High
Intensity Discharge Headlight (HID)
A
High Intensity Discharge Headlight (HID), also known as a
xenon light, is a headlight that uses a quartz glass bulb
containing xenon gas and halide salts to create a light about
three times as bright as a halogen light.
Between the two electrodes of a high-intensity discharge (HID)
light, a high voltage creates an arc which turns the gas in
the bulb into a bright plasma (ionized gas) that shines with
an intense bluish light. Standard on some vehicles and optional
on others, HID headlights provide a brighter, more effective
beam than traditional halogens, though they are much more
expensive. On a few vehicles, the HID lights can move laterally
in concert with the steering wheel to illuminate the road
ahead even while cornering.
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