Which lighting is known to have a yellow hue?

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Multiple Choice

Which lighting is known to have a yellow hue?

Explanation:
Sodium vapor lamps are known for a distinct yellow-orange glow because the gas discharge emits light primarily at sodium’s characteristic wavelengths around 589 nanometers. That strong emission creates the unmistakable yellow hue, which is especially prominent in high‑pressure sodium lamps used for street and outdoor lighting. Other common lamp types produce white or bluish light (LEDs can vary, quartz/halogen tends toward warm white, and mercury vapor is bluish-green), so they don’t have that single yellow look.

Sodium vapor lamps are known for a distinct yellow-orange glow because the gas discharge emits light primarily at sodium’s characteristic wavelengths around 589 nanometers. That strong emission creates the unmistakable yellow hue, which is especially prominent in high‑pressure sodium lamps used for street and outdoor lighting. Other common lamp types produce white or bluish light (LEDs can vary, quartz/halogen tends toward warm white, and mercury vapor is bluish-green), so they don’t have that single yellow look.

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