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Why is xenon purple?

Updated: 9/17/2023
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11y ago

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Xenon is a colourless gas.

If you are referring to the light given out by HID Xenon bulbs, this is created by the electric arc generated inside the bulb. The colour of the arc can be altered by adjusting the mixture of chemicals in the gas. These are primarily various metal ions.

Xenon gas is used because it is not only colourless, but is inert, meaning the high temperatures in the bulb will not cause it to react to any part of it.

Xenon HID bulbs come in a range of colours from pure white through to purple. For use in cars, white or off-white is generally preferred, as these give the greatest light output.

See: Xenon HID Bulb information as in the link below.

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11y ago
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Q: Why is xenon purple?
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