodium vapor starts to emit yellow light.
Más lectura: Farolas LED VS farolas HPS: ¿Qué es mejor en 2023?



